MartinHansell
February 10th, 2009, 06:16 AM
Hi,
I have tinkered (a lot!) with getting my Linux box set up. And the result is that I now have 4 disks each with a different boot loader on them.
I am not finished tinkering. I want to reinstall Intrepid with lvm2, but first I want to clean the mbr's to avoid any conflicts when I install (which I have experienced already).
How do I go about getting rid of all unnecessary data/info in the mbr's for each disk which is not being used to boot up?
Thanks
Martin
Details are below... (ignore the sde drive, it's just a usb that is not normally there).
============================= Boot Info Summary: ==============================
=> Grub0.97 is installed in the MBR of /dev/sda and looks on boot drive #3 in
partition #1 for /boot/grub/stage2 and /boot/grub/menu.lst.
=> Windows is installed in the MBR of /dev/sdb
=> Lilo is installed in the MBR of /dev/sdc
=> Grub is installed in the MBR of /dev/sdd and looks on boot drive #-127 in
partition #1 for /.
=> No boot loader is installed in the MBR of /dev/sde
sda1: __________________________________________________ _______________________
File system: ntfs
Boot sector type: Windows XP
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files/dirs:
sdc1: __________________________________________________ _______________________
File system: ext3
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 8.10
Boot files/dirs: /boot/grub/menu.lst /etc/fstab
sdc2: __________________________________________________ _______________________
File system: Extended Partition
Boot sector type: -
Boot sector info:
sdc5: __________________________________________________ _______________________
File system: swap
Boot sector type: -
Boot sector info:
sde1: __________________________________________________ _______________________
File system: vfat
Boot sector type: Fat16
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files/dirs:
=========================== Drive/Partition Info: =============================
Drive sda: __________________________________________________ ___________________
Disk /dev/sda: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0xc2ce541e
Partition Boot Start End Size Id System
/dev/sda1 * 63 488,392,064 488,392,002 7 HPFS/NTFS
Drive sdb: __________________________________________________ ___________________
Disk /dev/sdb: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x0006cbbf
Partition Boot Start End Size Id System
Drive sdc: __________________________________________________ ___________________
Disk /dev/sdc: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders, total 156301488 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x00bd00bd
Partition Boot Start End Size Id System
/dev/sdc1 63 149,838,254 149,838,192 83 Linux
/dev/sdc2 149,838,255 156,296,384 6,458,130 5 Extended
/dev/sdc5 149,838,318 156,296,384 6,458,067 82 Linux swap / Solaris
Drive sdd: __________________________________________________ ___________________
Disk /dev/sdd: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x02830282
Partition Boot Start End Size Id System
Drive sde: __________________________________________________ ___________________
Disk /dev/sde: 262 MB, 262144000 bytes
16 heads, 32 sectors/track, 1000 cylinders, total 512000 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0xc1ed6bcc
Partition Boot Start End Size Id System
/dev/sde1 * 32 511,487 511,456 6 FAT16
blkid -c /dev/null: __________________________________________________ __________
/dev/sda1: UUID="08F06AA7F06A9B28" LABEL="Media" TYPE="ntfs"
/dev/sdc1: UUID="9c11cf12-98e9-4e4b-a130-97775e812800" TYPE="ext3"
/dev/sdc5: UUID="290f7016-646f-45fe-9641-c6948ad1e151" TYPE="swap"
/dev/sde1: SEC_TYPE="msdos" UUID="30CF-3A8E" TYPE="vfat"
=============================== "mount" output: ===============================
/dev/sdc1 on / type ext3 (rw,relatime,errors=remount-ro)
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
/proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
varrun on /var/run type tmpfs (rw,nosuid,mode=0755)
varlock on /var/lock type tmpfs (rw,noexec,nosuid,nodev,mode=1777)
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
lrm on /lib/modules/2.6.27-7-generic/volatile type tmpfs (rw,mode=755)
securityfs on /sys/kernel/security type securityfs (rw)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
gvfs-fuse-daemon on /home/mangoking/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=mangoking)
/dev/sde1 on /media/disk type vfat (rw,nosuid,nodev,uhelper=hal,shortname=mixed,uid=1 000,utf8,umask=077,flush)
/dev/sda1 on /media/Media type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096)
