Hello,
here are two patches for the current grub version (CVS head)
which fix a major problem in disk_io.c and a minor spelling
bug in pc_slice.h. The bug in disk_io.c was introduced after
grub-0.5.93.1.
Problem summary:
grub does not support a file system on an extended partitions.
Tab expansion recognizes the file system correctly, but command
"root" (and others) fail. See grub output logs for details.
Regards,
Stefan Weil
- grub output (CVS head version)
----------------------------------------------
grub> root (hd0,
Possible partitions are:
Partition num: 0, Filesystem type is fat, partition type 0x6
Partition num: 1, Filesystem type is ext2fs, partition type 0x83
Partition num: 4, Filesystem type unknown, partition type 0x82
Partition num: 5, Filesystem type is ext2fs, partition type 0x83
Partition num: 6, Filesystem type is ext2fs, partition type 0x83
grub> root (hd0,6)
Filesystem type unknown, partition type 0x5
- grub output (after bug fix)
-------------------------------------------------
grub> root (hd0,
Possible partitions are:
Partition num: 0, Filesystem type is fat, partition type 0x6
Partition num: 1, Filesystem type is ext2fs, partition type 0x83
Partition num: 4, Filesystem type unknown, partition type 0x82
Partition num: 5, Filesystem type is ext2fs, partition type 0x83
Partition num: 6, Filesystem type is ext2fs, partition type 0x83
grub> root (hd0,6)
Filesystem type is ext2fs, partition type 0x83
- fdisk output from Linux
-----------------------------------------------------
bash-2.03$ sudo fdisk
Using /dev/hda as default device!
Command (m for help): p
Disk /dev/hda: 64 heads, 63 sectors, 1023 cylinders
Units = cylinders of 4032 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 254 512032+ 6 FAT16
/dev/hda2 255 610 717696 83 Linux
/dev/hda3 611 1023 832608 5 Extended
/dev/hda5 611 643 66496+ 82 Linux swap
/dev/hda6 * 644 709 133024+ 83 Linux
/dev/hda7 710 1023 632992 83 Linux
- values traced in grub function real_open_partition()
------------------------
slice_no current_slice
0 6
1 83
2 5
3 0
4 82
5 5 <--- real_open_partition(0) returned this entry ...
0
0
83
6 5 <--- ... or this one.
0
0
83
7 0
- patches
---------------------------------------------------------------------
bash-2.03$ cvs -q diff -u
Index: stage2/disk_io.c
===================================================================
RCS file: /gd/gnu/anoncvsroot/grub/stage2/disk_io.c,v
retrieving revision 1.23
diff -u -r1.23 disk_io.c
--- disk_io.c 1999/11/13 09:39:43 1.23
+++ disk_io.c 1999/11/27 21:08:06
@@ -574,6 +574,7 @@
* If we've found the right partition, we're done
*/
if (! flags
+ && ! IS_PC_SLICE_TYPE_EXTENDED (current_slice)
&& (part_no == slice_no
|| (part_no == 0xFF
&& IS_PC_SLICE_TYPE_BSD (current_slice))))
Index: stage2/pc_slice.h
===================================================================
RCS file: /gd/gnu/anoncvsroot/grub/stage2/pc_slice.h,v
retrieving revision 1.6
diff -u -r1.6 pc_slice.h
--- pc_slice.h 1999/09/13 13:32:31 1.6
+++ pc_slice.h 1999/11/27 21:08:06
@@ -1,4 +1,3 @@
-
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1996 Erich Boleyn <[EMAIL PROTECTED]>
@@ -122,7 +121,7 @@
(((type) == PC_SLICE_TYPE_EXTENDED) \
|| ((type) == PC_SLICE_TYPE_WIN95_EXTENDED))
-/* these ones are special, as they use thier own partitioning scheme
+/* these ones are special, as they use their own partitioning scheme
to subdivide the PC partitions from there. */
#define PC_SLICE_TYPE_FREEBSD 0xa5
#define PC_SLICE_TYPE_OPENBSD 0xa6
