ftbad" -- Command" "

Manipulate bad-block list on a floppy-tape cartridge 

ffttbbaadd [[--rrww]] [[_d_e_v_i_c_e]]
The command ftbad lets you manipulate the list of bad blocks on a floppy-tape cartridge. It recognizes the following options:

--rr
Read the list of bad blocks from floppy-tape cartridge, and write them to the standard-output device. The output will appear something like the following: 
     557
     1033
     89640

--ww
Read a list of bad blocks from the standard-input device, and write it onto the floppy-tape cartridge.

_d_e_v_i_c_e
The floppy-tape device to manipulate. If you do not name a device on ftbad's command line, by default it uses /dev/ft, which rewinds the tape upon close. For a list of tape devices that you can use the Lexicon entry for tape.

Example

To modify the bad block list for a cartridge, do the following:

+o
First, use the command: 
     ftbad -r > badlist

This reads the list of bad blocks and writes it into file badlist.

+o
Second, edit badlist. Each line in this file will name only one bad block, in decimal notation.

+o
Finally, write the edited list back onto the tape cartridge with the command: 
     ftbad -w < badlist

See Also

Notes

Do not change the bad block list of a tape that contains data you wish to retrieve. You should use ftbad only when you see repeated I/O errors at the same block on a tape and wish to mark that block as being bad before you reuse the tape. Caveat utilitor!