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#1 2011-08-07 23:10:02

belbo
Member
From: Sydney, Australia
Registered: 2011-02-25
Posts: 51

[Solved] Can't boot into Arch after deleting some partitons

About 6 months ago I installed Arch on a machine that used to run Ubuntu. Had some trouble at the time getting to boot into Arch but somehow managed. Now eventually decided to delete the old Ubuntu partitons to free up some space using gparted. Arch partition number changed from sda12 to sda6.

On rebooting after deleting ubuntu partitions with gparted, I got an ubuntu splash screen and a whole lot of ubuntu boot options. Somehow these were all contained in my Arch's /boot/grub/menu.lst. Arch is all on one partition and no separate boot partition (which I had with Ubuntu - maybe I haven't deleted that and this is the problem?). Will need to check that out.

I can chroot into Arch and did the following -

grub> find /boot/grub/stage1
 (hd0,5)

grub> root (hd0,5)
 Filesystem type is ext2fs, partition type 0x83

grub> setup (hd0)
 Checking if "/boot/grub/stage1" exists... yes
 Checking if "/boot/grub/stage2" exists... yes
 Checking if "/boot/grub/e2fs_stage1_5" exists... yes
 Running "embed /boot/grub/e2fs_stage1_5 (hd0)"...  16 sectors are embedded.
succeeded
 Running "install /boot/grub/stage1 (hd0) (hd0)1+16 p (hd0,5)/boot/grub/stage2 /boot/grub/menu.lst"... succeed
ed
Done.

grub>

The Arch /boot/grub/menu.lst had a whole lot of ubuntu stuff in it but I edited to the following -

# 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


## default grub root device
## e.g. groot=(hd0,0)
# groot=(hd0,3)

title Arch uuid
#root (hd0,5)
uuid d15cf4f9-18ca-4ec5-95bc-db0f6f264736
kernel /boot/vmlinuz26 root=/dev/sda6 ro vga=775
intrd /boot/kernel26.img

title Arch hd
root (hd0,5)
kernel /boot/vmlinuz26 root=/dev/sda6
intrd /boot/kernel26.img

I have a bootinfo script which gives the following (from the chroot environment) -

                Boot Info Script 0.55    dated February 15th, 2010                    

============================= Boot Info Summary: ==============================

 => Grub 0.97 is installed in the MBR of /dev/sda and looks on the same drive 
    in partition #6 for /boot/grub/stage2 and /boot/grub/menu.lst.
 => No boot loader is installed in the MBR of /dev/sdb

sda1: _________________________________________________________________________

    File system:       swap
    Boot sector type:  -
    Boot sector info:  

sda2: _________________________________________________________________________

    File system:       Extended Partition
    Boot sector type:  -
    Boot sector info:  

sda5: _________________________________________________________________________

    File system:       ext3
    Boot sector type:  -
    Boot sector info:  
    Mounting failed:
mount: /dev/sda5 already mounted or sda5 busy

sda6: _________________________________________________________________________

    File system:       ext3
    Boot sector type:  -
    Boot sector info:  
    Mounting failed:
mount: /dev/sda5 already mounted or sda5 busy
mount: /dev/sda6 already mounted or sda6 busy

sda7: _________________________________________________________________________

    File system:       ext3
    Boot sector type:  -
    Boot sector info:  
    Operating System:  
    Boot files/dirs:   

sda3: _________________________________________________________________________

    File system:       ext3
    Boot sector type:  -
    Boot sector info:  
    Operating System:  Ubuntu 10.04.1 LTS
    Boot files/dirs:   /etc/fstab

sda4: _________________________________________________________________________

    File system:       ext3
    Boot sector type:  -
    Boot sector info:  
    Operating System:  
    Boot files/dirs:   /grub/menu.lst /grub/grub.cfg /grub/core.img

sdb1: _________________________________________________________________________

    File system:       xfs
    Boot sector type:  -
    Boot sector info:  
    Operating System:  
    Boot files/dirs:   

=========================== Drive/Partition Info: =============================

Drive: sda ___________________ _____________________________________________________

Disk /dev/sda: 750.2 GB, 750155292160 bytes
255 heads, 63 sectors/track, 91201 cylinders, total 1465147055 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes

