NAME

     readall - read a device quickly to check for bad blocks


SYNOPSIS

     readall [-bt] file


OPTIONS

     -b   Produce shell script on stdout that calls badblocks

     -t   Just print device size


EXAMPLES

     readall /dev/hd0    # Read all of /dev/hd0

     readall -b /dev/hd1 >s
                         # Generate shell script on s


DESCRIPTION

     Readall reads all of the named device in  large  chunks.  It
     reports  about blocks that it cannot read. Unlike diskcheck,
     it does not attempt to write on the disk, making it safer to
     use  when  one  is worried about a sick system.  When the -b
     flag is given, the output is a shell script that  calls  the
     badblocks  program  to  marked all the bad blocks.  Whenever
     installing MINIX 3, it is wise to run readall  with  the  -b
     flag first on all the hard disks.


SEE ALSO

     badblocks(8).