Ubuntu
grub package

  1. Bug #8497
  2. Comment #10

Comment 10 for bug 8497

Revision history for this message
Michael Vogt (mvo) wrote : Re: incorrect GRUB root device calculated from device name (SATA disk)

Pondering a bit about the bug I thought about using the linux real mode
interrupt (lrmi) interface (that vbetool already uses) to figure the bios driver
order. The interessting bit here is int 13h/ah=48h
(http://www.ctyme.com/intr/rb-0715.htm) to get drive information. I wrote some
testcode (based on vbetool) at
http://people.ubuntu.com/~mvo/hacks/hddhack-0.0.tar.gz. Calling the interrupts
works pretty well but I seem to be unable to get the drive information into a
real-mode buffer :/

Another idea would be to use the partition label or uuid to figure the
boot-partition but that would involve a lot more work than the rather simple
approach above.