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-   -   My computer wont read my external hd. (http://www.linuxquestions.org/questions/showthread.php?t=4175443189)

NewGuy191 12-27-2012 07:58 PM

My computer wont read my external hd.
 
I'm having a big problem with my 1tb WD Elements hd. Whenever I try to access my information 'You must format the disk drive' pops up. I have all of my info for my company on it and I haven't been able to access it for a while. How would I go about recovering my information, would I use 'Knoppix'? If so could you send me a link to where I could download a safe version and help me in the process of recovering my information?

-Thank a lot

yancek 12-27-2012 08:31 PM

You neglected to indicate which operating system you are using. Is this drive an additional data/backup drive? If a data disk, which filesystem is on it?

For recovering, you could download SystemRescueCD which has testdisk and photorec on it.

Ser Olmy 12-27-2012 08:33 PM

I hope you didn't answer yes to the "format drive" question? What file system does (or did) the drive contain?

An external hard drive can become inaccessible for a number of reasons: a damaged file system, a defective USB-to-SATA controller or a broken hard drive. A Linux live CD or DVD could help you determine the likely cause of the problem, and perhaps recover some or all of the data.

I'm a big fan of System Rescue CD, but I'll be the first to admit it's not the most beginner-friendly live CD out there.

NewGuy191 12-27-2012 09:03 PM

I'm sorry guys, I have windows xp. Is that what you mean by file system? I didn't format it and it's a back-up drive.

NewGuy191 12-27-2012 09:12 PM

LOL , no I didn't format it.

Ser Olmy 12-27-2012 09:33 PM

Quote:

Originally Posted by NewGuy191 (Post 4858121)
I'm sorry guys, I have windows xp. Is that what you mean by file system? I didn't format it and it's a back-up drive.

XP can read and write to FAT, FAT32 and NTFS file systems. FAT only works on very small drives, so it's either FAT32 or NTFS.

Linux can read all of these file systems, but may not be able to tell one damaged file system from another. In such cases, it's best to know which file system was used.

jschiwal 12-27-2012 09:41 PM

You could use Knoppix to learn what filesystem is used, or if the drive had its partition table damaged.

NewGuy191 12-27-2012 09:45 PM

File system says RAW, I also checked to see how many gb's I had left and everything says 0 bytes.

Ser Olmy 12-27-2012 09:55 PM

"RAW" is Windows' way of saying "I have no idea what this is". You need to boot a live CD and run some tests to find out what the problem is.

I'd start with smartctl -a drivename and fdisk -l. The external drive will probably be called /dev/sdb, but you can find that out by plugging it in, waiting a few seconds and then run dmesg | tail to view the end of the kernel log.

NewGuy191 12-27-2012 10:06 PM

That sounds like a plan. Where do I can access ''smartctl -a drivename and fdisk -l'' and ''dmesg | tail''?

Ser Olmy 12-27-2012 10:13 PM

Quote:

Originally Posted by NewGuy191 (Post 4858152)
That sounds like a plan. Where do I can access ''smartctl -a drivename and fdisk -l'' and ''dmesg | tail''?

You type these commands in a terminal window.

System Rescue CD presents you with a terminal with the option of starting the GUI, while some other Live CDs do it the other way around.


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