[Bug 527897] Re: cannot boot windows after update-grub

Marcus Tomlinson marcus.tomlinson at canonical.com
Thu Mar 5 12:38:59 UTC 2020


This release of Ubuntu is no longer receiving maintenance updates. If
this is still an issue on a maintained version of Ubuntu please let us
know.

** Changed in: grub2 (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/527897

Title:
  cannot boot windows after update-grub

Status in grub2 package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: grub2

  after running update-grub the windows entry looks like  this

  ### BEGIN /etc/grub.d/30_os-prober ###
  menuentry "Windows 7 (loader) (on /dev/sde1)" {
  	chainloader +1
  }
  ### END /etc/grub.d/30_os-prober ###

  this will NOT boot windows. "Inavlid signature" error message.

  The original after installation which boots ok looks like this

  ### BEGIN /etc/grub.d/30_os-prober ###
  menuentry "Windows 7 (loader) (on /dev/sda1)" {
  	insmod ntfs
  	set root=(hd0,1)
  	search --no-floppy --fs-uuid --set 90940fdf940fc6a6
  	chainloader +1
  }
  ### END /etc/grub.d/30_os-prober ###

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