Partition  Boot         Start           End          Size  Id System

/dev/sda1             417,690     6,554,519     6,136,830  82 Linux swap / Solaris
/dev/sda2          25,414,954 1,465,144,064 1,439,729,111   5 Extended
/dev/sda5          25,414,956 1,360,287,809 1,334,872,854  83 Linux
/dev/sda6       1,360,287,873 1,423,198,349    62,910,477  83 Linux
/dev/sda7       1,423,198,413 1,465,144,064    41,945,652  83 Linux
/dev/sda3           6,554,520    25,414,829    18,860,310  83 Linux
/dev/sda4    *             63       417,689       417,627  83 Linux


Drive: sdb ___________________ _____________________________________________________

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes

Partition  Boot         Start           End          Size  Id System

/dev/sdb1               2,048 1,953,523,711 1,953,521,664  83 Linux


blkid -c /dev/null: ____________________________________________________________

Device           UUID                                   TYPE       LABEL                         

/dev/loop0                                              squashfs                                 
/dev/sda1        2a95d85a-45fe-4584-88dd-0ee20e651ec5   swap                                     
/dev/sda2: PTTYPE="dos" PART_ENTRY_SCHEME="dos" PART_ENTRY_TYPE="0x5" PART_ENTRY_NUMBER="2" 
/dev/sda3        32495e1a-227c-4d23-9f63-b1319def0dd9   ext3                                     
/dev/sda4        d6dc69b0-967d-4886-b62d-8c0d6be06b41   ext3                                     
/dev/sda5        37971286-b8d3-4a1b-9f94-4008288fed6d   ext3       data                          
/dev/sda6        d15cf4f9-18ca-4ec5-95bc-db0f6f264736   ext3       30GB-02                       
/dev/sda7        eb736131-b558-4404-9b83-7f1e6d9e76ae   ext3       var                           
/dev/sda: PTTYPE="dos" 
/dev/sdb1        0e83045d-a0bd-4d36-b61d-bdb905130dc2   xfs        1TB-04                        
/dev/sdb: PTTYPE="dos" 

============================ "mount | grep ^/dev  output: ===========================

Device           Mount_Point              Type       Options

/dev/sda12       /                        ext3       (rw,commit=0)


=============================== sda3/etc/fstab: ===============================

# /etc/fstab: static file system information.
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0

# /dev/sda1 = swap
/dev/sda1                  none            swap    sw              0       0

# /dev/sda3 = root
#UUID=32495e1a-227c-4d23-9f63-b1319def0dd9
/dev/sda3     /               ext3    relatime,errors=remount-ro 0       1

# /dev/sda4 = boot
# UUID=d6dc69b0-967d-4886-b62d-8c0d6be06b41 
/dev/sda4    /boot           ext3    relatime        0       2

# /dev/sda5 = home
# UUID=670eee83-0a3e-429c-863f-b9ecced9f97e 
/dev/sda5    /home           ext3    relatime        0       2

#/dev/sda6
#UUID=37971286-b8d3-4a1b-9f94-4008288fed6d 
/dev/sda6    /home/ben/Data  ext3    defaults,relatime        0    0

# /dev/sda7
# UUID=fdb14ca4-d71d-489f-a00e-6e608770674c 
/dev/sda7    /var            ext3    relatime        0       2

# /dev/sda8
/dev/sda8    /opt            ext3    relatime        0       2

# /dev/sda10 - Arch
/dev/sda10    /mnt/arch    ext3    relatime        0       2

# Not sure what this is doing here
# Have commented it out - May be the reason why xbmc and mythtv were crashing on dvd insert and play
# /dev/hda                /media/cdrom0   udf,iso9660 user,noauto,exec,utf8 0       0

# /dev/sde1
# uuid appears to be 644406B3570C1846 -> ../../sde1
#/dev/sde1        /home/ben/Data/TVRecordings-1TB01  xfs    defaults,relatime    0    0

#1TB-01
UUID=76f3823a-81dc-45c9-a0b7-2bc6c3beb2f8 /media/1TB-01 xfs noatime,nodiratime,allocsize=512m    0    0 #remove
d defaults, relatime

# 1TB-02
UUID=59cbf7a1-7008-40d0-96ed-c6f231823d4f /media/1TB-02 xfs noatime,nodiratime,allocsize=512m    0    0 #remove
d defaults, relatime

