[ale] possible to use hard drives that have bad blocks ?

[Courtney Thomas]

I've got a couple of HDs that when I:

dd if=/dev/hdX of=/dev/null bs=1m

I get a single instance of something like:

FAILURE - READ_DMA status=51 <READY, DSC, ERROR> error=40
<UNCORRECTABLE> LBA=19194112 Input/output error

My question is: does this signify a single bad block and is there a way
to identify this error to some program that can block it's use, so the
drive can be used ?

Thank you,
Courtney