cant boot..(initramfs)

[neo1786]

Hey,
I am using a HP dv4,64bit laptop running vista and ubuntu dual boot. I installed ubuntu using wubi. My windows didnt shutdown properly and went into disk repair mode. It didnt repair anythng tho. At the boot up, after i select Ubuntu in grub 2, i get stuck at (initramfs)_ shell.

I looked online n tried this fix.
http://www.proposedsolution.com/solutions/ubuntu-booting-to-initramfs-prompt/comment-page-1/#comment-8279

nothing happens after mounting. wat should i do??
THIS IS THE O/P ON SCREEN:


Begin: Running /scripts/local-bottom...
Done.
Done.
Begin: Running /scripts/init-bottom...
mount: mounting /dev on /root/dev failed: No Such file or directory.
Done.
mount: mounting /sys on /root/sys failed: No Such file or directory.
mount: mounting /proc on /root/proc failed: No Such file or directory.
Target filesystem doesnt have /sbin/init
No init found. Try passing init= bootarg.

Busybox v1.13.3 (Ubuntu 1.1.13.3-10ubuntu11) built-in shell (ash)
(initramfs)_


Here is my boot info:

Boot Info Script 0.55 dated February 15th, 2010

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

=> Lilo is installed in the MBR of /dev/sda

sda1: __________________________________________________ _______________________

File system: ntfs
Boot sector type: Windows Vista/7
Boot sector info: No errors found in the Boot Parameter Block.
Operating System: Windows Vista
Boot files/dirs: /bootmgr /boot/bcd /Windows/System32/winload.exe
/wubildr.mbr /wubildr

sda2: __________________________________________________ _______________________

File system: ntfs
Boot sector type: Grub 2
Boot sector info: Grub 2 is installed in the boot sector of sda2 and
looks at sector 3591520 of the same hard drive for
core.img, but core.img can not be found at this
location. No errors found in the Boot Parameter Block.
Operating System:
Boot files/dirs:

sda3: __________________________________________________ _______________________

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

sda5: __________________________________________________ _______________________

File system: ntfs
Boot sector type: Windows Vista/7
Boot sector info: According to the info in the boot sector, sda5 starts
at sector 2048.
Operating System:
Boot files/dirs: /ubuntu/winboot/wubildr.mbr /ubuntu/winboot/wubildr
/ubuntu/disks/root.disk /ubuntu/disks/swap.disk

sda5/Wubi: __________________________________________________ _______________________

File system: ext4
Boot sector type: -
Boot sector info:
Mounting failed:
mount: wrong fs type, bad option, bad superblock on /dev/loop1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so


sda4: __________________________________________________ _______________________

File system: ntfs
Boot sector type: Grub 2
Boot sector info: Grub 2 is installed in the boot sector of sda4 and
looks at sector 3593216 of the same hard drive for
core.img, but core.img can not be found at this
location. No errors found in the Boot Parameter Block.
Operating System:
Boot files/dirs: /bootmgr

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

Drive: sda ___________________ __________________________________________________ ___

Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders, total 625142448 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 * 2,048 306,153,463 306,151,416 7 HPFS/NTFS
/dev/sda2 306,153,472 533,413,879 227,260,408 7 HPFS/NTFS
/dev/sda3 533,413,888 594,855,935 61,442,048 f W95 Ext d (LBA)
/dev/sda5 533,415,936 594,855,935 61,440,000 7 HPFS/NTFS
/dev/sda4 594,855,936 625,135,615 30,279,680 7 HPFS/NTFS


blkid -c /dev/null: __________________________________________________ __________

Device UUID TYPE LABEL

/dev/loop0 squashfs
/dev/loop1 984b4ab6-2955-4131-a15a-d36d0af81667 ext4
/dev/sda1 BC46842C4683E58C ntfs
/dev/sda2 428836EE8836E059 ntfs Fastrack
/dev/sda3: PTTYPE="dos"
/dev/sda4 82B6FEAFB6FEA339 ntfs RECOVERY
/dev/sda5 0220334F20334945 ntfs Ubuntu
/dev/sda: PTTYPE="dos"

