In short, this is where I found the best answers to my problem with my disks: https://help.ubuntu.com/community/DataRecovery
During Fedora 15 installation, I added all my 3 drives to be mounted on boot. However, after the installation ended I could not mount them any more. So I came back to Fedora 14 in the hope it was a bug, but, it was not.
I added them in fstab:
$ nano /etc/fstab /dev/sdb /media/Unus ext4 defaults 0 0 /dev/sdc /media/Duo ext4 defaults 0 0
But they do not mount:
$ mount media/Duo mount: wrong fs type, bad option, bad superblock on /dev/sdb, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so
This is what I get from dmesg:
$ dmesg | tail [ 897.592207] EXT4-fs (sdc): VFS: Can't find ext4 filesystem
However, the disks are there:
$ testDisk Disk /dev/sdb - 1000 GB / 931 GiB - ATA ST31000528AS Disk /dev/sdc - 2000 GB / 1863 GiB - ATA ST2000DL003-9VT1 Disk /dev/sdb - 1000 GB / 931 GiB - CHS 121601 255 63 Partition Start End Size in sectors > P ext4 0 0 1 121601 80 63 1953525168 [Unus] Disk /dev/sdc - 2000 GB / 1863 GiB - CHS 243201 255 63 Partition Start End Size in sectors > P Unknown 0 0 1 243201 80 63 3907029168
Note that just before installing Fedora 15, both disks were formated with ext4 and were working normally.
Is there a way to rebuild the filesystem without loosing the data reccorded on the disks?
I wish to know what I should do for both disks have andispensable data in them.
Some screenshots of the disks:
# fdisk -l Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 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: 0x34cd78a8 Device Boot Start End Blocks Id System /dev/sdc1 2048 3907028991 1953513472 8e Linux LVM