Repair options (When using -r or -o)
-B, --backup Make a backup of the .MYD file as filename-time.BAK
--correct-checksum Correct checksum information for table.
-D, --data-file-length=# Max length of data file (when recreating data
file when its full)
-e, --extend-check Try to recover every possible row from the data file
Normally this will also find a lot of garbage rows;
Dont use this option if you are not totally desperate.
-f, --force Overwrite old temporary files.
-k, --keys-used=# Tell MyISAM to update only some specific keys. # is a
bit mask of which keys to use. This can be used to
get faster inserts!
-r, --recover Can fix almost anything except unique keys that arent
unique.
-n, --sort-recover Forces recovering with sorting even if the temporary