These notes provide information on how to create and restore raw tar backups on LS120 laser servo diskettes. To restore a raw tar backup from LS120 diskettes:
cd /directorytorestore ; tar -xvfk /dev/hdd .
Where /directorytorestore is the directory to restore to, and /dev/hdd is the LS120 device.
Beware of buggy tar variants
To utilize a laser servo diskette drive for multivolume backups, it is necessary to install the heirloom variant of tar. There is currently a serious bug in gnutar, which prevents a multivolume backup from being restored.