Dual boot but now Win 7 does not boot, yet it is listed in GRUB











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I know this has probably been answered many times before, so please send me links if you know.



I had Ubuntu 16.04 (three years ago), added Windows 7 (two years ago). Setting it up was very hard, but I did it successfully (Ubuntu on hda1, Win 7 on hda2).



Last month, I had a failure loading Ubuntu, but Windows could launch using a Boot CD and Boot Manager (pointed to hda2).
Last night I reinstalled Ubuntu (18.04) from a Live DVD in the original partition.
BUT
Now Windows cannot load, either from GRUB (it is listed there) or from one of those Boot Managers that point to hda2. Instead, I get a complicated series of error messages from grub (recalculating checksums, advice to run "bootsect /nt60 SYS /force", others).



Can this be easily fixed?










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  • Need to see output of grep -A10 -i Windows /boot/grub/grub.cfg and sudo parted -l.
    – Paul Benson
    Nov 19 at 19:55










  • Problem solved! Elsewhere, I followed the following tip. 1. In grub, highlight Windows 7, then press the key <e> 2. Add the following line after the line <insmod ntfs> insmod ntldr 3. Replace the line chainloader +1 with he line ntldr ($root)/bootmgr The original thread is here: askubuntu.com/questions/135272/…
    – Cliff Sloane
    Nov 19 at 22:51

















up vote
0
down vote

favorite












I know this has probably been answered many times before, so please send me links if you know.



I had Ubuntu 16.04 (three years ago), added Windows 7 (two years ago). Setting it up was very hard, but I did it successfully (Ubuntu on hda1, Win 7 on hda2).



Last month, I had a failure loading Ubuntu, but Windows could launch using a Boot CD and Boot Manager (pointed to hda2).
Last night I reinstalled Ubuntu (18.04) from a Live DVD in the original partition.
BUT
Now Windows cannot load, either from GRUB (it is listed there) or from one of those Boot Managers that point to hda2. Instead, I get a complicated series of error messages from grub (recalculating checksums, advice to run "bootsect /nt60 SYS /force", others).



Can this be easily fixed?










share|improve this question






















  • Need to see output of grep -A10 -i Windows /boot/grub/grub.cfg and sudo parted -l.
    – Paul Benson
    Nov 19 at 19:55










  • Problem solved! Elsewhere, I followed the following tip. 1. In grub, highlight Windows 7, then press the key <e> 2. Add the following line after the line <insmod ntfs> insmod ntldr 3. Replace the line chainloader +1 with he line ntldr ($root)/bootmgr The original thread is here: askubuntu.com/questions/135272/…
    – Cliff Sloane
    Nov 19 at 22:51















up vote
0
down vote

favorite









up vote
0
down vote

favorite











I know this has probably been answered many times before, so please send me links if you know.



I had Ubuntu 16.04 (three years ago), added Windows 7 (two years ago). Setting it up was very hard, but I did it successfully (Ubuntu on hda1, Win 7 on hda2).



Last month, I had a failure loading Ubuntu, but Windows could launch using a Boot CD and Boot Manager (pointed to hda2).
Last night I reinstalled Ubuntu (18.04) from a Live DVD in the original partition.
BUT
Now Windows cannot load, either from GRUB (it is listed there) or from one of those Boot Managers that point to hda2. Instead, I get a complicated series of error messages from grub (recalculating checksums, advice to run "bootsect /nt60 SYS /force", others).



Can this be easily fixed?










share|improve this question













I know this has probably been answered many times before, so please send me links if you know.



I had Ubuntu 16.04 (three years ago), added Windows 7 (two years ago). Setting it up was very hard, but I did it successfully (Ubuntu on hda1, Win 7 on hda2).



Last month, I had a failure loading Ubuntu, but Windows could launch using a Boot CD and Boot Manager (pointed to hda2).
Last night I reinstalled Ubuntu (18.04) from a Live DVD in the original partition.
BUT
Now Windows cannot load, either from GRUB (it is listed there) or from one of those Boot Managers that point to hda2. Instead, I get a complicated series of error messages from grub (recalculating checksums, advice to run "bootsect /nt60 SYS /force", others).



Can this be easily fixed?







dual-boot grub2 windows-7






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asked Nov 19 at 18:28









Cliff Sloane

12




12












  • Need to see output of grep -A10 -i Windows /boot/grub/grub.cfg and sudo parted -l.
    – Paul Benson
    Nov 19 at 19:55










  • Problem solved! Elsewhere, I followed the following tip. 1. In grub, highlight Windows 7, then press the key <e> 2. Add the following line after the line <insmod ntfs> insmod ntldr 3. Replace the line chainloader +1 with he line ntldr ($root)/bootmgr The original thread is here: askubuntu.com/questions/135272/…
    – Cliff Sloane
    Nov 19 at 22:51




















  • Need to see output of grep -A10 -i Windows /boot/grub/grub.cfg and sudo parted -l.
    – Paul Benson
    Nov 19 at 19:55










  • Problem solved! Elsewhere, I followed the following tip. 1. In grub, highlight Windows 7, then press the key <e> 2. Add the following line after the line <insmod ntfs> insmod ntldr 3. Replace the line chainloader +1 with he line ntldr ($root)/bootmgr The original thread is here: askubuntu.com/questions/135272/…
    – Cliff Sloane
    Nov 19 at 22:51


















Need to see output of grep -A10 -i Windows /boot/grub/grub.cfg and sudo parted -l.
– Paul Benson
Nov 19 at 19:55




Need to see output of grep -A10 -i Windows /boot/grub/grub.cfg and sudo parted -l.
– Paul Benson
Nov 19 at 19:55












Problem solved! Elsewhere, I followed the following tip. 1. In grub, highlight Windows 7, then press the key <e> 2. Add the following line after the line <insmod ntfs> insmod ntldr 3. Replace the line chainloader +1 with he line ntldr ($root)/bootmgr The original thread is here: askubuntu.com/questions/135272/…
– Cliff Sloane
Nov 19 at 22:51






Problem solved! Elsewhere, I followed the following tip. 1. In grub, highlight Windows 7, then press the key <e> 2. Add the following line after the line <insmod ntfs> insmod ntldr 3. Replace the line chainloader +1 with he line ntldr ($root)/bootmgr The original thread is here: askubuntu.com/questions/135272/…
– Cliff Sloane
Nov 19 at 22:51

















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