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I have been using a raspberry PI since more than one year, with two USB 500GB IDE hard drives as a NAS/torrent box. Yesterday, one of the two hard drives started a repetitive rattling noise, and I could not read data from it through sftp.

I assumed it was broken, so I opened the box the raspberry and the hard drives were in, connected the first HD to my laptop using the IDE to USB adapter I had. Windows wasn't able to mount it. I really cannot remember which FS this HD is using, so I tried to mount it on a Debian Virtual Machine. The image below shows the error I get. I have no idea what it means, what I understand is that Debian does not recognize which FS the hard disk is using.

screenshot

This is the result of fdisk -l (only the part regarding the mentioned HDD):

Disk /dev/sdb: 500.1 GB, 500107862016 bytes
81 heads, 63 sectors/track, 191411 cylinders, total 976773168 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: 0x17e817e7

  Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048   976773167   488385560   83  Linux
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You're trying to mount the entire drive, not the formatted parttion. Try mounting /dev/sdb1.

The parition type Linux suggests ext2, ext3, ext4. NTFS would be ntfs (or hpfs)

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"Rattling noise" from the disk probably means the disk joined the big RAID in the sky. My condolences. The data on the disk was hopefully not critical...

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