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I'm currently on a macbook with a 1TB external hard drive connected trough a USB hub wich is connected on my macbook. The problem is, my disk, wich is partitioned in 2 (one HFS+ and one NTFS) keeps getting corrupted, recently it was my HFS+ partition, I could not repair it using the Apple's Disk utility, but was able to backup my files.

Is it synonym that my hard drive is failing? Is it because of my USB hub?

I also keep all my iTunes library on my external HD (HFS+ partition), and did a lot of transfer lately, adding files, removing etc. the last time, my partition got corrupted after a lot of deleted items.

If anybody has an idea of what to check first, what could cause the problem, I would appreciate it :)

Thanks!

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If you suspect the USB hub may be the problem, try using it without the hub for a while. If the drive is powered through the USB cable (i.e. it doesn't have it's own power connector) then the USB hub may not be able to deliver enough power to it. – Wayne Johnston May 12 '10 at 2:42
the hub was self-powered, but I still bought a new better one, let see.... – allaire May 12 '10 at 11:34
I build my own external drives, never a problem with any of them, every pre-built unit I ever owned has had problems. Just warrantied my Seagate FreeAgent Pro earlier this year. Buy a USB external enclosure, install a WD 5400rpm green drive, now you have a reliable unit. – Moab Jun 29 '10 at 16:01
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Is it within warranty? If so, I would return it.

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how so, have you come accross this kind of problem? My HD is a WD essentiel, I have it since Jan. – allaire May 12 '10 at 11:35
I had a USB western digital that was occasionally corrupting files. I performed a full format on it and still had file corruption, so I could not rely on the device. If there is very rare corruption on a heavily used device, I think that's ok. But if files are commonly being corrupted, return it. – bryan May 12 '10 at 13:32
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