It seems that grub2 supports GPT alright, but only in its EFI version. If
you want GPT on a PC, some changes are needed.
The attached patch mostly fixes it. The only drawback is that partition
number in prefix/root env variables is corrupted for some reason and you
need to fix it manualy on every boot (set root=foo, etc).
I'm too busy to debug this atm, but maybe you could test it on your >2TiB
disk (appliing patch against latest CVS), to check that the rest is working
fine (my tests were on small GPT disk only).
--
Robert Millan
My spam trap is [EMAIL PROTECTED] Note: this address is only intended
for spam harvesters. Writing to it will get you added to my black list.
diff -x i386-pc.mk -ur grub2.old/conf/i386-pc.rmk grub2/conf/i386-pc.rmk
--- grub2.old/conf/i386-pc.rmk 2007-04-26 16:43:55.000000000 +0200
+++ grub2/conf/i386-pc.rmk 2007-04-26 18:34:04.000000000 +0200
@@ -66,6 +66,7 @@
util/misc.c util/i386/pc/getroot.c kern/device.c kern/disk.c \
kern/err.c kern/misc.c fs/fat.c fs/ext2.c fs/xfs.c fs/affs.c \
fs/sfs.c kern/parser.c kern/partition.c partmap/pc.c \
+ partmap/gpt.c \
fs/ufs.c fs/minix.c fs/hfs.c fs/jfs.c fs/hfsplus.c kern/file.c \
kern/fs.c kern/env.c fs/fshelp.c util/raid.c util/lvm.c
@@ -77,6 +78,7 @@
util/i386/pc/biosdisk.c util/misc.c util/i386/pc/getroot.c \
kern/device.c kern/disk.c kern/err.c kern/misc.c fs/fat.c \
fs/ext2.c kern/parser.c kern/partition.c partmap/pc.c fs/ufs.c \
+ partmap/gpt.c \
fs/minix.c fs/hfs.c fs/jfs.c kern/fs.c kern/env.c fs/fshelp.c \
fs/xfs.c fs/affs.c fs/sfs.c fs/hfsplus.c disk/lvm.c disk/raid.c
diff -x i386-pc.mk -ur grub2.old/util/i386/pc/grub-install.in grub2/util/i386/pc/grub-install.in
--- grub2.old/util/i386/pc/grub-install.in 2007-04-26 16:43:55.000000000 +0200
+++ grub2/util/i386/pc/grub-install.in 2007-04-26 16:46:37.000000000 +0200
@@ -216,8 +216,8 @@
exit 1
fi
-# Typically, _chain and pc are required.
-modules="$modules $fs_module _chain pc"
+# Typically, _chain, pc and gpt are required.
+modules="$modules $fs_module _chain pc gpt"
$grub_mkimage --output=${grubdir}/core.img $modules || exit 1
diff -x i386-pc.mk -ur grub2.old/util/i386/pc/grub-probe.c grub2/util/i386/pc/grub-probe.c
--- grub2.old/util/i386/pc/grub-probe.c 2007-04-26 16:43:55.000000000 +0200
+++ grub2/util/i386/pc/grub-probe.c 2007-04-26 18:34:54.000000000 +0200
@@ -244,6 +244,7 @@
/* Initialize the emulated biosdisk driver. */
grub_util_biosdisk_init (dev_map ? : DEFAULT_DEVICE_MAP);
grub_pc_partition_map_init ();
+ grub_gpt_partition_map_init ();
grub_raid_init ();
grub_lvm_init ();
@@ -268,6 +269,7 @@
grub_lvm_fini ();
grub_raid_fini ();
+ grub_gpt_partition_map_fini ();
grub_pc_partition_map_fini ();
grub_util_biosdisk_fini ();
diff -x i386-pc.mk -ur grub2.old/util/i386/pc/grub-setup.c grub2/util/i386/pc/grub-setup.c
--- grub2.old/util/i386/pc/grub-setup.c 2007-04-26 16:43:55.000000000 +0200
+++ grub2/util/i386/pc/grub-setup.c 2007-04-26 18:35:43.000000000 +0200
@@ -293,7 +293,9 @@
root_dev->disk->partition->data;
if (strcmp (root_dev->disk->partition->partmap->name,
- "pc_partition_map") != 0)
+ "pc_partition_map")
+ && strcmp (root_dev->disk->partition->partmap->name,
+ "gpt_partition_map"))
grub_util_error ("No PC style partitions found");
*install_dos_part
@@ -453,7 +455,9 @@
root_dev->disk->partition->data;
if (strcmp (root_dev->disk->partition->partmap->name,
- "pc_partition_map") != 0)
+ "pc_partition_map")
+ && strcmp (root_dev->disk->partition->partmap->name,
+ "gpt_partition_map"))
grub_util_error ("No PC style partitions found");
*install_dos_part
@@ -644,6 +648,7 @@
/* Initialize the emulated biosdisk driver. */
grub_util_biosdisk_init (dev_map ? : DEFAULT_DEVICE_MAP);
grub_pc_partition_map_init ();
+ grub_gpt_partition_map_init ();
dest_dev = get_device_name (argv[optind]);
if (! dest_dev)
@@ -745,6 +750,7 @@
grub_hfs_fini ();
grub_jfs_fini ();
+ grub_gpt_partition_map_fini ();
grub_pc_partition_map_fini ();
grub_util_biosdisk_fini ();
