How to prepare a disk on an EFI based PC for Ubuntu?
up vote
15
down vote
favorite
My computer has UEFI based BIOS and I want to start over from scratch.
The PC came with Windows installed - I later installed Ubuntu alongside.
I want to completely re-build my whole disk and install only Ubuntu on it.
So it is not about how to install Ubuntu, it is about how to prepare a disk.
What is the most professional way and which tasks will I have to perform?
partitioning gparted disk partitions gpt
asked Mar 7 '16 at 15:00
cl-netbox
25.6k572113
|
show 1 more comment
up vote
15
down vote
favorite
My computer has UEFI based BIOS and I want to start over from scratch.
The PC came with Windows installed - I later installed Ubuntu alongside.
I want to completely re-build my whole disk and install only Ubuntu on it.
So it is not about how to install Ubuntu, it is about how to prepare a disk.
What is the most professional way and which tasks will I have to perform?
partitioning gparted disk partitions gpt
asked Mar 7 '16 at 15:00
cl-netbox
25.6k572113
I assume you have gone through askubuntu.com/q/221835/158442? I'd say the simplest way is: enable legacy (BIOS) booting in UEFI, then install Ubuntu choosing the use entire disk option.
– muru
Mar 7 '16 at 15:06
You should have added an answer to that Q then. This has already been asked: askubuntu.com/questions/420272/…
– muru
Mar 7 '16 at 15:12
5
Muru, if you want to boot in EFI/UEFI mode, enabling the Compatibility Support Module (CSM; aka "legacy boot support" or a similar phrase) is something you should almost certainly NOT do. See here for details on why this is the case. Two or three times a week, I answer questions from people who've bungled their installations because they've activated their CSMs.
– Rod Smith
Mar 7 '16 at 17:24
@RodSmith see the original question. If I were wiping Windows and starting from scratch and looking for the simplest way, I wouldn't bother with UEFI at all. In fact, using CSM is exactly what I do when I don't want to bother about anything else. No need for this special partitioning and ESP and whatnot.
– muru
Mar 7 '16 at 21:02
2
Muru, modern computers use EFI (or UEFI, which is EFI 2.x), so you can't avoid it. At best, you add complexity by enabling the CSM. Granted, the native EFI method of booting is different and unfamiliar to long-time BIOS users, but it's no harder once you understand it. If you understand neither BIOS nor EFI, you might as well learn EFI, since BIOS is a dead-end technology.
– Rod Smith
Mar 8 '16 at 14:13
|
show 1 more comment
up vote
15
down vote
favorite
up vote
15
down vote
favorite
My computer has UEFI based BIOS and I want to start over from scratch.
The PC came with Windows installed - I later installed Ubuntu alongside.
I want to completely re-build my whole disk and install only Ubuntu on it.
So it is not about how to install Ubuntu, it is about how to prepare a disk.
What is the most professional way and which tasks will I have to perform?
partitioning gparted disk partitions gpt
asked Mar 7 '16 at 15:00
cl-netbox
25.6k572113
My computer has UEFI based BIOS and I want to start over from scratch.
The PC came with Windows installed - I later installed Ubuntu alongside.
I want to completely re-build my whole disk and install only Ubuntu on it.
So it is not about how to install Ubuntu, it is about how to prepare a disk.
What is the most professional way and which tasks will I have to perform?
partitioning gparted disk partitions gpt
partitioning gparted disk partitions gpt
asked Mar 7 '16 at 15:00
cl-netbox
25.6k572113
asked Mar 7 '16 at 15:00
cl-netbox
25.6k572113
edited Mar 9 '16 at 16:04
asked Mar 7 '16 at 15:00
cl-netbox
25.6k572113
asked Mar 7 '16 at 15:00
cl-netbox
25.6k572113
asked Mar 7 '16 at 15:00
cl-netbox
25.6k572113
25.6k572113
I assume you have gone through askubuntu.com/q/221835/158442? I'd say the simplest way is: enable legacy (BIOS) booting in UEFI, then install Ubuntu choosing the use entire disk option.
