diskchec.1

操作系统设计与实现源码

.TH DISKCHECK 1
.SH NAME
diskcheck \- check a disk for bad sectors
.SH SYNOPSIS
\fBdiskcheck \fIdevice \fIstart \fIcount\fR
.br
.de FL
.TP
\\fB\\$1\\fR
\\$2
..
.de EX
.TP 20
\\fB\\$1\\fR
# \\$2
..
.SH EXAMPLES
.EX "diskcheck /dev/at0 0 1200" "Check 1.2 MB diskette"
.EX "diskcheck /dev/at0 100 50" "Check blocks 100 to 149"
.SH DESCRIPTION
.PP
\fIDiskcheck\fR 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.
.SH "SEE ALSO"
.BR format (1).