grub: removed, closes FS#1690

This commit is contained in:
Juergen Daubert 2018-11-22 15:09:49 +01:00
parent bac2662de8
commit 41b60a7483
8 changed files with 0 additions and 556 deletions

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@ -1,38 +0,0 @@
drwxr-xr-x root/root boot/
drwxr-xr-x root/root boot/grub/
-rw-r--r-- root/root boot/grub/crux02.xpm.gz
-rw-r--r-- root/root boot/grub/crux03.xpm.gz
-rw-r--r-- root/root boot/grub/menu.lst.sample
drwxr-xr-x root/root sbin/
-rwxr-xr-x root/root sbin/grub
-rwxr-xr-x root/root sbin/grub-install
-rwxr-xr-x root/root sbin/grub-md5-crypt
-rwxr-xr-x root/root sbin/grub-set-default
-rwxr-xr-x root/root sbin/grub-terminfo
drwxr-xr-x root/root usr/
drwxr-xr-x root/root usr/bin/
-rwxr-xr-x root/root usr/bin/mbchk
drwxr-xr-x root/root usr/share/
drwxr-xr-x root/root usr/share/grub/
drwxr-xr-x root/root usr/share/grub/x86_64-unknown/
-rw-r--r-- root/root usr/share/grub/x86_64-unknown/e2fs_stage1_5
-rw-r--r-- root/root usr/share/grub/x86_64-unknown/fat_stage1_5
-rw-r--r-- root/root usr/share/grub/x86_64-unknown/ffs_stage1_5
-rw-r--r-- root/root usr/share/grub/x86_64-unknown/iso9660_stage1_5
-rw-r--r-- root/root usr/share/grub/x86_64-unknown/jfs_stage1_5
-rw-r--r-- root/root usr/share/grub/x86_64-unknown/minix_stage1_5
-rw-r--r-- root/root usr/share/grub/x86_64-unknown/reiserfs_stage1_5
-rw-r--r-- root/root usr/share/grub/x86_64-unknown/stage1
-rw-r--r-- root/root usr/share/grub/x86_64-unknown/stage2
-rw-r--r-- root/root usr/share/grub/x86_64-unknown/stage2_eltorito
-rw-r--r-- root/root usr/share/grub/x86_64-unknown/ufs2_stage1_5
-rw-r--r-- root/root usr/share/grub/x86_64-unknown/vstafs_stage1_5
-rw-r--r-- root/root usr/share/grub/x86_64-unknown/xfs_stage1_5
drwxr-xr-x root/root usr/share/man/
drwxr-xr-x root/root usr/share/man/man1/
-rw-r--r-- root/root usr/share/man/man1/mbchk.1.gz
drwxr-xr-x root/root usr/share/man/man8/
-rw-r--r-- root/root usr/share/man/man8/grub-install.8.gz
-rw-r--r-- root/root usr/share/man/man8/grub-md5-crypt.8.gz
-rw-r--r-- root/root usr/share/man/man8/grub-terminfo.8.gz
-rw-r--r-- root/root usr/share/man/man8/grub.8.gz

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@ -1,12 +0,0 @@
untrusted comment: verify with /etc/ports/opt.pub
RWSE3ohX2g5d/c8ACuSQy/3MTX0gbaREkBv/FFF563Qi0riFeiUK7kHomaqfwGhkc7wPFAK+PaWiUfNufPUTJvd1zedjaEgBtA8=
SHA256 (Pkgfile) = 5d0e4058bff29de0753d614405938d4751ea7909b0e1e2a78e57ff60827aad5d
SHA256 (.footprint) = 81646332cfd43eb9cb86efc901acf74c353f28a923b79886aafed3d60ca16f37
SHA256 (grub-0.97.tar.gz) = 4e1d15d12dbd3e9208111d6b806ad5a9857ca8850c47877d36575b904559260b
SHA256 (grub-0.97-patches-2.tar.bz2) = 8f4c3b3d347dcb3ee2bf7c562453d010cc1fb34621d2d10cb8c57b65161583b3
SHA256 (automake.patch) = 30c2e5fc8cc092af739b9a18035cabdf2edff910d2d7c3ec4912c3addb0f107b
SHA256 (ext4.patch) = b7eb19affe0d2cf21e7a24491ad349c49cc3ddbcf27183a607ffde39dc0fde18
SHA256 (grub-qemu.patch) = c23c8b1f03083f13d8be3a391354594beac286a59734fbc8247126cfc633be1d
SHA256 (crux02.xpm.gz) = 84308a83bf6138ac34874827a79d6af0330fde57d650197e55b301cc3045196d
