[Bug 990888] Re: grub2 wont boot from USB any more

[Tom Hibbert]

I tested this tonight using a 10.10 boot cd and it worked fine. 201000804-5ubuntu3
11.10 didnt work, and precise didnt work.

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Title:
  grub2 wont boot from USB any more

Status in “grub2” package in Ubuntu:
  New

Bug description:
  Sometime between June 13, 2011 and the release date of grub-pc
  1.99-12ubuntu5 a change was committed to grub2 which prevents it
  booting from a USB key on my laptop (Asus M5000).

  Using syntax: grub-install /dev/sdb --root-directory=/media/usbdisk
  installs successfully, on reboot results in: Bad or missing operating
  system, reboot or select valid boot device. The resulting usb key
  boots successfuly under virtualbox.

  A workaround is possible by chainloading grub from syslinux, although
  this is painful.

  I have investigated the issue with Jordan_U of #grub on freenode.  We
  tried a grub-mkrescue image from #4248 without success.

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