– muru
Mar 7 '16 at 15:06
You should have added an answer to that Q then. This has already been asked: askubuntu.com/questions/420272/…
– muru
Mar 7 '16 at 15:12
5
Muru, if you want to boot in EFI/UEFI mode, enabling the Compatibility Support Module (CSM; aka "legacy boot support" or a similar phrase) is something you should almost certainly NOT do. See here for details on why this is the case. Two or three times a week, I answer questions from people who've bungled their installations because they've activated their CSMs.
– Rod Smith
Mar 7 '16 at 17:24
@RodSmith see the original question. If I were wiping Windows and starting from scratch and looking for the simplest way, I wouldn't bother with UEFI at all. In fact, using CSM is exactly what I do when I don't want to bother about anything else. No need for this special partitioning and ESP and whatnot.
– muru
Mar 7 '16 at 21:02
2
Muru, modern computers use EFI (or UEFI, which is EFI 2.x), so you can't avoid it. At best, you add complexity by enabling the CSM. Granted, the native EFI method of booting is different and unfamiliar to long-time BIOS users, but it's no harder once you understand it. If you understand neither BIOS nor EFI, you might as well learn EFI, since BIOS is a dead-end technology.
– Rod Smith
Mar 8 '16 at 14:13
|
show 1 more comment
I assume you have gone through askubuntu.com/q/221835/158442? I'd say the simplest way is: enable legacy (BIOS) booting in UEFI, then install Ubuntu choosing the use entire disk option.
– muru
Mar 7 '16 at 15:06
You should have added an answer to that Q then. This has already been asked: askubuntu.com/questions/420272/…
– muru
Mar 7 '16 at 15:12
5
Muru, if you want to boot in EFI/UEFI mode, enabling the Compatibility Support Module (CSM; aka "legacy boot support" or a similar phrase) is something you should almost certainly NOT do. See here for details on why this is the case. Two or three times a week, I answer questions from people who've bungled their installations because they've activated their CSMs.
– Rod Smith
Mar 7 '16 at 17:24
@RodSmith see the original question. If I were wiping Windows and starting from scratch and looking for the simplest way, I wouldn't bother with UEFI at all. In fact, using CSM is exactly what I do when I don't want to bother about anything else. No need for this special partitioning and ESP and whatnot.
– muru
Mar 7 '16 at 21:02
2
Muru, modern computers use EFI (or UEFI, which is EFI 2.x), so you can't avoid it. At best, you add complexity by enabling the CSM. Granted, the native EFI method of booting is different and unfamiliar to long-time BIOS users, but it's no harder once you understand it. If you understand neither BIOS nor EFI, you might as well learn EFI, since BIOS is a dead-end technology.
– Rod Smith
Mar 8 '16 at 14:13
I assume you have gone through askubuntu.com/q/221835/158442? I'd say the simplest way is: enable legacy (BIOS) booting in UEFI, then install Ubuntu choosing the use entire disk option.
– muru
Mar 7 '16 at 15:06
I assume you have gone through askubuntu.com/q/221835/158442? I'd say the simplest way is: enable legacy (BIOS) booting in UEFI, then install Ubuntu choosing the use entire disk option.
– muru
Mar 7 '16 at 15:06
You should have added an answer to that Q then. This has already been asked: askubuntu.com/questions/420272/…
– muru
Mar 7 '16 at 15:12
You should have added an answer to that Q then. This has already been asked: askubuntu.com/questions/420272/…
– muru
Mar 7 '16 at 15:12
5
5
Muru, if you want to boot in EFI/UEFI mode, enabling the Compatibility Support Module (CSM; aka "legacy boot support" or a similar phrase) is something you should almost certainly NOT do. See here for details on why this is the case. Two or three times a week, I answer questions from people who've bungled their installations because they've activated their CSMs.