SHA256 (crux03.xpm.gz) = 4b280bcc93ad40b01e7c1f9cf845f664954ab3c45267855ffdb40f39fd44f665
SHA256 (menu.lst.sample) = 33b480cbb2f0c2765d86c378b7ff480eb3507b4007382246ca8e28e3693dfb82

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@ -1,50 +0,0 @@
# Description: GNU GRUB (GRand Unified Bootloader)
# URL: http://www.gnu.org/software/grub/
# Packager: Lucas Hazel, lucas at die dot net dot au
# Maintainer: Alan Mizrahi, alan at mizrahi dot com dot ve
# Depends on: gettext
name=grub
version=0.97
release=8
source=(
ftp://alpha.gnu.org/gnu/grub/$name-$version.tar.gz
http://crux.nu/files/grub/0.97/$name-$version-patches-2.tar.bz2
automake.patch
ext4.patch
grub-qemu.patch
http://crux.nu/files/grub/common/crux02.xpm.gz
http://crux.nu/files/grub/common/crux03.xpm.gz
menu.lst.sample
)
build () {
cd $name-$version
# automake 1.10 fix
sed -i '19i\AM_PROG_AS' configure.ac
for i in $SRC/*.patch; do
patch -p1 -i $i
done
# We really shouldn't optimise GRUB at all.
unset CXXFLAGS
unset CFLAGS
autoreconf --install --force
./configure --prefix=/usr \
--libdir=/usr/share \
--mandir=/usr/share/man \
--sbindir=/sbin \
--disable-nls \
--disable-auto-linux-mem-opt
make
make DESTDIR=$PKG install
rm -rf $PKG/usr/share/info
mkdir -p $PKG/boot/grub
install -m 644 $SRC/{crux*,menu.lst.sample} $PKG/boot/grub/
}

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@ -1,71 +0,0 @@
REQUIREMENTS
PRE-INSTALL
POST-INSTALL
Automatic setup using grub-install
After installation you should create your own boot menu:
# # Copy sample file
# cp /boot/grub/menu.lst.sample /boot/grub/menu.lst
# # Modify it for your system
# vi /boot/grub/menu.lst
For more information about setting up your own grub boot menu file:
http://www.gnu.org/software/grub/manual/grub.html#Configuration
After making your boot menu you should run grub-install like so:
# grub-install /dev/sdX
In the example above, X needs to be replaced with your hard drive.
Manual setup
After installation you need to copy the stage files to /boot/grub/:
# cp /usr/share/grub/*/*stage* /boot/grub/
(Of course, you can choose another location as described above but this guide
assumes that you use /boot/grub. Normally you need only the files stage1 and
stage2. Please read the grub documentation if you don't know why:
http://www.uruk.org/orig-grub/ and
http://www.gnu.org/software/grub/manual/grub.html)
Now it's time to create your own "boot menu":
# # Copy sample file
# cp /boot/grub/menu.lst.sample /boot/grub/menu.lst
# # Modify it for your system
# vi /boot/grub/menu.lst
For more information about setting up your own grub boot menu file:
http://www.gnu.org/software/grub/manual/grub.html#Configuration
Last but not least, install/enable the boot manager:
# # If the boot partition is mounted, you must specify --stage2, like below.
# # Otherwise, you may remove this.
# # Run grub
# grub
grub> root (hdX,Y)
grub> setup --stage2=/boot/grub/stage2 (hdX)
grub> quit
Please correct the path and device names according to your configuration. Also
see http://www.gnu.org/software/grub/manual/grub.html#Installation. In the
example above, X and Y need to be replaced with your hard drive and grub
partition.
