Impossible to boot after increasing Ubuntu 14.04 LTS partition !

[gperrot]

Hello !

I am using Ubuntu 14.04 LTS on my laptop with a dual boot (Win7). Last days, using a LiveUSB, I decrease the size of my Win7 partition and I increase the size of my Ubuntu partition. Unfortunately, during the resize of the Ubuntu partition, my laptop was not well connected to main electricity and end of battery life happened before the end of the resizing process...). After that, I was not able to boot on LiveUSB (I recreated one). Furthermore, I was not able to boot on hard disk with dual partition :


error : attempt to read or write outside of partition
Entering rescue mode...
grub rescue

Now, after booting on my new LiveUSB, I can have some diagnostic command results :


ubuntu@ubuntu:~$ df
Filesystem 1K-blocks Used Available Use% Mounted on
/cow 999320 104688 842204 12% /
udev 1938416 4 1938412 1% /dev
tmpfs 389984 1228 388756 1% /run
/dev/sdb1 3914192 2078080 1836112 54% /cdrom
/dev/loop1 985344 985344 0 100% /rofs
none 4 0 4 0% /sys/fs/cgroup
tmpfs 1949908 1028 1948880 1% /tmp
none 5120 4 5116 1% /run/lock
none 1949908 80 1949828 1% /run/shm
none 102400 36 102364 1% /run/user
/dev/sda3 153471104 143977488 9493616 94% /media/ubuntu/C8D8BA53D8BA400C
/dev/loop0 999320 104688 842204 12% /media/ubuntu/01322115-d3d3-46ce-83a8-0143153abebb

It seems that the content of Win7 partition (sda3) is OK.

When I try to see the content of the Ubuntu partition (sda6), here is the error message :


Unable to access “147 GB Volume”
Error mounting /dev/sda6 at /media/ubuntu/370e34c9-1ba6-4cca-a1b2-22bbd261f22b: Command-line `mount -t "ext4" -o "uhelper=udisks2,nodev,nosuid" "/dev/sda6" "/media/ubuntu/370e34c9-1ba6-4cca-a1b2-22bbd261f22b"' exited with non-zero exit status 32: mount: wrong fs type, bad option, bad superblock on /dev/sda6,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so

If I try to see syslog messages about my sda partitions :


ubuntu@ubuntu:~$ dmesg |grep sda
[ 10.515500] sd 0:0:0:0: [sda] 625142448 512-byte logical blocks: (320 GB/298 GiB)
[ 10.515613] sd 0:0:0:0: [sda] Write Protect is off
[ 10.515616] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 10.515775] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 10.583508] sda: sda1 sda2 sda3 sda4 < sda5 sda6 >
[ 10.584836] sd 0:0:0:0: [sda] Attached SCSI disk
[ 13.670166] EXT4-fs (sda6): error loading journal
[ 34.119371] Adding 4042748k swap on /dev/sda5. Priority:-1 extents:1 across:4042748k FS
[ 334.553551] EXT4-fs (sda6): error loading journal

I would like to repair my sda6 partition in order to restore some files I didn't backup before and better than that, if it is possible, restore my dual boot ubuntu/win7 in order to avoid reinstallation of both OS.

Could you help me to achieve that please ?

Thanks in advance for your help !!!

Gigi

[yancek]

You could try from the Live usb to repair the filesystem on sda with fsck. The second post at the link below discusses it and gives an example command.

http://ubuntuforums.org/showthread.php?t=1508294

[Topsiho]

I guess that the UUID was changed by the repartitioning, and so your /etc/fstab is not correct anymore, and the partition could not be found.
See your file /etc/fstab and follow it's suggestion to use 'blkid' to find the correct UUID's of the partitions. Then correct (as root, using sudo and gedit) /etc/fstab

Topsiho

[gperrot]

Thanks a lot for your help !

I tried sudo e2fsck -f -y -v /dev/sda6 and a lot of errors have been corrected on sda6.

Now, I can mount /dev/sda6.

However, when I tried to boot on hard disk, I have the error message :

error : file '/boot/grub/i386-pc/normal.mod' not found.
Entering rescue mode...
grub rescue>

When I check the contents of sda6, it seems that some of its content is missing :

ubuntu@ubuntu:~$ df
Filesystem 1K-blocks Used Available Use% Mounted on
/cow 999320 111248 835644 12% /
udev 1938416 4 1938412 1% /dev
tmpfs 389984 1232 388752 1% /run
/dev/sdb1 3914192 2078080 1836112 54% /cdrom
/dev/loop1 985344 985344 0 100% /rofs
none 4 0 4 0% /sys/fs/cgroup
tmpfs 1949908 1028 1948880 1% /tmp
none 5120 4 5116 1% /run/lock
none 1949908 76 1949832 1% /run/shm
none 102400 40 102360 1% /run/user
/dev/sda6 66588320 10701080 52488280 17% /media/ubuntu/370e34c9-1ba6-4cca-a1b2-22bbd261f22b

ubuntu@ubuntu:/media/ubuntu/370e34c9-1ba6-4cca-a1b2-22bbd261f22b$ ls -a
. bin initrd.img lost+found opt run vmlinuz
.. cdrom initrd.img.old mnt root var vmlinuz.old

Any idea how to progress now ?

Thanks in advance for your help.

