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I am trying to run Windows 7 and Ubuntu 13.10 both on the same machine. But when I first installed Ubuntu, I was unable to boot Windows 7. There was an error coming up saying: disk read error. Later I fixed it using fixboot and got my Windows 7 back, and now I'm unable to boot Ubuntu.

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Check if secure boot was enabled when you did boot-repair.

You may have to disable/enable secure boot (check BIOS). In my experience with boot-repair, I had to check use EFI partition to get dual boot working.

More info at Boot-Repair - Ubuntu Community Documentation

  • i tried my bios for secure boot, i couldnt find that option. i will try this EFI partition. – user280307 Dec 9 '13 at 2:25

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