That's all. Good luck ;)
PRECAUTION
Installing a new boot manager is like modifying the partition table
or installing a new system kernel. Please create a rescue disk first :)
Brett Goulder <predatorfreak@dcaf-security.org>

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@ -1,45 +0,0 @@
--- grub-0.97/stage1/Makefile.am.orig 2012-02-27 10:28:38.000000000 +0900
+++ grub-0.97/stage1/Makefile.am 2012-02-27 10:29:32.000000000 +0900
@@ -1,5 +1,5 @@
-pkglibdir = $(libdir)/$(PACKAGE)/$(host_cpu)-$(host_vendor)
-nodist_pkglib_DATA = stage1
+stagedir = $(libdir)/$(PACKAGE)/$(host_cpu)-$(host_vendor)
+nodist_stage_DATA = stage1
CLEANFILES = $(nodist_pkglib_DATA)
--- grub-0.97/stage2/Makefile.am.orig 2012-02-27 10:29:39.000000000 +0900
+++ grub-0.97/stage2/Makefile.am 2012-02-27 10:30:37.000000000 +0900
@@ -27,12 +27,12 @@
-DUSE_MD5_PASSWORDS=1 -DSUPPORT_SERIAL=1 -DSUPPORT_HERCULES=1
# Stage 2 and Stage 1.5's.
-pkglibdir = $(libdir)/$(PACKAGE)/$(host_cpu)-$(host_vendor)
+stagedir = $(libdir)/$(PACKAGE)/$(host_cpu)-$(host_vendor)
EXTRA_PROGRAMS = nbloader.exec pxeloader.exec diskless.exec
if DISKLESS_SUPPORT
-pkglib_DATA = stage2 stage2_eltorito e2fs_stage1_5 fat_stage1_5 \
+stage_DATA = stage2 stage2_eltorito e2fs_stage1_5 fat_stage1_5 \
ffs_stage1_5 iso9660_stage1_5 jfs_stage1_5 minix_stage1_5 \
reiserfs_stage1_5 ufs2_stage1_5 vstafs_stage1_5 xfs_stage1_5 \
nbgrub pxegrub
@@ -43,7 +43,7 @@
reiserfs_stage1_5.exec ufs2_stage1_5.exec vstafs_stage1_5.exec \
xfs_stage1_5.exec nbloader.exec pxeloader.exec diskless.exec
else
-pkglib_DATA = stage2 stage2_eltorito e2fs_stage1_5 fat_stage1_5 \
+stage_DATA = stage2 stage2_eltorito e2fs_stage1_5 fat_stage1_5 \
ffs_stage1_5 iso9660_stage1_5 jfs_stage1_5 minix_stage1_5 \
reiserfs_stage1_5 ufs2_stage1_5 vstafs_stage1_5 xfs_stage1_5
noinst_DATA = pre_stage2 start start_eltorito
@@ -112,7 +112,7 @@
BUILT_SOURCES = stage2_size.h
endif
-CLEANFILES = $(pkglib_DATA) $(noinst_DATA) $(BUILT_SOURCES)
+CLEANFILES = $(stage_DATA) $(noinst_DATA) $(BUILT_SOURCES)
stage2_size.h: pre_stage2
-rm -f stage2_size.h

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@ -1,263 +0,0 @@
diff -ruNp grub-0.97/stage2/fsys_ext2fs.c grub-0.97-patch/stage2/fsys_ext2fs.c
--- grub-0.97/stage2/fsys_ext2fs.c 2004-08-08 20:19:18.000000000 +0200
+++ grub-0.97-patch/stage2/fsys_ext2fs.c 2007-12-29 16:25:19.000000000
+0100
@@ -51,6 +51,9 @@ typedef unsigned int __u32;
#define EXT2_TIND_BLOCK (EXT2_DIND_BLOCK + 1)
#define EXT2_N_BLOCKS (EXT2_TIND_BLOCK + 1)
+/* Inode flags */
+#define EXT4_EXTENTS_FL 0x00080000 /* Inode uses extents */
+
/* include/linux/ext2_fs.h */
struct ext2_super_block
{
@@ -191,6 +194,42 @@ struct ext2_dir_entry
#define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
~EXT2_DIR_ROUND)
+/* linux/ext4_fs_extents.h */
+/*
+ * This is the extent on-disk structure.
+ * It's used at the bottom of the tree.
+ */
+struct ext4_extent {
+ __u32 ee_block; /* first logical block extent covers */
+ __u16 ee_len; /* number of blocks covered by extent */
+ __u16 ee_start_hi; /* high 16 bits of physical block */
+ __u32 ee_start; /* low 32 bits of physical block */
+};
+
+/*
+ * This is index on-disk structure.
+ * It's used at all the levels except the bottom.