Gigi


You could try from the Live usb to repair the filesystem on sda with fsck. The second post at the link below discusses it and gives an example command.

http://ubuntuforums.org/showthread.php?t=1508294

[gperrot]

For information, here is my boot-info link : http://paste.ubuntu.com/12295989

[gperrot]

I don't understand where is my /home contents :


ubuntu@ubuntu:~$ ls -la /media/ubuntu/SDA6
total 288
drwxr-xr-x 10 root root 4096 août 27 18:35 .
drwxr-x---+ 3 root root 4096 sept. 7 16:48 ..
drwxr-xr-x 2 root root 4096 août 27 18:11 bin
drwxrwxr-x 2 root root 4096 août 27 18:00 cdrom
lrwxrwxrwx 1 root root 33 août 27 18:35 initrd.img -> boot/initrd.img-3.19.0-26-generic
lrwxrwxrwx 1 root root 33 août 27 18:09 initrd.img.old -> boot/initrd.img-3.19.0-25-generic
drwx------ 2197 root root 258048 août 27 17:57 lost+found
drwxr-xr-x 2 root root 4096 avril 10 2014 mnt
drwxr-xr-x 3 root root 4096 août 27 19:22 opt
drwx------ 2 root root 4096 août 5 05:23 root
drwxr-xr-x 12 root root 4096 août 5 05:22 run
drwxr-xr-x 13 root root 4096 août 5 05:25 var
lrwxrwxrwx 1 root root 30 août 27 18:35 vmlinuz -> boot/vmlinuz-3.19.0-26-generic
lrwxrwxrwx 1 root root 30 août 27 18:09 vmlinuz.old -> boot/vmlinuz-3.19.0-25-generic


In order to help me to be able to restore my /home contents, here is the results of Analyse and Quick Search of testdisk command :


Analyse :

Disk /dev/sda - 320 GB / 298 GiB - CHS 38913 255 63
Current partition structure:
Partition Start End Size in sectors

1 P Windows RE(store) 0 32 33 1372 250 30 22054912
2 * HPFS - NTFS 1372 250 31 1385 186 17 204800 [System Reserved]
3 P HPFS - NTFS 1385 186 18 20491 254 63 306942220
4 E extended 20492 28 17 38913 70 5 295936000
5 L Linux Swap 38409 248 48 38913 70 5 8085504
X extended 20492 28 18 38409 248 47 287850495
6 L Linux 20492 60 49 38409 248 47 287848448

*=Primary bootable P=Primary L=Logical E=Extended D=Deleted


Quick Search :

Disk /dev/sda - 320 GB / 298 GiB - CHS 38913 255 63
Partition Start End Size in sectors
HPFS - NTFS 0 32 33 1372 250 30 22054912 [Recovery]
HPFS - NTFS 1372 250 31 1385 186 17 204800 [System Reserved]
HPFS - NTFS 1385 186 18 20492 28 16 306944000
Linux 20492 60 49 28914 120 6 135303168
Linux 29987 189 27 38409 248 47 135303168
> Linux Swap 38409 248 48 38913 70 5 8085504


1) Any idea how to restore my /home contents ?

2) Any idea how to install a new ubuntu system + dual boot with my Win7 partition which seems OK

Thanks in advance for your help.

Gigi

[yancek]

Your boot repair output does show grub code in the master boot record. It is pointing to sda6 where it shows Ubuntu is installed. Usually with boot repair, one will see several boot files. On sda6, nothing shows. Nor is there a grub.cfg file for that partition so it won't boot. Did you have a separate home partition? If not, it isn't showing. If you had a lot of important data there, you might try using testdisk to recover it.

Losing power during a partition change is no doubt what caused all these problems. Check the link below if you want to reinstall as it is a very detailed tutorial on installing Ubuntu and dual booting and also has a lot of other useful related info with some good links. Installing windows 7 first will make things a lot easier.

http://www.dedoimedo.com/computers/ubuntu-14-04-install-guide.html

[gperrot]

Thanks a lot for your reply. No, I did not have a separate home partition. How can use testdisk to recover it ?
Furthermore, is it possible to recreate a dual boot using my existing sda3 Win7 partition which is supposed to be unhurt ?

Thanks in advance for your help.

Gigi


Your boot repair output does show grub code in the master boot record. It is pointing to sda6 where it shows Ubuntu is installed. Usually with boot repair, one will see several boot files. On sda6, nothing shows. Nor is there a grub.cfg file for that partition so it won't boot. Did you have a separate home partition? If not, it isn't showing. If you had a lot of important data there, you might try using testdisk to recover it.

Losing power during a partition change is no doubt what caused all these problems. Check the link below if you want to reinstall as it is a very detailed tutorial on installing Ubuntu and dual booting and also has a lot of other useful related info with some good links. Installing windows 7 first will make things a lot easier.

http://www.dedoimedo.com/computers/ubuntu-14-04-install-guide.html

[gperrot]

Any ideas how to solve my 2 points above ?

Thanks in advance for help.

Gigi

[yancek]

You can download testdisk from the site below. If you scroll down the page, you will find a Step by Step tutorial link on how to use it.

http://www.cgsecurity.org/wiki/TestDisk

You need a windows install disk to put its code in the mbr to boot it. If you want to boot Ubuntu, you will have to reinstall Grub as you don't have the necessary Grub files according to your boot repair output. The official Ubuntu Grub page, probably start at section 2.2 to reinstall Grub "Fixing a broken system".

https://help.ubuntu.com/community/Grub2/Installing