– Rod Smith
Mar 7 '16 at 17:24
Muru, if you want to boot in EFI/UEFI mode, enabling the Compatibility Support Module (CSM; aka "legacy boot support" or a similar phrase) is something you should almost certainly NOT do. See here for details on why this is the case. Two or three times a week, I answer questions from people who've bungled their installations because they've activated their CSMs.
– Rod Smith
Mar 7 '16 at 17:24
@RodSmith see the original question. If I were wiping Windows and starting from scratch and looking for the simplest way, I wouldn't bother with UEFI at all. In fact, using CSM is exactly what I do when I don't want to bother about anything else. No need for this special partitioning and ESP and whatnot.
– muru
Mar 7 '16 at 21:02
@RodSmith see the original question. If I were wiping Windows and starting from scratch and looking for the simplest way, I wouldn't bother with UEFI at all. In fact, using CSM is exactly what I do when I don't want to bother about anything else. No need for this special partitioning and ESP and whatnot.
– muru
Mar 7 '16 at 21:02
2
2
Muru, modern computers use EFI (or UEFI, which is EFI 2.x), so you can't avoid it. At best, you add complexity by enabling the CSM. Granted, the native EFI method of booting is different and unfamiliar to long-time BIOS users, but it's no harder once you understand it. If you understand neither BIOS nor EFI, you might as well learn EFI, since BIOS is a dead-end technology.
– Rod Smith
Mar 8 '16 at 14:13
Muru, modern computers use EFI (or UEFI, which is EFI 2.x), so you can't avoid it. At best, you add complexity by enabling the CSM. Granted, the native EFI method of booting is different and unfamiliar to long-time BIOS users, but it's no harder once you understand it. If you understand neither BIOS nor EFI, you might as well learn EFI, since BIOS is a dead-end technology.
– Rod Smith
Mar 8 '16 at 14:13
|
show 1 more comment
2 Answers
2
active
oldest
votes
up vote
10
down vote
accepted
The most convenient and reliable way to prepare a disk is using the GNOME partition editor. GParted is included in the Ubuntu installation media, but in some cases it is better to use the original. When you boot from the Ubuntu install media and you already have a swap partition,
the partition is mounted. Partition swapoff and unmount unfortunately does not always work.
Use GParted from the Ubuntu installation media ... in case it does not work you can
download GParted from the project website and create a bootable DVD/USB media.
Boot from GParted Live media, once on the desktop GParted opens automatically.
Choose the disk you want to work on from the application menu on the top right.
Click on Device → Create Partition Table → Select gpt → Click Apply
Click on Partition → Create new Partition:
New size: about 500 MB - File system: fat32
Click on Partition → Create new Partition:
New size: amount of RAM - File system: linux-swap
Click on Partition → Create new Partition:
New size: minimum 20 GB - File system: ext4
Optionally create more partitions:
Click on Partition → Create new Partition:
New size: arbitrary - File system: arbitrary
These partitions can be used to store the personal data that are separated from the system. Use ext4 when Ubuntu or other Unix/Linux based systems are the only systems that need to access them. When you want to make the data accessible to Windows as well, choose ntfs or fat32.
Click on Apply after checking that everything is correct, wait until GParted completed the tasks.
Right-click the fat32 partition → Manage flags → Select boot and esp.
Now close GParted, shut down the computer, remove the GParted Live media.
Boot from Ubuntu installation media and select Try Ubuntu without installing.
On the desktop click Install Ubuntu and when asked, choose 'Something else'.
Select the ext4 partition you have created with GParted for Ubuntu before.
Select / as mount point and ext4 as file system ... start the installation.
Presentation : How to set up a disk and create new partitions with GParted
Example : Prepare the disk for the installation using an Ubuntu Live media
Additional information concerning swap : Community Help Wiki SwapFAQ
Note:
Doing it this way has one big advantage: You decide yourself about the whole partition layout and can prepare everything for eventual changes being made in the future. The partition sizes are suggestions, users of course shall choose them fitting to their needs. What first looks a bit complicated, is, once you have understood the systematic behind it and done it one time, easy.
answered Mar 7 '16 at 15:08
cl-netbox
25.6k572113
2
To summarise this overly-long answer: UEFI requires a FAT32-formatted partition with thebootflag activated.