+ */
+struct ext4_extent_idx {
+ __u32 ei_block; /* index covers logical blocks from 'block' */
+ __u32 ei_leaf; /* pointer to the physical block of the next *
+ * level. leaf or next index could be there */
+ __u16 ei_leaf_hi; /* high 16 bits of physical block */
+ __u16 ei_unused;
+};
+
+/*
+ * Each block (leaves and indexes), even inode-stored has header.
+ */
+struct ext4_extent_header {
+ __u16 eh_magic; /* probably will support different formats */
+ __u16 eh_entries; /* number of valid entries */
+ __u16 eh_max; /* capacity of store in entries */
+ __u16 eh_depth; /* has tree real underlying blocks? */
+ __u32 eh_generation; /* generation of the tree */
+};
+
+#define EXT4_EXT_MAGIC 0xf30a
/* ext2/super.c */
#define log2(n) ffz(~(n))
@@ -279,6 +318,26 @@ ext2_rdfsb (int fsblock, int buffer)
EXT2_BLOCK_SIZE (SUPERBLOCK), (char *) buffer);
}
+/* Walk through extents index tree to find the good leaf */
+static struct ext4_extent_header *
+ext4_recurse_extent_index(struct ext4_extent_header *extent_block, int logical_block)
+{
+ int i;
+ struct ext4_extent_idx *index = (struct ext4_extent_idx *) (extent_block + 1);
+ if (extent_block->eh_magic != EXT4_EXT_MAGIC)
+ return NULL;
+ if (extent_block->eh_depth == 0)
+ return extent_block;
+ for (i = 0; i < extent_block->eh_entries; i++)
+ {
+ if (logical_block < index[i].ei_block)
+ break;
+ }
+ if (i == 0 || !ext2_rdfsb(index[i-1].ei_leaf, DATABLOCK1))
+ return NULL;
+ return (ext4_recurse_extent_index((struct ext4_extent_header *) DATABLOCK1, logical_block));
+}
+
/* from
ext2/inode.c:ext2_bmap()
*/
--- grub-0.97/stage2/fsys_ext2fs.c~ 2008-12-28 20:19:00.000000000 +0100
+++ grub-0.97/stage2/fsys_ext2fs.c 2008-12-28 20:19:00.000000000 +0100
@@ -366,83 +366,106 @@
}
printf ("logical block %d\n", logical_block);
#endif /* E2DEBUG */
-
- /* if it is directly pointed to by the inode, return that physical addr */
- if (logical_block < EXT2_NDIR_BLOCKS)
- {
-#ifdef E2DEBUG
- printf ("returning %d\n", (unsigned char *) (INODE->i_block[logical_block]));
- printf ("returning %d\n", INODE->i_block[logical_block]);
-#endif /* E2DEBUG */
- return INODE->i_block[logical_block];
- }
- /* else */
- logical_block -= EXT2_NDIR_BLOCKS;
- /* try the indirect block */
- if (logical_block < EXT2_ADDR_PER_BLOCK (SUPERBLOCK))
+ /* standard ext2 inode */
+ if (!(INODE->i_flags & EXT4_EXTENTS_FL))
{
- if (mapblock1 != 1
- && !ext2_rdfsb (INODE->i_block[EXT2_IND_BLOCK], DATABLOCK1))
- {
- errnum = ERR_FSYS_CORRUPT;
- return -1;
- }
- mapblock1 = 1;
- return ((__u32 *) DATABLOCK1)[logical_block];
- }
- /* else */
- logical_block -= EXT2_ADDR_PER_BLOCK (SUPERBLOCK);
- /* now try the double indirect block */
- if (logical_block < (1 << (EXT2_ADDR_PER_BLOCK_BITS (SUPERBLOCK) * 2)))
- {
- int bnum;
- if (mapblock1 != 2
- && !ext2_rdfsb (INODE->i_block[EXT2_DIND_BLOCK], DATABLOCK1))
- {
- errnum = ERR_FSYS_CORRUPT;
- return -1;
