Ubuntu
grub2 package

  1. Bug #741799
  2. Comment #2

Comment 2 for bug 741799

Revision history for this message
Kent Baxley (kentb) wrote :

We can get the operating system to boot 'by hand' in AHCI mode by doing the following:

The system was reinstalled using the AHCI SATA option in BIOS. After installation, we sre dropped to a 'grub rescue' prompt when the OS tries to boot.

Typing the 'set' command at the grub prompt reveals that the prefix is set correctly.

prefix=(hd0,msdos1)/boot/grub

From there, the kernel and initrd can be loaded manually, the root device set, and the OS will boot.

grub> linux /vmlinuz root=/dev/sda1 ro
grub> initrd /initrd.img
grub> boot

Those steps will get the operating system booted in AHCI mode. None of this is required if the SATA mode in the BIOS is changed to ATA or RaidOn.