# 1TB-03
UUID=0e936800-3c53-4b87-abc8-19be0ffca7f9 /media/1TB-03 xfs noatime,nodiratime,allocsize=512m      0    0 #remove
d defaults, relatime
# 750GB-02 ext3 Partition
# UUID giving problems, trying with dev 
# UUID=c23b9c9a-66fc-4256-9211-73156c1ac64a /media/750GB-02_ext3    ext3     defaults,relatime    0    0
/dev/sde2        /media/750GB-02_ext3    ext3     defaults,relatime    0    0




============================= sda4/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=32495e1a-227c-4d23-9f63-b1319def0dd9 ro

## default grub root device
## e.g. groot=(hd0,0)
# groot=(hd0,3)

## 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 10.04.1 LTS, kernel 2.6.32-26-generic
root        (hd0,3)
kernel        /vmlinuz-2.6.32-26-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash
initrd        /initrd.img-2.6.32-26-generic
quiet

title        Ubuntu 10.04.1 LTS, kernel 2.6.32-26-generic (recovery mode)
root        (hd0,3)
kernel        /vmlinuz-2.6.32-26-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro single
initrd        /initrd.img-2.6.32-26-generic

title        Ubuntu 10.04.1 LTS, kernel 2.6.32-24-generic
root        (hd0,3)
kernel        /vmlinuz-2.6.32-24-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash
initrd        /initrd.img-2.6.32-24-generic
quiet

title        Ubuntu 10.04.1 LTS, kernel 2.6.32-24-generic (recovery mode)
root        (hd0,3)
kernel        /vmlinuz-2.6.32-24-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro single
initrd        /initrd.img-2.6.32-24-generic

title        Ubuntu 10.04.1 LTS, kernel 2.6.32-23-generic
root        (hd0,3)
kernel        /vmlinuz-2.6.32-23-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash
initrd        /initrd.img-2.6.32-23-generic
quiet

title        Ubuntu 10.04.1 LTS, kernel 2.6.32-23-generic (recovery mode)
root        (hd0,3)
kernel        /vmlinuz-2.6.32-23-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro single
initrd        /initrd.img-2.6.32-23-generic

title        Ubuntu 10.04.1 LTS, kernel 2.6.32-22-generic
root        (hd0,3)
kernel        /vmlinuz-2.6.32-22-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash
initrd        /initrd.img-2.6.32-22-generic
quiet

title        Ubuntu 10.04.1 LTS, kernel 2.6.32-22-generic (recovery mode)
root        (hd0,3)
kernel        /vmlinuz-2.6.32-22-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro single
initrd        /initrd.img-2.6.32-22-generic

title        Ubuntu 10.04.1 LTS, memtest86+
root        (hd0,3)
kernel        /memtest86+.bin
quiet

### END DEBIAN AUTOMAGIC KERNELS LIST

============================= sda4/grub/grub.cfg: =============================

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by /usr/sbin/grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
  load_env
fi
set default="0"
if [ ${prev_saved_entry} ]; then
  set saved_entry=${prev_saved_entry}
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z ${boot_once} ]; then
    saved_entry=${chosen}
     save_env saved_entry
  fi
}

