badblocks

[Matthias Buelow]

Augusto Cesar Castoldi wrote:

>is therer any application similar to badblocks of linux on freebsd?

badsect(8)

>How can I check and mark bad blocks of HD's ?

But normally modern drives do that by themselves (and transparently
remap them). If the filesystem starts complaining about bad blocks
(that is, hard read/write errors), that means the on-disk bad sector
list is full and it's probably time to buy a new drive.

mkb.