- }
- mapblock1 = 2;
- if ((bnum = (((__u32 *) DATABLOCK1)
- [logical_block >> EXT2_ADDR_PER_BLOCK_BITS (SUPERBLOCK)]))
- != mapblock2
- && !ext2_rdfsb (bnum, DATABLOCK2))
- {
- errnum = ERR_FSYS_CORRUPT;
- return -1;
- }
- mapblock2 = bnum;
+ /* if it is directly pointed to by the inode, return that physical addr */
+ if (logical_block < EXT2_NDIR_BLOCKS)
+ {
+#ifdef E2DEBUG
+ printf ("returning %d\n", (unsigned char *) (INODE->i_block[logical_block]));
+ printf ("returning %d\n", INODE->i_block[logical_block]);
+#endif /* E2DEBUG */
+ return INODE->i_block[logical_block];
+ }
+ /* else */
+ logical_block -= EXT2_NDIR_BLOCKS;
+ /* try the indirect block */
+ if (logical_block < EXT2_ADDR_PER_BLOCK (SUPERBLOCK))
+ {
+ if (mapblock1 != 1
+ && !ext2_rdfsb (INODE->i_block[EXT2_IND_BLOCK], DATABLOCK1))
+ {
+ errnum = ERR_FSYS_CORRUPT;
+ return -1;
+ }
+ mapblock1 = 1;
+ return ((__u32 *) DATABLOCK1)[logical_block];
+ }
+ /* else */
+ logical_block -= EXT2_ADDR_PER_BLOCK (SUPERBLOCK);
+ /* now try the double indirect block */
+ if (logical_block < (1 << (EXT2_ADDR_PER_BLOCK_BITS (SUPERBLOCK) * 2)))
+ {
+ int bnum;
+ if (mapblock1 != 2
+ && !ext2_rdfsb (INODE->i_block[EXT2_DIND_BLOCK], DATABLOCK1))
+ {
+ errnum = ERR_FSYS_CORRUPT;
+ return -1;
+ }
+ mapblock1 = 2;
+ if ((bnum = (((__u32 *) DATABLOCK1)
+ [logical_block >> EXT2_ADDR_PER_BLOCK_BITS (SUPERBLOCK)]))
+ != mapblock2
+ && !ext2_rdfsb (bnum, DATABLOCK2))
+ {
+ errnum = ERR_FSYS_CORRUPT;
+ return -1;
+ }
+ mapblock2 = bnum;
+ return ((__u32 *) DATABLOCK2)
+ [logical_block & (EXT2_ADDR_PER_BLOCK (SUPERBLOCK) - 1)];
+ }
+ /* else */
+ mapblock2 = -1;
+ logical_block -= (1 << (EXT2_ADDR_PER_BLOCK_BITS (SUPERBLOCK) * 2));
+ if (mapblock1 != 3
+ && !ext2_rdfsb (INODE->i_block[EXT2_TIND_BLOCK], DATABLOCK1))
+ {
+ errnum = ERR_FSYS_CORRUPT;
+ return -1;
+ }
+ mapblock1 = 3;
+ if (!ext2_rdfsb (((__u32 *) DATABLOCK1)
+ [logical_block >> (EXT2_ADDR_PER_BLOCK_BITS (SUPERBLOCK)
+ * 2)],
+ DATABLOCK2))
+ {
+ errnum = ERR_FSYS_CORRUPT;
+ return -1;
+ }
+ if (!ext2_rdfsb (((__u32 *) DATABLOCK2)
+ [(logical_block >> EXT2_ADDR_PER_BLOCK_BITS (SUPERBLOCK))
+ & (EXT2_ADDR_PER_BLOCK (SUPERBLOCK) - 1)],
+ DATABLOCK2))
+ {
+ errnum = ERR_FSYS_CORRUPT;
+ return -1;
+ }
return ((__u32 *) DATABLOCK2)
- [logical_block & (EXT2_ADDR_PER_BLOCK (SUPERBLOCK) - 1)];
- }
- /* else */
- mapblock2 = -1;
- logical_block -= (1 << (EXT2_ADDR_PER_BLOCK_BITS (SUPERBLOCK) * 2));
- if (mapblock1 != 3
- && !ext2_rdfsb (INODE->i_block[EXT2_TIND_BLOCK], DATABLOCK1))
- {
- errnum = ERR_FSYS_CORRUPT;
- return -1;
+ [logical_block & (EXT2_ADDR_PER_BLOCK (SUPERBLOCK) - 1)];
}
- mapblock1 = 3;
- if (!ext2_rdfsb (((__u32 *) DATABLOCK1)
- [logical_block >> (EXT2_ADDR_PER_BLOCK_BITS (SUPERBLOCK)
- * 2)],
- DATABLOCK2))
- {
- errnum = ERR_FSYS_CORRUPT;
- return -1;
- }
- if (!ext2_rdfsb (((__u32 *) DATABLOCK2)