– muru
Mar 7 '16 at 16:20
This is way over-complicated. The installer can do it all automatically.
– Andrew Medico
Mar 8 '16 at 3:13
I think the complexity of this answer is spot on, as this whole Grub EFI package bug is a PITA (as it helps to have details). For learning about how these things work, this level of complicated-ness is helpful. However, all that said, this answer might be a bit slim after the formatting steps. I found myself wondering whether I should reformat the ext4 partition when installing the OS (eg, whether to check the box when setting the mount point). If you don't (which is the right answer), the startup disk warns/asks questions about existing file systems, overwriting data.
– nicorellius
Sep 19 at 19:55
add a comment |
up vote
7
down vote
You can do everything from inside the Ubuntu installer. The minimum effort option is to select one of the "Use whole disk" variants, which should already do the right thing.
If you want to customize the partition layout, you can use the partition editor inside the installation tool as well, the only important bit is that you need to keep one FAT partition for the EFI binaries. This can be fairly small, since all that really needs to fit is three kernels (backup and running, and enough space to install updates), but unless space is really tight, 256 to 512 MB is a good value.
Last but not least: Ubuntu can only install an EFI bootloader if the system was booted in EFI mode, because the BIOS compatibility layer does not allow access to the boot menu, so the bootloader cannot be registered.
answered Mar 7 '16 at 23:54
Simon Richter
1,936109
add a comment |
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
10
down vote
accepted
The most convenient and reliable way to prepare a disk is using the GNOME partition editor. GParted is included in the Ubuntu installation media, but in some cases it is better to use the original. When you boot from the Ubuntu install media and you already have a swap partition,
the partition is mounted. Partition swapoff and unmount unfortunately does not always work.
Use GParted from the Ubuntu installation media ... in case it does not work you can
download GParted from the project website and create a bootable DVD/USB media.
Boot from GParted Live media, once on the desktop GParted opens automatically.
Choose the disk you want to work on from the application menu on the top right.
Click on Device → Create Partition Table → Select gpt → Click Apply
Click on Partition → Create new Partition:
New size: about 500 MB - File system: fat32
Click on Partition → Create new Partition:
New size: amount of RAM - File system: linux-swap
Click on Partition → Create new Partition:
New size: minimum 20 GB - File system: ext4
Optionally create more partitions:
Click on Partition → Create new Partition:
New size: arbitrary - File system: arbitrary
These partitions can be used to store the personal data that are separated from the system. Use ext4 when Ubuntu or other Unix/Linux based systems are the only systems that need to access them. When you want to make the data accessible to Windows as well, choose ntfs or fat32.
Click on Apply after checking that everything is correct, wait until GParted completed the tasks.
Right-click the fat32 partition → Manage flags → Select boot and esp.
Now close GParted, shut down the computer, remove the GParted Live media.
Boot from Ubuntu installation media and select Try Ubuntu without installing.
On the desktop click Install Ubuntu and when asked, choose 'Something else'.
Select the ext4 partition you have created with GParted for Ubuntu before.
Select / as mount point and ext4 as file system ... start the installation.
Presentation : How to set up a disk and create new partitions with GParted
Example : Prepare the disk for the installation using an Ubuntu Live media
Additional information concerning swap : Community Help Wiki SwapFAQ
Note:
Doing it this way has one big advantage: You decide yourself about the whole partition layout and can prepare everything for eventual changes being made in the future. The partition sizes are suggestions, users of course shall choose them fitting to their needs. What first looks a bit complicated, is, once you have understood the systematic behind it and done it one time, easy.
answered Mar 7 '16 at 15:08
cl-netbox
25.6k572113
2
To summarise this overly-long answer: UEFI requires a FAT32-formatted partition with thebootflag activated.
– muru
Mar 7 '16 at 16:20
This is way over-complicated. The installer can do it all automatically.