=========================== sdc1/boot/grub/menu.lst: ===========================
# menu.lst - See: grub(8), info grub, update-grub(8)
# grub-install(8), grub-floppy(8),
# grub-md5-crypt, /usr/share/doc/grub
# and /usr/share/doc/grub-doc/.
## default num
# Set the default entry to the entry number NUM. Numbering starts from 0, and
# the entry number 0 is the default if the command is not used.
#
# You can specify 'saved' instead of a number. In this case, the default entry
# is the entry saved with the command 'savedefault'.
# WARNING: If you are using dmraid do not use 'savedefault' or your
# array will desync and will not let you boot your system.
default 0
## timeout sec
# Set a timeout, in SEC seconds, before automatically booting the default entry
# (normally the first entry defined).
timeout 3
## hiddenmenu
# Hides the menu by default (press ESC to see the menu)
hiddenmenu
# Pretty colours
#color cyan/blue white/blue
## password ['--md5'] passwd
# If used in the first section of a menu file, disable all interactive editing
# control (menu entry editor and command-line) and entries protected by the
# command 'lock'
# e.g. password topsecret
# password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
# password topsecret
#
# examples
#
# title Windows 95/98/NT/2000
# root (hd0,0)
# makeactive
# chainloader +1
#
# title Linux
# root (hd0,1)
# kernel /vmlinuz root=/dev/hda2 ro
#
#
# Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST
### BEGIN AUTOMAGIC KERNELS LIST
## lines between the AUTOMAGIC KERNELS LIST markers will be modified
## by the debian update-grub script except for the default options below
## DO NOT UNCOMMENT THEM, Just edit them to your needs
## ## Start Default Options ##
## default kernel options
## default kernel options for automagic boot options
## If you want special options for specific kernels use kopt_x_y_z
## where x.y.z is kernel version. Minor versions can be omitted.
## e.g. kopt=root=/dev/hda1 ro
## kopt_2_6_8=root=/dev/hdc1 ro
## kopt_2_6_8_2_686=root=/dev/hdc2 ro
# kopt=root=UUID=9c11cf12-98e9-4e4b-a130-97775e812800 ro
## default grub root device
## e.g. groot=(hd0,0)
# groot=9c11cf12-98e9-4e4b-a130-97775e812800
## should update-grub create alternative automagic boot options
## e.g. alternative=true
## alternative=false
# alternative=true
## should update-grub lock alternative automagic boot options
## e.g. lockalternative=true
## lockalternative=false
# lockalternative=false
## additional options to use with the default boot option, but not with the
## alternatives
## e.g. defoptions=vga=791 resume=/dev/hda5
# defoptions=quiet splash
## should update-grub lock old automagic boot options
## e.g. lockold=false
## lockold=true
# lockold=false
## Xen hypervisor options to use with the default Xen boot option
# xenhopt=
## Xen Linux kernel options to use with the default Xen boot option
# xenkopt=console=tty0
## altoption boot targets option
## multiple altoptions lines are allowed
## e.g. altoptions=(extra menu suffix) extra boot options
## altoptions=(recovery) single
# altoptions=(recovery mode) single
## controls how many kernels should be put into the menu.lst
## only counts the first occurence of a kernel, not the
## alternative kernel options
## e.g. howmany=all
## howmany=7
# howmany=all
## should update-grub create memtest86 boot option
## e.g. memtest86=true
## memtest86=false
# memtest86=true
## should update-grub adjust the value of the default booted system
## can be true or false
# updatedefaultentry=false
## should update-grub add savedefault to the default options
## can be true or false
# savedefault=false
## ## End Default Options ##
title Ubuntu 8.10, kernel 2.6.27-7-generic
uuid 9c11cf12-98e9-4e4b-a130-97775e812800
kernel /boot/vmlinuz-2.6.27-7-generic root=UUID=9c11cf12-98e9-4e4b-a130-97775e812800 ro quiet splash
initrd /boot/initrd.img-2.6.27-7-generic
quiet
title Ubuntu 8.10, kernel 2.6.27-7-generic (recovery mode)
uuid 9c11cf12-98e9-4e4b-a130-97775e812800
kernel /boot/vmlinuz-2.6.27-7-generic root=UUID=9c11cf12-98e9-4e4b-a130-97775e812800 ro single
initrd /boot/initrd.img-2.6.27-7-generic
title Ubuntu 8.10, memtest86+
uuid 9c11cf12-98e9-4e4b-a130-97775e812800
kernel /boot/memtest86+.bin
quiet
### END DEBIAN AUTOMAGIC KERNELS LIST
=============================== sdc1/etc/fstab: ===============================
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# /dev/sdc1
UUID=9c11cf12-98e9-4e4b-a130-97775e812800 / ext3 relatime,errors=remount-ro 0 1
# /dev/sdc5
UUID=290f7016-646f-45fe-9641-c6948ad1e151 none swap sw 0 0
/dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0
=================== sdc1: Location of files loaded by Grub: ===================
41.5GB: boot/grub/menu.lst
41.5GB: boot/grub/stage2
41.5GB: boot/initrd.img-2.6.27-7-generic
41.5GB: boot/vmlinuz-2.6.27-7-generic
41.5GB: initrd.img
41.5GB: vmlinuz
I have tinkered (a lot!) with getting my Linux box set up. And the result is that I now have 4 disks each with a different boot loader on them.
