[CentOS] Strangely slow disk

[Alan McKay]

Also - boot a live Linux CD and then from there do hdparam again and
compare results,   If they differ vastly at least you know it is
something in your running system which is the culprit.  If they are
roughly the same then it is likely the drive gone bad.  Though check
the man page for hdparam to see if disk fragmentation will affect the
results it gives.


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