– Andrew Medico
Mar 8 '16 at 3:13
I think the complexity of this answer is spot on, as this whole Grub EFI package bug is a PITA (as it helps to have details). For learning about how these things work, this level of complicated-ness is helpful. However, all that said, this answer might be a bit slim after the formatting steps. I found myself wondering whether I should reformat the ext4 partition when installing the OS (eg, whether to check the box when setting the mount point). If you don't (which is the right answer), the startup disk warns/asks questions about existing file systems, overwriting data.
– nicorellius
Sep 19 at 19:55
add a comment |
up vote
10
down vote
accepted
The most convenient and reliable way to prepare a disk is using the GNOME partition editor. GParted is included in the Ubuntu installation media, but in some cases it is better to use the original. When you boot from the Ubuntu install media and you already have a swap partition,
the partition is mounted. Partition swapoff and unmount unfortunately does not always work.
Use GParted from the Ubuntu installation media ... in case it does not work you can
download GParted from the project website and create a bootable DVD/USB media.
Boot from GParted Live media, once on the desktop GParted opens automatically.
Choose the disk you want to work on from the application menu on the top right.
Click on Device → Create Partition Table → Select gpt → Click Apply
Click on Partition → Create new Partition:
New size: about 500 MB - File system: fat32
Click on Partition → Create new Partition:
New size: amount of RAM - File system: linux-swap
Click on Partition → Create new Partition:
New size: minimum 20 GB - File system: ext4
Optionally create more partitions:
Click on Partition → Create new Partition:
New size: arbitrary - File system: arbitrary
These partitions can be used to store the personal data that are separated from the system. Use ext4 when Ubuntu or other Unix/Linux based systems are the only systems that need to access them. When you want to make the data accessible to Windows as well, choose ntfs or fat32.
Click on Apply after checking that everything is correct, wait until GParted completed the tasks.
Right-click the fat32 partition → Manage flags → Select boot and esp.
Now close GParted, shut down the computer, remove the GParted Live media.
Boot from Ubuntu installation media and select Try Ubuntu without installing.
On the desktop click Install Ubuntu and when asked, choose 'Something else'.
Select the ext4 partition you have created with GParted for Ubuntu before.
Select / as mount point and ext4 as file system ... start the installation.
Presentation : How to set up a disk and create new partitions with GParted
Example : Prepare the disk for the installation using an Ubuntu Live media
Additional information concerning swap : Community Help Wiki SwapFAQ
Note:
Doing it this way has one big advantage: You decide yourself about the whole partition layout and can prepare everything for eventual changes being made in the future. The partition sizes are suggestions, users of course shall choose them fitting to their needs. What first looks a bit complicated, is, once you have understood the systematic behind it and done it one time, easy.
answered Mar 7 '16 at 15:08
cl-netbox
25.6k572113
2
To summarise this overly-long answer: UEFI requires a FAT32-formatted partition with thebootflag activated.
– muru
Mar 7 '16 at 16:20
This is way over-complicated. The installer can do it all automatically.
– Andrew Medico
Mar 8 '16 at 3:13
I think the complexity of this answer is spot on, as this whole Grub EFI package bug is a PITA (as it helps to have details). For learning about how these things work, this level of complicated-ness is helpful. However, all that said, this answer might be a bit slim after the formatting steps. I found myself wondering whether I should reformat the ext4 partition when installing the OS (eg, whether to check the box when setting the mount point). If you don't (which is the right answer), the startup disk warns/asks questions about existing file systems, overwriting data.
– nicorellius
Sep 19 at 19:55
add a comment |
up vote
10
down vote
accepted
up vote
10
down vote
accepted
The most convenient and reliable way to prepare a disk is using the GNOME partition editor. GParted is included in the Ubuntu installation media, but in some cases it is better to use the original. When you boot from the Ubuntu install media and you already have a swap partition,
the partition is mounted. Partition swapoff and unmount unfortunately does not always work.
Use GParted from the Ubuntu installation media ... in case it does not work you can
download GParted from the project website and create a bootable DVD/USB media.
