added port of dosfsck. Does not work yet as I cannot figure how to open the device...
[reactos.git] / rosapps / sysutils / dosfsck / README
1 dosfsck, version 1
2 ==================
4 WARNING: This is ALPHA test software. Use at your own risk.
6 dosfsck is the Linux equivalent of PC/MS-DOS' CHKDSK. It checks the
7 consistency of PC/MS-DOS file systems and optionally tries to repair
8 them. The tests dosfsck performs are described in the man page.
10 dosfsck needs header files from dosfs.9 (or later) to compile.
12 Before using dosfsck to repair a file system that contains data of any
13 value, you should verify that dosfsck is able to correct all reported
14 errors. (Except fatal errors and those reported as unfixable, of
15 course.) In order to do this, run it with the -V option, e.g.
17 dosfsck -V /dev/sda1 (automatic check)
18 or dosfsck -V -r /dev/sda1 (interactive check and repair)
20 dosfsck will perform two passes: in the first pass, inconsistencies are
21 detected and a list of changes to correct the problems is generated. In
22 the second pass, those changes are applied whenever dosfsck reads data
23 from disk. Hence no fixable errors should be reported in the second
24 pass if the first pass was successful.
26 Please notify the author if fixable errors are reported in the second
27 pass.
29 After verifying that dosfsck appears to be able to perform the desired
30 operations, either confirm that you want the changes to be performed
31 (if dosfsck was started with -r) or re-run dosfsck with the -a option
32 (if it was started without -r).
34 Please send bug reports, comments, flames, etc. to
35 or
37 - Werner
39 FAT32 and LFN support
40 =====================
42 I've finally implemented some of the new features of MS-DOS
43 filesystems: FAT32 and long filenames.
45 FAT32 is automatically detected and of course the different FAT
46 structure is handled. (Internally many changes were needed, so 32 bit
47 variables for all cluster numbers and 64 bit vars for offsets inside
48 the filesystem.) New checks for FAT32 are most notably on the backup
49 boot sector and the new info sector. Also the possibility that the
50 root directory resides in a cluster chain (instead of in a static
51 area) on FAT32 is handled.
53 dosfscheck also knows about VFAT long filenames now. It parses those
54 names and uses them in listings etc. when available. There are also
55 some checks on the (cruel) structure of how LFNs are stored and some
56 attempts to fix problems.
58 - Roman <>
60 BTW, version 2 isn't ALPHA anymore :-)