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This page displays the COHERENT manpage for ftbad [Manipulate bad-block list on a floppy-tape cartridge].
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ftbad -- Command Manipulate bad-block list on a floppy-tape cartridge ftbad [-rw] [device] The command ftbad lets you manipulate the list of bad blocks on a floppy- tape cartridge. It recognizes the following options: -r 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 -w Read a list of bad blocks from the standard-input device, and write it onto the floppy-tape cartridge. device 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: -> First, use the command: ftbad -r > badlist This reads the list of bad blocks and writes it into file badlist. -> Second, edit badlist. Each line in this file will name only one bad block, in decimal notation. -> Finally, write the edited list back onto the tape cartridge with the command: ftbad -w < badlist See Also commands, ft, tape 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!