- [(logical_block >> EXT2_ADDR_PER_BLOCK_BITS (SUPERBLOCK))
- & (EXT2_ADDR_PER_BLOCK (SUPERBLOCK) - 1)],
- DATABLOCK2))
+ /* inode is in extents format */
+ else
{
+ int i;
+ struct ext4_extent_header *extent_hdr = ext4_recurse_extent_index((struct ext4_extent_header *) INODE->i_block, logical_block);
+ struct ext4_extent *extent = (struct ext4_extent *) (extent_hdr + 1);
+ if ( extent_hdr == NULL || extent_hdr->eh_magic != EXT4_EXT_MAGIC)
+ {
+ errnum = ERR_FSYS_CORRUPT;
+ return -1;
+ }
+ for (i = 0; i<extent_hdr->eh_entries; i++)
+ {
+ if (extent[i].ee_block <= logical_block && logical_block < extent[i].ee_block + extent[i].ee_len && !(extent[i].ee_len>>15))
+ return (logical_block - extent[i].ee_block + extent[i].ee_start);
+ }
+ /* We should not arrive here */
errnum = ERR_FSYS_CORRUPT;
return -1;
}
- return ((__u32 *) DATABLOCK2)
- [logical_block & (EXT2_ADDR_PER_BLOCK (SUPERBLOCK) - 1)];
}
/* preconditions: all preconds of ext2fs_block_map */

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@ -1,18 +0,0 @@
diff -ru grub-0.97.orig/util/grub-install.in grub-0.97/util/grub-install.in
--- grub-0.97.orig/util/grub-install.in 2004-07-25 03:57:31.000000000 +0900
+++ grub-0.97/util/grub-install.in 2017-05-11 18:46:29.772993526 +0900
@@ -96,12 +96,12 @@
# Break the device name into the disk part and the partition part.
case "$host_os" in
linux*)
- tmp_disk=`echo "$1" | sed -e 's%\([sh]d[a-z]\)[0-9]*$%\1%' \
+ tmp_disk=`echo "$1" | sed -e 's%\([shv]d[a-z]\)[0-9]*$%\1%' \
-e 's%\(d[0-9]*\)p[0-9]*$%\1%' \
-e 's%\(fd[0-9]*\)$%\1%' \
-e 's%/part[0-9]*$%/disc%' \
-e 's%\(c[0-7]d[0-9]*\).*$%\1%'`
- tmp_part=`echo "$1" | sed -e 's%.*/[sh]d[a-z]\([0-9]*\)$%\1%' \
+ tmp_part=`echo "$1" | sed -e 's%.*/[shv]d[a-z]\([0-9]*\)$%\1%' \
-e 's%.*d[0-9]*p%%' \
-e 's%.*/fd[0-9]*$%%' \
-e 's%.*/floppy/[0-9]*$%%' \

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@ -1,59 +0,0 @@
### Global settings
## CRUX splash image
splashimage (hd0,0)/boot/grub/crux03.xpm.gz
## define special fore-/background colors for splash screen image
foreground = FFFFFF
background = AAAAAA
## shaded text
#shade 1
## time to wait for user interaction
timeout 5
## default boot kernel
default 0
### GRUB Devices: (see /boot/grub/device.map)
##
## Linux Grub
## ======================
## /dev/sda (hd0)
## /dev/sda1 (hd0,0)
## /dev/sdb (hd1)
## /dev/sdb1 (hd1,0)
## /dev/fd0 (fd0)
## Default menu entries
title CRUX
kernel (hd0,0)/boot/vmlinuz root=/dev/sda1
title CRUX
kernel (hd0,0)/boot/vmlinuz.old root=/dev/sda1
### Special cases
## Boot special bootimage
#title Memtest
#kernel (hd0,0)/boot/memtest.bin
## Boot Microsoft Windows(TM)
#title Windows
#root (hd0,5)
#makeactive
#chainloader +1
## Boot from Floppy
#title floppy
#root (fd0)
#chainloader +1
## Boot with different /boot partition
## / = /dev/sdb2 = (hd1,1)
## /boot = /dev/sdb1 = (hd1,0)
##
#title CRUX GNU/Linux drive 2
#kernel (hd1,0)/vmlinuz root=/dev/sdb2