I am not finished tinkering. I want to reinstall Intrepid with lvm2, but first I want to clean the mbr's to avoid any conflicts when I install (which I have experienced already).
How do I go about getting rid of all unnecessary data/info in the mbr's for each disk which is not being used to boot up?
Thanks
Martin
Details are below... (ignore the sde drive, it's just a usb that is not normally there).
============================= Boot Info Summary: ==============================
=> Grub0.97 is installed in the MBR of /dev/sda and looks on boot drive #3 in
partition #1 for /boot/grub/stage2 and /boot/grub/menu.lst.
=> Windows is installed in the MBR of /dev/sdb
=> Lilo is installed in the MBR of /dev/sdc
=> Grub is installed in the MBR of /dev/sdd and looks on boot drive #-127 in
partition #1 for /.
=> No boot loader is installed in the MBR of /dev/sde
sda1: __________________________________________________ _______________________
File system: ntfs
Boot sector type: Windows XP
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files/dirs:
sdc1: __________________________________________________ _______________________
File system: ext3
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 8.10
Boot files/dirs: /boot/grub/menu.lst /etc/fstab
sdc2: __________________________________________________ _______________________
File system: Extended Partition
Boot sector type: -
Boot sector info:
sdc5: __________________________________________________ _______________________
File system: swap
Boot sector type: -
Boot sector info:
sde1: __________________________________________________ _______________________
File system: vfat
Boot sector type: Fat16
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files/dirs:
=========================== Drive/Partition Info: =============================
Drive sda: __________________________________________________ ___________________
Disk /dev/sda: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0xc2ce541e
Partition Boot Start End Size Id System
/dev/sda1 * 63 488,392,064 488,392,002 7 HPFS/NTFS
Drive sdb: __________________________________________________ ___________________
Disk /dev/sdb: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x0006cbbf
Partition Boot Start End Size Id System
Drive sdc: __________________________________________________ ___________________
Disk /dev/sdc: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders, total 156301488 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x00bd00bd
Partition Boot Start End Size Id System
/dev/sdc1 63 149,838,254 149,838,192 83 Linux
/dev/sdc2 149,838,255 156,296,384 6,458,130 5 Extended
/dev/sdc5 149,838,318 156,296,384 6,458,067 82 Linux swap / Solaris
Drive sdd: __________________________________________________ ___________________
Disk /dev/sdd: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x02830282
Partition Boot Start End Size Id System
Drive sde: __________________________________________________ ___________________
Disk /dev/sde: 262 MB, 262144000 bytes
16 heads, 32 sectors/track, 1000 cylinders, total 512000 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0xc1ed6bcc
Partition Boot Start End Size Id System
/dev/sde1 * 32 511,487 511,456 6 FAT16
blkid -c /dev/null: __________________________________________________ __________
/dev/sda1: UUID="08F06AA7F06A9B28" LABEL="Media" TYPE="ntfs"
/dev/sdc1: UUID="9c11cf12-98e9-4e4b-a130-97775e812800" TYPE="ext3"
/dev/sdc5: UUID="290f7016-646f-45fe-9641-c6948ad1e151" TYPE="swap"
/dev/sde1: SEC_TYPE="msdos" UUID="30CF-3A8E" TYPE="vfat"
=============================== "mount" output: ===============================
/dev/sdc1 on / type ext3 (rw,relatime,errors=remount-ro)
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
/proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
varrun on /var/run type tmpfs (rw,nosuid,mode=0755)
varlock on /var/lock type tmpfs (rw,noexec,nosuid,nodev,mode=1777)
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
lrm on /lib/modules/2.6.27-7-generic/volatile type tmpfs (rw,mode=755)
securityfs on /sys/kernel/security type securityfs (rw)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
gvfs-fuse-daemon on /home/mangoking/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=mangoking)
/dev/sde1 on /media/disk type vfat (rw,nosuid,nodev,uhelper=hal,shortname=mixed,uid=1 000,utf8,umask=077,flush)
/dev/sda1 on /media/Media type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096)
