Dual Boot Ubuntu and Windows 7: BOOTMGR is missing when I tried to boot in Windows
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Sounds like there's a good chance something is broken with Windows which is causing Ubuntu not to recognise it properly. Try following the instructions here to fix Windows and then here afterwards to reinstall Grub.
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Author by
Simon Polak
Updated on September 18, 2022Comments
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Simon Polak over 1 year
So, I don't know what exactly how I managed to delete the MBR record on windows partition. But let me explain what I did next, I ran the ubuntu boot repair tool and now Windows is not even listed in my grub loader.
So I went and booted with windows cd and choose repair. Then I ran ubuntu boot repair again via live cd. Here is the log http://paste.ubuntu.com/1426181/. Still no luck.
Looks like osprobe can't detect windows on my /dev/sda2 partition. Any clues ?
Here is how my partitions look like:
Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x525400d1 Device Boot Start End Blocks Id System /dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT /dev/sda2 206848 509620669 254706911 7 HPFS/NTFS/exFAT /dev/sda3 509622270 976773119 233575425 5 Extended /dev/sda5 509622272 957757439 224067584 83 Linux /dev/sda6 957759488 976773119 9506816 82 Linux swap / Solaris
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Exeleration-G over 8 yearsPossible duplicate of Fixing Windows7 Bootmgr
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Simon Polak over 11 yearsThank you for your answer. I got it working now. The problem was that I didn't go through windows repair correctly. Did a windows repair again and didn't even have to do the grub reinstall, since I already manually added the windows partition to my grub settings.
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Simon Polak over 11 yearsForgot to mention, I also put the boot flag on the sda2 partition using gparted.