update to 18.10 get no root file system











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For several years I've used Ubuntu (/boot) on a relatively small partition (35GB) and (/home) on essentially all the rest. when things get messy I can format the Linux partition and leave my /home partition untouched.
Apparently this time I made some slight change and now I am in real trouble.
Upon Install now I get the notification No root file system. Not root file system defined. Please correct this from the partitioning menu.
Clearly 1) I don't care about the contents of /boot - that I will format anyway.
2) I very much do care about /home - I want it to be unchanged.



To see how deep the damage it, I turn off the computer and did a reboot. Apparently 18.04 is gone. I get the error No root file system is defined and /boot/grub/i386-pc/normal... is not found and grub recover wants to help. I don't know if it can actually help and how to use grub recover if it can.



To see if my disk was still intact I did another boot from the disk on key. This time it said I have no OS, but my disk looks unchanged (the /home part)
I can again go through the process of defining the 35GB partition as /boot and the big partition as /home The home partition is about 1/2 used which is what I remember. The /boot partition has 880MB in use.



What can I do to convince the system that all is well. I used the partition editor to change which partition was /boot and which was /home, but this doesn't seem to be enough. I certainly don't want to define a new partition as that would lose me /home (about 1/2 TB of information)



Can anyone suggest me a way out of this mess?



I saw a suggestion to use GParted and there I saw the mess. It had taken my small disk and expanded it to 1/2 the volume. What I see in the install program and GParted are hugely different. I am shrinking the partition down to what is allowed but it is taking a long time. Hopefully it will eventually work.



Things look bad. When I create a new partition, it wants to format it. What I would like to be able to do is make some sort of temporary and move files into it (assuming of course that I can still access the current partition). Is there any hope here or is all lost?



Thanks,










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    For several years I've used Ubuntu (/boot) on a relatively small partition (35GB) and (/home) on essentially all the rest. when things get messy I can format the Linux partition and leave my /home partition untouched.
    Apparently this time I made some slight change and now I am in real trouble.
    Upon Install now I get the notification No root file system. Not root file system defined. Please correct this from the partitioning menu.
    Clearly 1) I don't care about the contents of /boot - that I will format anyway.
    2) I very much do care about /home - I want it to be unchanged.



    To see how deep the damage it, I turn off the computer and did a reboot. Apparently 18.04 is gone. I get the error No root file system is defined and /boot/grub/i386-pc/normal... is not found and grub recover wants to help. I don't know if it can actually help and how to use grub recover if it can.



    To see if my disk was still intact I did another boot from the disk on key. This time it said I have no OS, but my disk looks unchanged (the /home part)
    I can again go through the process of defining the 35GB partition as /boot and the big partition as /home The home partition is about 1/2 used which is what I remember. The /boot partition has 880MB in use.



    What can I do to convince the system that all is well. I used the partition editor to change which partition was /boot and which was /home, but this doesn't seem to be enough. I certainly don't want to define a new partition as that would lose me /home (about 1/2 TB of information)



    Can anyone suggest me a way out of this mess?



    I saw a suggestion to use GParted and there I saw the mess. It had taken my small disk and expanded it to 1/2 the volume. What I see in the install program and GParted are hugely different. I am shrinking the partition down to what is allowed but it is taking a long time. Hopefully it will eventually work.



    Things look bad. When I create a new partition, it wants to format it. What I would like to be able to do is make some sort of temporary and move files into it (assuming of course that I can still access the current partition). Is there any hope here or is all lost?



    Thanks,










    share|improve this question


























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      For several years I've used Ubuntu (/boot) on a relatively small partition (35GB) and (/home) on essentially all the rest. when things get messy I can format the Linux partition and leave my /home partition untouched.
      Apparently this time I made some slight change and now I am in real trouble.
      Upon Install now I get the notification No root file system. Not root file system defined. Please correct this from the partitioning menu.
      Clearly 1) I don't care about the contents of /boot - that I will format anyway.
      2) I very much do care about /home - I want it to be unchanged.



      To see how deep the damage it, I turn off the computer and did a reboot. Apparently 18.04 is gone. I get the error No root file system is defined and /boot/grub/i386-pc/normal... is not found and grub recover wants to help. I don't know if it can actually help and how to use grub recover if it can.



      To see if my disk was still intact I did another boot from the disk on key. This time it said I have no OS, but my disk looks unchanged (the /home part)
      I can again go through the process of defining the 35GB partition as /boot and the big partition as /home The home partition is about 1/2 used which is what I remember. The /boot partition has 880MB in use.



      What can I do to convince the system that all is well. I used the partition editor to change which partition was /boot and which was /home, but this doesn't seem to be enough. I certainly don't want to define a new partition as that would lose me /home (about 1/2 TB of information)



      Can anyone suggest me a way out of this mess?



      I saw a suggestion to use GParted and there I saw the mess. It had taken my small disk and expanded it to 1/2 the volume. What I see in the install program and GParted are hugely different. I am shrinking the partition down to what is allowed but it is taking a long time. Hopefully it will eventually work.



      Things look bad. When I create a new partition, it wants to format it. What I would like to be able to do is make some sort of temporary and move files into it (assuming of course that I can still access the current partition). Is there any hope here or is all lost?



      Thanks,










      share|improve this question















      For several years I've used Ubuntu (/boot) on a relatively small partition (35GB) and (/home) on essentially all the rest. when things get messy I can format the Linux partition and leave my /home partition untouched.
      Apparently this time I made some slight change and now I am in real trouble.
      Upon Install now I get the notification No root file system. Not root file system defined. Please correct this from the partitioning menu.
      Clearly 1) I don't care about the contents of /boot - that I will format anyway.
      2) I very much do care about /home - I want it to be unchanged.



      To see how deep the damage it, I turn off the computer and did a reboot. Apparently 18.04 is gone. I get the error No root file system is defined and /boot/grub/i386-pc/normal... is not found and grub recover wants to help. I don't know if it can actually help and how to use grub recover if it can.



      To see if my disk was still intact I did another boot from the disk on key. This time it said I have no OS, but my disk looks unchanged (the /home part)
      I can again go through the process of defining the 35GB partition as /boot and the big partition as /home The home partition is about 1/2 used which is what I remember. The /boot partition has 880MB in use.



      What can I do to convince the system that all is well. I used the partition editor to change which partition was /boot and which was /home, but this doesn't seem to be enough. I certainly don't want to define a new partition as that would lose me /home (about 1/2 TB of information)



      Can anyone suggest me a way out of this mess?



      I saw a suggestion to use GParted and there I saw the mess. It had taken my small disk and expanded it to 1/2 the volume. What I see in the install program and GParted are hugely different. I am shrinking the partition down to what is allowed but it is taking a long time. Hopefully it will eventually work.



      Things look bad. When I create a new partition, it wants to format it. What I would like to be able to do is make some sort of temporary and move files into it (assuming of course that I can still access the current partition). Is there any hope here or is all lost?



      Thanks,







      grub2 partitioning 18.10






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      edited Nov 20 at 17:21

























      asked Nov 20 at 11:51









      Ilan

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