=========================== sdc1/boot/grub/menu.lst: ===========================
# menu.lst - See: grub(8), info grub, update-grub(8)
# grub-install(8), grub-floppy(8),
# grub-md5-crypt, /usr/share/doc/grub
# and /usr/share/doc/grub-doc/.
## default num
# Set the default entry to the entry number NUM. Numbering starts from 0, and
# the entry number 0 is the default if the command is not used.
#
# You can specify 'saved' instead of a number. In this case, the default entry
# is the entry saved with the command 'savedefault'.
# WARNING: If you are using dmraid do not use 'savedefault' or your
# array will desync and will not let you boot your system.
default 0
## timeout sec
# Set a timeout, in SEC seconds, before automatically booting the default entry
# (normally the first entry defined).
timeout 3
## hiddenmenu
# Hides the menu by default (press ESC to see the menu)
hiddenmenu
# Pretty colours
#color cyan/blue white/blue
## password ['--md5'] passwd
# If used in the first section of a menu file, disable all interactive editing
# control (menu entry editor and command-line) and entries protected by the
# command 'lock'
# e.g. password topsecret
# password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
# password topsecret
#
# examples
#
# title Windows 95/98/NT/2000
# root (hd0,0)
# makeactive
# chainloader +1
#
# title Linux
# root (hd0,1)
# kernel /vmlinuz root=/dev/hda2 ro
#
#
# Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST
### BEGIN AUTOMAGIC KERNELS LIST
## lines between the AUTOMAGIC KERNELS LIST markers will be modified
## by the debian update-grub script except for the default options below
## DO NOT UNCOMMENT THEM, Just edit them to your needs
## ## Start Default Options ##
## default kernel options
## default kernel options for automagic boot options
## If you want special options for specific kernels use kopt_x_y_z
## where x.y.z is kernel version. Minor versions can be omitted.
## e.g. kopt=root=/dev/hda1 ro
## kopt_2_6_8=root=/dev/hdc1 ro
## kopt_2_6_8_2_686=root=/dev/hdc2 ro
# kopt=root=UUID=9c11cf12-98e9-4e4b-a130-97775e812800 ro
## default grub root device
## e.g. groot=(hd0,0)
# groot=9c11cf12-98e9-4e4b-a130-97775e812800
## should update-grub create alternative automagic boot options
## e.g. alternative=true
## alternative=false
# alternative=true
## should update-grub lock alternative automagic boot options
## e.g. lockalternative=true
## lockalternative=false
# lockalternative=false
## additional options to use with the default boot option, but not with the
## alternatives
## e.g. defoptions=vga=791 resume=/dev/hda5
# defoptions=quiet splash
## should update-grub lock old automagic boot options
## e.g. lockold=false
## lockold=true
# lockold=false
## Xen hypervisor options to use with the default Xen boot option
# xenhopt=
## Xen Linux kernel options to use with the default Xen boot option
# xenkopt=console=tty0
## altoption boot targets option
## multiple altoptions lines are allowed
## e.g. altoptions=(extra menu suffix) extra boot options
## altoptions=(recovery) single
# altoptions=(recovery mode) single
## controls how many kernels should be put into the menu.lst
## only counts the first occurence of a kernel, not the
## alternative kernel options
## e.g. howmany=all
## howmany=7
# howmany=all
## should update-grub create memtest86 boot option
## e.g. memtest86=true
## memtest86=false
# memtest86=true
## should update-grub adjust the value of the default booted system
## can be true or false
# updatedefaultentry=false
## should update-grub add savedefault to the default options
## can be true or false
# savedefault=false
## ## End Default Options ##
title Ubuntu 8.10, kernel 2.6.27-7-generic
uuid 9c11cf12-98e9-4e4b-a130-97775e812800
kernel /boot/vmlinuz-2.6.27-7-generic root=UUID=9c11cf12-98e9-4e4b-a130-97775e812800 ro quiet splash
initrd /boot/initrd.img-2.6.27-7-generic
quiet
title Ubuntu 8.10, kernel 2.6.27-7-generic (recovery mode)
uuid 9c11cf12-98e9-4e4b-a130-97775e812800
kernel /boot/vmlinuz-2.6.27-7-generic root=UUID=9c11cf12-98e9-4e4b-a130-97775e812800 ro single
initrd /boot/initrd.img-2.6.27-7-generic
title Ubuntu 8.10, memtest86+
uuid 9c11cf12-98e9-4e4b-a130-97775e812800
kernel /boot/memtest86+.bin
quiet
### END DEBIAN AUTOMAGIC KERNELS LIST
=============================== sdc1/etc/fstab: ===============================
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# /dev/sdc1
UUID=9c11cf12-98e9-4e4b-a130-97775e812800 / ext3 relatime,errors=remount-ro 0 1
# /dev/sdc5
UUID=290f7016-646f-45fe-9641-c6948ad1e151 none swap sw 0 0
/dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0
=================== sdc1: Location of files loaded by Grub: ===================
41.5GB: boot/grub/menu.lst
41.5GB: boot/grub/stage2
41.5GB: boot/initrd.img-2.6.27-7-generic
41.5GB: boot/vmlinuz-2.6.27-7-generic
41.5GB: initrd.img
41.5GB: vmlinuz