If errors occur when a tape is being read, retension the tape, clean the tape drive, and then try again.
Retension a magnetic tape cartridge with the mt command.
For example:
$ mt -f /dev/rmt/1 retension $ |
Do not retension non-QIC tape drives.
To rewind a magnetic tape cartridge, use the mt command.
For example:
$ mt -f /dev/rmt/1 rewind $ |