Bug#550632: Possible Fix for the Issue

First and Second Name derfderfd at googlemail.com
Wed Nov 11 09:57:11 UTC 2009


I also have this issue on my intel based dv9000, it seems to be a bios
issue. This patched was created by phcoder in #grub on irc.freenode.net

--- Orig/grub2-1.97+experimental.20091026/kern/i386/pc/startup.S 2009-10-26
01:05:30.000000000 +0000
+++ V04/grub2-1.97+experimental.20091026/kern/i386/pc/startup.S 2009-11-10
14:31:11.567518029 +0000
@@ -776,6 +777,11 @@
        movw    %cx, %ax
        movw    %bx, %ds
        int     $0x13           /* do the operation */
+       jc      noclean
+       /* Clean return value if carry isn't set to workaround
+       some buggy BIOSes.  */
+       xor     %ax, %ax
+noclean:
        movb    %ah, %bl        /* save return value in %bl */
        /* back to protected mode */
        DATA32  call    real_to_prot
@@ -820,6 +826,9 @@
        movb    $0x8, %ah
        int     $0x13           /* do the operation */
        /* check if successful */
+       jc      noclean2
+       xor %ax, %ax
+noclean2:
        testb   %ah, %ah
        jnz     1f
        /* bogus BIOSes may not return an error number */

The patch should now be in grub2's experimental source repo.

It fixed the issue for me.
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