On Sat 10 Jul 2010 12:37:22 NZST +1200, Daniel Hill wrote:

Sounds to me like the disk is dead because it's got read error, not
because the sata plug broke. No amount of data damage you can do with a
broken plug would affect read performance with dd once you connect it up
properly. You don't even need ddrescue. If you haven't yet done so, do
that now and start again.

If the disk had read errors (average 1MB/s sounds rather like it) then
technically you run rescue operations on a copy of a ddrescue copy. If
you don't have the space you get only 2 goes (one on the first copy, one
on the bad disk). Buy another disk if it's important.

You can find out if the disk has surface errors by running the smartctl
command of the smartmontools package. Note that if you connect the disk
through anything involving USB then you need an adapter which is
designed properly, and a rather recent version of smartmontools.

Volker

-- 
Volker Kuhlmann
http://volker.dnsalias.net/     Please do not CC list postings to me.

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