2.10. Can I install on a disk with bad blocks?

FreeBSD's bad block (the bad144 command) handling is still not 100% (to put it charitably) and it must unfortunately be said that if you've got an IDE or ESDI drive with lots of bad blocks, then FreeBSD is probably not for you! That said, it does work on thousands of IDE based systems, so you'd do well to try it first before simply giving up.

If you have a SCSI drive with bad blocks, see this answer.