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no such disk error occured.

I tried to format and reinstall 12.04, the problem remained. I also repaired with boot-repair, the problem remained. is url of the details.

server is dell R710, the bios is set to uefi and disk is raid0 gpt. I typed commands in grub rescue:

  • ls (hd0, gpt2), `no such partition' is shown
  • set, `prefix=((null),gpt2)/grub' is shown

I don't know why /efi/ubuntu/grubx64.efi doesn't recognize disk. another strange thing is that there is only 1 file in /efi/ubuntu

share|improve this question
this is a bug of ubuntu 12.04 LTS I burn a 11.10 live USB and boot using 12.04 menuentry, it succeeded. – Cailiang Liu Sep 25 '12 at 11:30

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