Boot from GParted Live media, once on the desktop GParted opens automatically.
Choose the disk you want to work on from the application menu on the top right.
Click on Device → Create Partition Table → Select gpt → Click Apply
Click on Partition → Create new Partition:
New size: about 500 MB - File system: fat32
Click on Partition → Create new Partition:
New size: amount of RAM - File system: linux-swap
Click on Partition → Create new Partition:
New size: minimum 20 GB - File system: ext4
Optionally create more partitions:
Click on Partition → Create new Partition:
New size: arbitrary - File system: arbitrary
These partitions can be used to store the personal data that are separated from the system. Use ext4 when Ubuntu or other Unix/Linux based systems are the only systems that need to access them. When you want to make the data accessible to Windows as well, choose ntfs or fat32.
Click on Apply after checking that everything is correct, wait until GParted completed the tasks.
Right-click the fat32 partition → Manage flags → Select boot and esp.
Now close GParted, shut down the computer, remove the GParted Live media.
Boot from Ubuntu installation media and select Try Ubuntu without installing.
On the desktop click Install Ubuntu and when asked, choose 'Something else'.
Select the ext4 partition you have created with GParted for Ubuntu before.
Select / as mount point and ext4 as file system ... start the installation.
Presentation : How to set up a disk and create new partitions with GParted
Example : Prepare the disk for the installation using an Ubuntu Live media
Additional information concerning swap : Community Help Wiki SwapFAQ
Note:
Doing it this way has one big advantage: You decide yourself about the whole partition layout and can prepare everything for eventual changes being made in the future. The partition sizes are suggestions, users of course shall choose them fitting to their needs. What first looks a bit complicated, is, once you have understood the systematic behind it and done it one time, easy.
answered Mar 7 '16 at 15:08
cl-netbox
25.6k572113
The most convenient and reliable way to prepare a disk is using the GNOME partition editor. GParted is included in the Ubuntu installation media, but in some cases it is better to use the original. When you boot from the Ubuntu install media and you already have a swap partition,
the partition is mounted. Partition swapoff and unmount unfortunately does not always work.
Use GParted from the Ubuntu installation media ... in case it does not work you can
download GParted from the project website and create a bootable DVD/USB media.
Boot from GParted Live media, once on the desktop GParted opens automatically.
Choose the disk you want to work on from the application menu on the top right.
Click on Device → Create Partition Table → Select gpt → Click Apply
Click on Partition → Create new Partition:
New size: about 500 MB - File system: fat32
Click on Partition → Create new Partition:
New size: amount of RAM - File system: linux-swap
Click on Partition → Create new Partition:
New size: minimum 20 GB - File system: ext4
Optionally create more partitions:
Click on Partition → Create new Partition:
New size: arbitrary - File system: arbitrary
These partitions can be used to store the personal data that are separated from the system. Use ext4 when Ubuntu or other Unix/Linux based systems are the only systems that need to access them. When you want to make the data accessible to Windows as well, choose ntfs or fat32.
Click on Apply after checking that everything is correct, wait until GParted completed the tasks.
Right-click the fat32 partition → Manage flags → Select boot and esp.
Now close GParted, shut down the computer, remove the GParted Live media.
Boot from Ubuntu installation media and select Try Ubuntu without installing.
On the desktop click Install Ubuntu and when asked, choose 'Something else'.
Select the ext4 partition you have created with GParted for Ubuntu before.
Select / as mount point and ext4 as file system ... start the installation.
Presentation : How to set up a disk and create new partitions with GParted
Example : Prepare the disk for the installation using an Ubuntu Live media
Additional information concerning swap : Community Help Wiki SwapFAQ
Note:
Doing it this way has one big advantage: You decide yourself about the whole partition layout and can prepare everything for eventual changes being made in the future. The partition sizes are suggestions, users of course shall choose them fitting to their needs. What first looks a bit complicated, is, once you have understood the systematic behind it and done it one time, easy.
answered Mar 7 '16 at 15:08
cl-netbox
25.6k572113
edited May 26 '16 at 11:49
answered Mar 7 '16 at 15:08
cl-netbox
25.6k572113
answered Mar 7 '16 at 15:08
cl-netbox
25.6k572113
answered Mar 7 '16 at 15:08
cl-netbox
25.6k572113
25.6k572113
2
To summarise this overly-long answer: UEFI requires a FAT32-formatted partition with thebootflag activated.
