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Does dd if=/dev/zero of =/dev/cciss/c0d0 bs=1M wipe over the HPA, DCO, and any bad sectors?
dd if=/dev/zero of =/dev/cciss/c0d0 bs=1M
DD cannot erase the HPA or remapped sectors as it can't see them. ATA's secure erase command should do this, but there is no way to truly verify that it has been done.
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