DISKCHECK(1) General Commands Manual DISKCHECK(1)
NAME
diskcheck - check a disk for bad sectors
SYNOPSIS
diskcheck device start count
EXAMPLES
diskcheck /dev/at0 0 1200
# Check 1.2 MB diskette
diskcheck /dev/at0 100 50
# Check blocks 100 to 149
DESCRIPTION
Diskcheck checks a disk for bad sectors by reading in each sector, writing a known bit pattern onto it, reading it back in and comparing
with what was written. This check is then done a second time. Bad sectors are reported. After each sector is tested, the original sector
is restored. Only use this program on unmounted partitions. Killing it part way through may result in lost data.
SEE ALSO
format(1).
DISKCHECK(1)