function recordfail {
  set recordfail=1
  if [ -n ${have_grubenv} ]; then if [ -z ${boot_once} ]; then save_env recordfail; fi; fi
}
insmod ext2
set root='(hd0,3)'
search --no-floppy --fs-uuid --set 32495e1a-227c-4d23-9f63-b1319def0dd9
if loadfont /usr/share/grub/unicode.pf2 ; then
  set gfxmode=640x480
  insmod gfxterm
  insmod vbe
  if terminal_output gfxterm ; then true ; else
    # For backward compatibility with versions of terminal.mod that don't
    # understand terminal_output
    terminal gfxterm
  fi
fi
insmod ext2
set root='(hd0,4)'
search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
set locale_dir=($root)/grub/locale
set lang=en
insmod gettext
if [ ${recordfail} = 1 ]; then
  set timeout=-1
else
  set timeout=10
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Ubuntu, with Linux 2.6.32-26-generic' --class ubuntu --class gnu-linux --class gnu --class os {
    recordfail
    insmod ext2
    set root='(hd0,4)'
    search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
    linux    /vmlinuz-2.6.32-26-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro   quiet splash
    initrd    /initrd.img-2.6.32-26-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-26-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu -
-class os {
    recordfail
    insmod ext2
    set root='(hd0,4)'
    search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
    echo    'Loading Linux 2.6.32-26-generic ...'
    linux    /vmlinuz-2.6.32-26-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro single 
    echo    'Loading initial ramdisk ...'
    initrd    /initrd.img-2.6.32-26-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-24-generic' --class ubuntu --class gnu-linux --class gnu --class os {
    recordfail
    insmod ext2
    set root='(hd0,4)'
    search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
    linux    /vmlinuz-2.6.32-24-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro   quiet splash
    initrd    /initrd.img-2.6.32-24-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-24-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu -
-class os {
    recordfail
    insmod ext2
    set root='(hd0,4)'
    search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
    echo    'Loading Linux 2.6.32-24-generic ...'
    linux    /vmlinuz-2.6.32-24-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro single 
    echo    'Loading initial ramdisk ...'
    initrd    /initrd.img-2.6.32-24-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-23-generic' --class ubuntu --class gnu-linux --class gnu --class os {
    recordfail
    insmod ext2
    set root='(hd0,4)'
    search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
    linux    /vmlinuz-2.6.32-23-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro   quiet splash
    initrd    /initrd.img-2.6.32-23-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-23-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu -
-class os {
    recordfail
    insmod ext2
    set root='(hd0,4)'
    search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
    echo    'Loading Linux 2.6.32-23-generic ...'
    linux    /vmlinuz-2.6.32-23-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro single 
    echo    'Loading initial ramdisk ...'
    initrd    /initrd.img-2.6.32-23-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-22-generic' --class ubuntu --class gnu-linux --class gnu --class os {
    recordfail
    insmod ext2
    set root='(hd0,4)'
    search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
    linux    /vmlinuz-2.6.32-22-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro   quiet splash
    initrd    /initrd.img-2.6.32-22-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-22-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu -
-class os {
    recordfail
    insmod ext2
    set root='(hd0,4)'
    search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
    echo    'Loading Linux 2.6.32-22-generic ...'
    linux    /vmlinuz-2.6.32-22-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro single 
    echo    'Loading initial ramdisk ...'
    initrd    /initrd.img-2.6.32-22-generic
}
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
    insmod ext2
    set root='(hd0,4)'
    search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
    linux16    /memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
    insmod ext2
    set root='(hd0,4)'
    search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41
    linux16    /memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Arch Linux (on /dev/sda10)" {
    insmod ext2
    set root='(hd0,10)'
    search --no-floppy --fs-uuid --set 26851879-58d1-4d65-90b4-e0845fe1176c
    linux /boot/vmlinuz26 root=/dev/sda10 ro
    initrd /boot/kernel26.img
}
menuentry "Arch Linux Fallback (on /dev/sda10)" {
    insmod ext2
    set root='(hd0,10)'
    search --no-floppy --fs-uuid --set 26851879-58d1-4d65-90b4-e0845fe1176c
    linux /boot/vmlinuz26 root=/dev/sda10 ro
    initrd /boot/kernel26-fallback.img
}
#### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.

# From Arch grub menu.lst
# (0) Arch Linux
#title  Arch Linux  [/boot/vmlinuz26]
#root   (hd0,0)
#kernel /vmlinuz26 root=/dev/sda3 ro
#initrd /kernel26.img

#Note: With a separate boot partition, omit /boot from the path, (i.e. type set prefix=(hdX,Y)/grub and insmod 
(hdX,Y)/grub/linux.mod).

#This introduces the "linux" and "initrd" commands, which should be familiar (see #Configuration).

#An example, booting Arch Linux:

#set root=(hd0,5)
#linux /boot/vmlinuz26 root=/dev/sda5
#initrd /boot/kernel26.img
#boot



###menuentry "Arch1" {
    ###insmod ext2
    ###set root='(hd0,10)'
    #search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41 = FOR UBUNTU THIS IS THE BOOT 
PARTITION
    #linux /vmlinuz-2.6.32-26-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash = FOR 
UBUNTU THIS IS THE ROOT PARTITION
     #initrd /initrd.img-2.6.32-26-generic
    ###search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41 # UBUNTU'S BOOT PARTITION UU
ID
    ###linux /boot/vmlinuz-26 root=635d7d02-3f5b-4af6-9c74-16b2af8cc7fd ro quiet splash # ARCH'S ROOT UUID
    ###initrd /boot/kernel26.img
    # /dev/sda10 uuid = 635d7d02-3f5b-4af6-9c74-16b2af8cc7fd - obtain using ls -l /dev/disk/by-uuid/
###}

