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fsck.cpm - check a CP/M file system


fsck.cpm [-f format] [-n] image


fsck.cpm is used to check and repair a CP/M file system. After reading the directory, it
makes two passes. The first pass checks extent fields for range and format violations
(bad status, extent number, last record byte count, file name, extension, block number,
record count, size of .COM files, time stamp format, invalid password characters, invalid
time stamp mode). The second pass checks extent connectivity (multiple allocated blocks
and duplicate directory entries).

fsck.cpm can not yet repair all errors.


-f format
Use the given CP/M disk format instead of the default format.

-n Open the file system read-only and do not repair any errors.


Upon successful completion, exit code 0 is returned.


Any errors are indicated by exit code 1.


/etc/cpmtools/diskdefs CP/M disk format definitions


CPMTOOLSFMT Default format


image: used/total files (n.n%
non-contiguous), used/total blocks" No inconsistencies could be found. The number
of used files actually is the number of used extents. Since a file may use more
than one extent, this may be greater than the actual number of files, but a correct
measure would not reflect how many files could still be created at most. A file is
considered fragmented, if sequential data blocks pointed to by the same extent do
not have sequential block numbers. The number of used blocks includes the blocks
used for system tracks and the directory.


This program is copyright 1997–2012 Michael Haardt <[email protected]>. The Windows port
is copyright 2000, 2001, 2011 John Elliott <[email protected]>.

This program is free software; you can redistribute it and/or modify it under the terms of
the GNU General Public License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program.
If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA.

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