– muru
Mar 7 '16 at 16:20
This is way over-complicated. The installer can do it all automatically.
– Andrew Medico
Mar 8 '16 at 3:13
I think the complexity of this answer is spot on, as this whole Grub EFI package bug is a PITA (as it helps to have details). For learning about how these things work, this level of complicated-ness is helpful. However, all that said, this answer might be a bit slim after the formatting steps. I found myself wondering whether I should reformat the ext4 partition when installing the OS (eg, whether to check the box when setting the mount point). If you don't (which is the right answer), the startup disk warns/asks questions about existing file systems, overwriting data.
– nicorellius
Sep 19 at 19:55
add a comment |
2
To summarise this overly-long answer: UEFI requires a FAT32-formatted partition with thebootflag activated.
– muru
Mar 7 '16 at 16:20
This is way over-complicated. The installer can do it all automatically.
– Andrew Medico
Mar 8 '16 at 3:13
I think the complexity of this answer is spot on, as this whole Grub EFI package bug is a PITA (as it helps to have details). For learning about how these things work, this level of complicated-ness is helpful. However, all that said, this answer might be a bit slim after the formatting steps. I found myself wondering whether I should reformat the ext4 partition when installing the OS (eg, whether to check the box when setting the mount point). If you don't (which is the right answer), the startup disk warns/asks questions about existing file systems, overwriting data.
– nicorellius
Sep 19 at 19:55
2
2
To summarise this overly-long answer: UEFI requires a FAT32-formatted partition with the
boot flag activated.– muru
Mar 7 '16 at 16:20
To summarise this overly-long answer: UEFI requires a FAT32-formatted partition with the
boot flag activated.– muru
Mar 7 '16 at 16:20
This is way over-complicated. The installer can do it all automatically.
– Andrew Medico
Mar 8 '16 at 3:13
This is way over-complicated. The installer can do it all automatically.
– Andrew Medico
Mar 8 '16 at 3:13
I think the complexity of this answer is spot on, as this whole Grub EFI package bug is a PITA (as it helps to have details). For learning about how these things work, this level of complicated-ness is helpful. However, all that said, this answer might be a bit slim after the formatting steps. I found myself wondering whether I should reformat the ext4 partition when installing the OS (eg, whether to check the box when setting the mount point). If you don't (which is the right answer), the startup disk warns/asks questions about existing file systems, overwriting data.
– nicorellius
Sep 19 at 19:55
I think the complexity of this answer is spot on, as this whole Grub EFI package bug is a PITA (as it helps to have details). For learning about how these things work, this level of complicated-ness is helpful. However, all that said, this answer might be a bit slim after the formatting steps. I found myself wondering whether I should reformat the ext4 partition when installing the OS (eg, whether to check the box when setting the mount point). If you don't (which is the right answer), the startup disk warns/asks questions about existing file systems, overwriting data.
– nicorellius
Sep 19 at 19:55
add a comment |
up vote
7
down vote
You can do everything from inside the Ubuntu installer. The minimum effort option is to select one of the "Use whole disk" variants, which should already do the right thing.
If you want to customize the partition layout, you can use the partition editor inside the installation tool as well, the only important bit is that you need to keep one FAT partition for the EFI binaries. This can be fairly small, since all that really needs to fit is three kernels (backup and running, and enough space to install updates), but unless space is really tight, 256 to 512 MB is a good value.
