How long should this take?

How to use TestDisk to recover lost partition
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Posts: 1
Joined: 26 Feb 2013, 20:37

How long should this take?

#1 Post by mikkif8 »

Hi - I'm following your instructions from CG's "damaged hard disk" wiki page under the OS X section and am currently running dd on a 250GB WD Passport drive. How long should this run? It's been running for one day now. I can see the bytes transferred but the next two lines are

dd: /dev/disk4: Input/output error

I can tell that the bytes are changing but how can I tell if anything is actually getting transferred or how long this will take. I don't want to stop if something is actually happening.

Thanks in advance.

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Re: How long should this take?

#2 Post by cgrenier »

Disk with bad sectors are very long to clone. It can take days or even weeks.
It's one of the reason why it's better to use GNU ddrescue, there is a progress indicator and you can stop and resume the copy.