###menuentry "Arch2" {
        ###insmod ext2
        ###set root='(hd0,4)' #= TRYING UBUNTU'S BOOT
        #search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41 = FOR UBUNTU THIS IS THE BOOT 
PARTITION
        #linux /vmlinuz-2.6.32-26-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash = FOR 
UBUNTU THIS IS THE ROOT PARTITION
        #initrd /initrd.img-2.6.32-26-generic
        #search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41 # UBUNTU'S BOOT PARTITION UUID
        ###linux /boot/vmlinuz-26 root=/dev/sda10 ro quiet splash # TRYING ARCH'S ROOT DEVICE FORMAT
        ###initrd /boot/kernel26.img
        # /dev/sda10 uuid = 635d7d02-3f5b-4af6-9c74-16b2af8cc7fd - obtain using ls -l /dev/disk/by-uuid/
###}
###menuentry "Arch3" {
        ###insmod ext2
        ###set root='(hd0,10)' #= TRYING UBUNTU'S BOOT IN HD FORMAT
        #search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41 = FOR UBUNTU THIS IS THE BOOT 
PARTITION
        #linux /vmlinuz-2.6.32-26-generic root=UUID=32495e1a-227c-4d23-9f63-b1319def0dd9 ro quiet splash = FOR 
UBUNTU THIS IS THE ROOT PARTITION
        #initrd /initrd.img-2.6.32-26-generic
        #search --no-floppy --fs-uuid --set d6dc69b0-967d-4886-b62d-8c0d6be06b41 # UBUNTU'S BOOT PARTITION UUID
        ###linux /boot/vmlinuz-26 root=/dev/sda10 ro quiet splash # TRYING ARCH'S ROOT DEVICE FORMAT
        ###initrd /boot/kernel26.img
        # /dev/sda10 uuid = 635d7d02-3f5b-4af6-9c74-16b2af8cc7fd - obtain using ls -l /dev/disk/by-uuid/
###}



### END /etc/grub.d/40_custom ###

=================== sda4: Location of files loaded by Grub: ===================


    .0GB: grub/core.img
    .0GB: grub/grub.cfg
    .0GB: grub/menu.lst
    .0GB: grub/stage2
    .0GB: initrd.img-2.6.32-22-generic
    .0GB: initrd.img-2.6.32-23-generic
    .1GB: initrd.img-2.6.32-24-generic
    .1GB: initrd.img-2.6.32-26-generic
    .0GB: vmlinuz26
    .0GB: vmlinuz-2.6.32-22-generic
    .0GB: vmlinuz-2.6.32-23-generic
    .1GB: vmlinuz-2.6.32-24-generic
    .0GB: vmlinuz-2.6.32-26-generic
=============================== StdErr Messages: ===============================

  No volume groups found
mdadm: No arrays found in config file or automatically
[/quote]

Output of fdisk -l from chroot is -

[quote]Disk /dev/sda: 750.2 GB, 750155292160 bytes
255 heads, 63 sectors/track, 91201 cylinders, total 1465147055 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0000b084

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1          417690     6554519     3068415   82  Linux swap / Solaris
/dev/sda2        25414954  1465144064   719864555+   5  Extended
/dev/sda3         6554520    25414829     9430155   83  Linux
/dev/sda4   *          63      417689      208813+  83  Linux
/dev/sda5        25414956  1360287809   667436427   83  Linux
/dev/sda6      1360287873  1423198349    31455238+  83  Linux
/dev/sda7      1423198413  1465144064    20972826   83  Linux

Partition table entries are not in disk order

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00025bd3

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048  1953523711   976760832   83  Linux

I need to post this now and come back from a different machine to note the error messages I am now getting on boot. ...

Note that when I boot and press esc to get the menu I get the menu.lst I created (in the second quote) above in /dev/sda6, ie the one with the Arch hd and uuid entries - so grub is looking there and finding that menu.lst, but something goes wrong after that.

OK. Have now booted the machine and after pressing esc and selecting the uuid entry (the same thing happens with the hd entry) I get a whole lot of stuff, but what seems relevant is (typing it out) -

List of all partitions:
No filesystem could mount root, tried:
Kernel panic - not syncing: VS: Unable to mount root fs on unknown-block(0,0)
Pid: 1, comm: swapper Not tainted 2.6.39-Arch #1

If anyone can help I'd really appreciate it. This is my MythTV machine so the WAF is about to take a big dive!