Last but not least: Ubuntu can only install an EFI bootloader if the system was booted in EFI mode, because the BIOS compatibility layer does not allow access to the boot menu, so the bootloader cannot be registered.
answered Mar 7 '16 at 23:54
Simon Richter
1,936109
add a comment |
up vote
7
down vote
You can do everything from inside the Ubuntu installer. The minimum effort option is to select one of the "Use whole disk" variants, which should already do the right thing.
If you want to customize the partition layout, you can use the partition editor inside the installation tool as well, the only important bit is that you need to keep one FAT partition for the EFI binaries. This can be fairly small, since all that really needs to fit is three kernels (backup and running, and enough space to install updates), but unless space is really tight, 256 to 512 MB is a good value.
Last but not least: Ubuntu can only install an EFI bootloader if the system was booted in EFI mode, because the BIOS compatibility layer does not allow access to the boot menu, so the bootloader cannot be registered.
answered Mar 7 '16 at 23:54
Simon Richter
1,936109
add a comment |
up vote
7
down vote
up vote
7
down vote
You can do everything from inside the Ubuntu installer. The minimum effort option is to select one of the "Use whole disk" variants, which should already do the right thing.
If you want to customize the partition layout, you can use the partition editor inside the installation tool as well, the only important bit is that you need to keep one FAT partition for the EFI binaries. This can be fairly small, since all that really needs to fit is three kernels (backup and running, and enough space to install updates), but unless space is really tight, 256 to 512 MB is a good value.
Last but not least: Ubuntu can only install an EFI bootloader if the system was booted in EFI mode, because the BIOS compatibility layer does not allow access to the boot menu, so the bootloader cannot be registered.
answered Mar 7 '16 at 23:54
Simon Richter
1,936109
You can do everything from inside the Ubuntu installer. The minimum effort option is to select one of the "Use whole disk" variants, which should already do the right thing.
If you want to customize the partition layout, you can use the partition editor inside the installation tool as well, the only important bit is that you need to keep one FAT partition for the EFI binaries. This can be fairly small, since all that really needs to fit is three kernels (backup and running, and enough space to install updates), but unless space is really tight, 256 to 512 MB is a good value.
Last but not least: Ubuntu can only install an EFI bootloader if the system was booted in EFI mode, because the BIOS compatibility layer does not allow access to the boot menu, so the bootloader cannot be registered.
answered Mar 7 '16 at 23:54
Simon Richter
1,936109
answered Mar 7 '16 at 23:54
Simon Richter
1,936109
answered Mar 7 '16 at 23:54
Simon Richter
1,936109
answered Mar 7 '16 at 23:54
Simon Richter
1,936109
1,936109
add a comment |
add a comment |
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I assume you have gone through askubuntu.com/q/221835/158442? I'd say the simplest way is: enable legacy (BIOS) booting in UEFI, then install Ubuntu choosing the use entire disk option.
– muru
Mar 7 '16 at 15:06
You should have added an answer to that Q then. This has already been asked: askubuntu.com/questions/420272/…
– muru
Mar 7 '16 at 15:12
5
Muru, if you want to boot in EFI/UEFI mode, enabling the Compatibility Support Module (CSM; aka "legacy boot support" or a similar phrase) is something you should almost certainly NOT do. See here for details on why this is the case. Two or three times a week, I answer questions from people who've bungled their installations because they've activated their CSMs.
– Rod Smith
Mar 7 '16 at 17:24
@RodSmith see the original question. If I were wiping Windows and starting from scratch and looking for the simplest way, I wouldn't bother with UEFI at all. In fact, using CSM is exactly what I do when I don't want to bother about anything else. No need for this special partitioning and ESP and whatnot.
– muru
Mar 7 '16 at 21:02
2
Muru, modern computers use EFI (or UEFI, which is EFI 2.x), so you can't avoid it. At best, you add complexity by enabling the CSM. Granted, the native EFI method of booting is different and unfamiliar to long-time BIOS users, but it's no harder once you understand it. If you understand neither BIOS nor EFI, you might as well learn EFI, since BIOS is a dead-end technology.
– Rod Smith
Mar 8 '16 at 14:13