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

Device Mount_Point Type Options

aufs / aufs (rw)
/dev/sr0 /cdrom iso9660 (ro,noatime)
/dev/loop0 /rofs squashfs (ro,noatime)



Note: during upgrade to 10.04, i had foolishly installed grub on all partitions and had booting problems before. is this bcos of tht??

here is a link to tht:
http://ubuntuforums.org/showthread.php?t=1500321&highlight=neo1786

[bcbc]

first try booting a previous kernel.

Then try chkdsk (my computer, right click on x: (drive containing root.disk), Properties, Tools, Check disk for errors, Fix automatically.

When it's done, make sure that the root.disk file is still there or else look for a hidden FOUND.000 folder (sometimes chkdsk moves repaired files there).

[neo1786]

first try booting a previous kernel.

Then try chkdsk (my computer, right click on x: (drive containing root.disk), Properties, Tools, Check disk for errors, Fix automatically.

When it's done, make sure that the root.disk file is still there or else look for a hidden FOUND.000 folder (sometimes chkdsk moves repaired files there).

I ran the chkdsk. i can see the root.disk file but am not sure if its in the right place.
its in G:\ubuntu\disks
thts the partition in which ubuntu is installed

i dont want to format either cuz i have some important data...plz help

[bcbc]

Use ext2read (http://ext2read.blogspot.com/) to view the contents of the root.disk. It's read only but you should be able to copy everything you need.

Did you try a previous kernel?

PS that is the right place - if you installed to G:

You can also mount and copy files from the root.disk, or if that doesn't work you can fsck the root.disk.
1. Boot ubuntu live CD/USB
2. Mount windows partition

sudo mkdir -p /media/win && sudo mount /dev/sda5 /media/win
3. loop mount root.disk

sudo mount -o loop /media/win/ubuntu/disks/root.disk /mnt
4. ONLY if the mount of the root.disk failed.

sudo fsck /media/win/ubuntu/disks/root.disk

[neo1786]

Use ext2read (http://ext2read.blogspot.com/) to view the contents of the root.disk. It's read only but you should be able to copy everything you need.

Did you try a previous kernel?

yes.the prev kernel also gets stuck at the same point:(. i.e(initramfs)_
i tried the recovery as well.

[bcbc]

OK I just edited my prev post with instructions to try and mount the root.disk (if it doesn't mount, try fsck'ing it).

[neo1786]

OK I just edited my prev post with instructions to try and mount the root.disk (if it doesn't mount, try fsck'ing it).

hey im backing up my data using the ext tool just in case things dont work out properly...ill follow ur instructions and get back to you once im done backing up the data. thnks :)

[neo1786]

You can also mount and copy files from the root.disk, or if that doesn't work you can fsck the root.disk.
1. Boot ubuntu live CD/USB
2. Mount windows partition

sudo mkdir -p /media/win && sudo mount /dev/sda5 /media/win3. loop mount root.disk

sudo mount -o loop /media/win/ubuntu/disks/root.disk /mnt

It worked!!! :D Thank you so much!! :p\\:D/

btw can u tell me wat the prob was n y it came up???

[bcbc]

It worked!!! :D Thank you so much!! :p\\:D/

btw can u tell me wat the prob was n y it came up???

Hey, great you got it sorted :D

I can't really speculate on what the issue is except that perhaps the root.disk didn't get unmounted or sync'ed properly.

That's part of the problem with Wubi installs - when something goes wrong a normal install might recover easily - maybe one file is corrupted - but when that file is the entire virtual disk, it's a problem.

Anyway - I still think wubi works great, but it's good to be cautious i.e. with backing up data, and at some point consider migrating (http://ubuntuforums.org/showthread.php?t=1519354) to a partition.