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nixpkgs/pkgs/tools/misc/grub/buggybios.patch
Lluís Batlle i Rossell 3a8a3c91f7 Adding a patch for grub, so livecds with grub can still boot with buggy bioses,
as those of Acer 292LMi or Airis N990. This allows booting the NixOS ISO releases.
I made it optional, not included by default. I don't think it would harm at all enabling
it always - let it be decided on forum.

svn path=/nixpkgs/trunk/; revision=16341
2009-07-13 16:57:33 +00:00

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555 B
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Taken from: http://savannah.gnu.org/bugs/?func=detailitem&item_id=10433
--- grub-0.95.orig/stage2/bios.c 2004-03-27 17:34:04.000000000 +0100
+++ grub-0.95/stage2/bios.c 2005-03-02 01:02:29.192582200 +0100
@@ -147,6 +147,7 @@
grub_memset (&cdrp, 0, sizeof (cdrp));
cdrp.size = sizeof (cdrp) - sizeof (cdrp.dummy);
err = biosdisk_int13_extensions (0x4B01, drive, &cdrp);
+ err = 0; /* really ugly hack to circumvent faulty BIOS versions like Acer 292LMi */
if (! err && cdrp.drive_no == drive)
{
if ((cdrp.media_type & 0x0F) == 0)