On 26.11.2017 14:37, bd wrote: > > Hi to Everyone, > > My > > WD P/N : WD10000H 1Q > > S/N : WCAU4D 164675 > > is about 4 or 5 years old. It is an external drive using external > power supply. At start, I had formatted it in ext3, so that I 'd be > able to storage videofiles larger than 2 Gb. Since then, I storaged a > number of files in several directories, subdirectories etc.. I never > had any problem until now. > > This drive no longer mounts. It does not mount automatically as it > used to, and I don't know how to mount it manually. My other similar > drives mount on /dev/sdb1 or /dev/sr0... depending on to which > computer I mount it. In case it doesn't automatically mount, I just type : > > #mount /dev/sdb1 /media/bd/ext > > and it works > > but right now I don't know for sure the device name to mount. > > If I list my /dev directory using ls -lt, I can see what new device > appears in the list whenever I plug my external drive. It shows 'sdb'. > Not 'sdb1' as for other external drives, just 'sdb'. If now I type : > > # mount /dev/sdb /media/bd/ext > > this gets the external drive to react : the light goes up and down for > awhile, and then I get this message : > > 'you must specify the filesystem' > > But, if I try : > > # mount -t ext3 /dev/sdb /media/bd/ext > > I get this : 'wrong fs type, bad option, bad superblock on /dev/sdb…' > > same result if I try mounting on 'fat', 'msdos'… filesystems, but I > doubt if there are any FAT or msdos space left on this device since I > had reformated it to ext3. > > At last, I tried : > > # fsck /dev/sdb (the external drive starts to light, then : > > 'fsck ext2 : superblock invalid. Trying to backup blocks > > fsck ext2 : bad magic number in superblock while trying to open /dev/sdb > > Now, if I type : > > cat /proc/scsi/scsi > > I get this : > > scsi0 ATA MAXTOR STM > > scsi1 ATA MAXTOR STM > > scsi5 WD My Book Direct Access > > > /etc/fstab > > does not show any sdb device > > How am I to get this drive back to operation, or, at least, to > recuperate the datafiles that are stored in that WD external drive ? > > Thanks in advance to tell me what diagnosis and repair tools I could use > > Bernard > You have to specify partition to mount not whole disk device. First of all check if you got disk name right (they could mix up on boot time): # blkid After that, right mount command should be like this: # mount -t ext3 /dev/sdb1 /media/bd/ext If you suspect disk could be failing, you can mount it as read-only, to see if it will mount cleanly: # mount -t ext3 -o ro /dev/sdb1 /media/bd/ext To check unmounted ext3 filesystem of partition 1 you should type: # fsck.ext3 /dev/sdb1
-- With kindest regards, Alexander. ⢀⣴⠾⠻⢶⣦⠀ ⣾⠁⢠⠒⠀⣿⡁ Debian - The universal operating system ⢿⡄⠘⠷⠚⠋⠀ https://www.debian.org ⠈⠳⣄⠀⠀⠀⠀