If I could just install grub to the MBR as if this was a new installation of Arch that would be great.

I am really lost as to what is going on, which I'm sure is evident.

Thanks a lot

belbo

Last edited by belbo (2011-08-12 13:31:23)

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#2 2011-08-07 23:26:57

karol
Archivist
Registered: 2009-05-06
Posts: 25,440

Re: [Solved] Can't boot into Arch after deleting some partitons

You need to edit you post and use [ code ] tags https://bbs.archlinux.org/help.php#bbcode

like this

(if you hit 'quote' on my post you will see how I've done it)

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#3 2011-08-08 00:50:45

belbo
Member
From: Sydney, Australia
Registered: 2011-02-25
Posts: 51

Re: [Solved] Can't boot into Arch after deleting some partitons

Done. Thanks.

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#4 2011-08-08 01:05:44

karol
Archivist
Registered: 2009-05-06
Posts: 25,440

Re: [Solved] Can't boot into Arch after deleting some partitons

Have you done this: https://wiki.archlinux.org/index.php/Gp … tion_Order ?

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#5 2011-08-08 01:56:38

belbo
Member
From: Sydney, Australia
Registered: 2011-02-25
Posts: 51

Re: [Solved] Can't boot into Arch after deleting some partitons

Nope. Thanks. Will give that a go tonight hopefully.

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#6 2011-08-08 22:59:55

belbo
Member
From: Sydney, Australia
Registered: 2011-02-25
Posts: 51

Re: [Solved] Can't boot into Arch after deleting some partitons

Hi. Unfortunately that didn't help.

So next, based on this post https://wiki.archlinux.org/index.php/Ke … el_version I chrooted into Arch and (a) rolled back and (b) reinstalled my kernel but that didn't help either. I suspected it wouldn't because the kernel was working fine before I deleted the partitions in question.

[2011-08-08 23:32] ==> Image generation successful
[2011-08-08 23:32] upgraded kernel26 (2.6.39.3-1 -> 2.6.39.3-1)

I then did a pacman -Suy and the linux package has now replaced kernel26. ( See this wiki entry http://www.archlinux.org/news/changes-t … filenames/). I didn't change anything in menu.lst owing to this and it seems there is no need to. Unfortunately this hasn't helped either - still getting the kernel panic. 

Pacman.log relating to the new kernel package below -

[2011-08-09 00:22] Running 'pacman -Suy'
[2011-08-09 00:22] synchronizing package lists
[2011-08-09 00:23] starting full system upgrade
[2011-08-09 00:23] Running 'pacman -Suy'
[2011-08-09 00:23] synchronizing package lists
[2011-08-09 00:23] starting full system upgrade
[2011-08-09 00:26] removed python-mygpoclient (1.5-1)
[2011-08-09 00:26] removed kernel26 (2.6.39.3-1)
...
[2011-08-09 00:26] warning: /boot/grub/menu.lst installed as /boot/grub/menu.lst.pacnew
[2011-08-09 00:26] upgraded grub (0.97-17 -> 0.97-19)
[2011-08-09 00:26] upgraded icu (4.8-1 -> 4.8.1-1)
[2011-08-09 00:26] upgraded linux-firmware (20110512-2 -> 20110727-1)
[2011-08-09 00:26] >>> Updating module dependencies. Please wait ...
[2011-08-09 00:26] >>> Generating initial ramdisk, using mkinitcpio.  Please wait...
[2011-08-09 00:26] ==> Building image from preset: 'default'
[2011-08-09 00:26]   -> -k /boot/vmlinuz-linux -c /etc/mkinitcpio.conf -g /boot/initramfs-linux.img
[2011-08-09 00:26] ==> Starting build: 3.0-ARCH
[2011-08-09 00:26]   -> Parsing hook: [base]
[2011-08-09 00:26]   -> Parsing hook: [udev]
[2011-08-09 00:26]   -> Parsing hook: [autodetect]
[2011-08-09 00:26]   -> Parsing hook: [pata]
[2011-08-09 00:26]   -> Parsing hook: [scsi]
[2011-08-09 00:26]   -> Parsing hook: [sata]
[2011-08-09 00:26]   -> Parsing hook: [filesystems]
[2011-08-09 00:26]   -> Parsing hook: [usbinput]
[2011-08-09 00:26] ==> Generating module dependencies
[2011-08-09 00:26] ==> Creating gzip initcpio image: /boot/initramfs-linux.img
[2011-08-09 00:26] 7079 blocks
[2011-08-09 00:26] ==> Image generation successful
[2011-08-09 00:26] ==> Building image from preset: 'fallback'
[2011-08-09 00:26]   -> -k /boot/vmlinuz-linux -c /etc/mkinitcpio.conf -g /boot/initramfs-linux-fallback.img -S autodetect
[2011-08-09 00:26] ==> Starting build: 3.0-ARCH
[2011-08-09 00:26]   -> Parsing hook: [base]
[2011-08-09 00:26]   -> Parsing hook: [udev]
[2011-08-09 00:26]   -> Parsing hook: [pata]
[2011-08-09 00:26]   -> Parsing hook: [scsi]
[2011-08-09 00:26]   -> Parsing hook: [sata]
[2011-08-09 00:26]   -> Parsing hook: [filesystems]
[2011-08-09 00:26]   -> Parsing hook: [usbinput]
[2011-08-09 00:26] ==> Generating module dependencies
[2011-08-09 00:26] ==> Creating gzip initcpio image: /boot/initramfs-linux-fallback.img
[2011-08-09 00:26] 23360 blocks
[2011-08-09 00:26] ==> Image generation successful
[2011-08-09 00:26] installed linux (3.0.1-1)

I don't think I've mentioned that my old menu.lst seems to have disappeared and so must have been on one of the partitions that were deleted. I did have 2 Arch installations when I was setting things up months ago and that menu.lst may have been on the other partition but pointing to this partiton's kernel for booting. Presumably that's possible since this partiton is definitely the one I have been using for the last several months (confirmed by log and other files updated in the last few days etc). Even so, I suppose that probably wouldn't be relevant to this issue, since grub is finding the menu.lst on this partition when it boots so it is looking in the intended place now.

It seems I'm at a bit of a dead end. It seems these kernel panics are usually because there is something wrong with the kernel - which there wasn't with mine (and presumably the kernel in the new linux package is fine) or there is a typo in menu.lst (I can't see one and nobody has pointed one out yet) or menu.lst is pointing to the wrong partition (mine is pointing to the same partition and /boot directory that is found by grub - which is where my boot image is located - so it seems to be correct). I have nevertheless tried editing the menu.lst entry when booting to boot from different partitions but so far that hasn't worked either.

If anybody has other ideas I'd really appreciate it.

If not, some suggestions on re-installing would also be appreciated. I have a recent tar archive of the partition, but presumably reinstalling that wouldn't be of much use since it would just put back what is currently there. I guess that I need to format the partition, create a separate boot partition, do a fresh install of Arch into the formatted partition (and with boot in the new boot partition). And then restore my tar backup (excluding the boot directory) into the formatted partition?

Any assistance greatly appreciated.

Thanks

belbo

Last edited by belbo (2011-08-08 23:17:49)

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#7 2011-08-09 05:07:31

Jristz
Member
From: America/Santiago
Registered: 2011-06-11
Posts: 1,022

Re: [Solved] Can't boot into Arch after deleting some partitons

Why not reinstal Grub?
you know trow chrooting into you sistem and reintaling grub (and make the process completly manual)
if you use grub2

# pacman -S grub2-bios #for bios sistem
# grub-intall --no-floppy --recheck /dev/sdx # the x is the leter of you hard disk
# grub-mkconfig -o /boot/grub/grub.cfg # for the resolution and oter tweak refering to /etc/default/grub (all modification need make this line again)

if you use Grub1 I don know how

Well, I suppose that this is somekind of signature, no?

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#8 2011-08-09 08:03:39

belbo
Member
From: Sydney, Australia
Registered: 2011-02-25
Posts: 51

Re: [Solved] Can't boot into Arch after deleting some partitons

Thanks for the suggestion. Not sure if I'm game for that. Would prefer to stay with Grub, being the current standard - and found Grub2 quite tricky with Ubuntu. I have however tried reinstalling Grub and reinstalling the stage1 files as per this link, but that didn't solve the problem -

https://wiki.archlinux.org/index.php/Gr … stallation

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#9 2011-08-12 13:33:08

belbo
Member
From: Sydney, Australia
Registered: 2011-02-25
Posts: 51

Re: [Solved] Can't boot into Arch after deleting some partitons

I found the error. In my menu.lst I had 'intrd' instead of 'initrd'. Damn !

Many thanks for the help and sincere apologies for wasting anybody's time.

belbo

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