Short: zerofills all empty blocks on any device Author: inri%pisaug.adsp.sub.org@cbmvax.cbm.commodore.com (Giuseppe Sacco) Architecture: m68k-amigaos ZeroUno is a program that clears all unused sectors of a partition of an Exec device. It is particularly useful together with Antonio Schifano's compressdisk.device, to give back disk space on the device work disk after deleting some files on a virtual partition. Some strange people use ZeroUno from time to time for zeroing (!) unused sectors of hard disks subject to data loss, in order to let Dave Haynie's DiskSalv recover only the interesting files. Likewise, it might be useful to make sure none could be able to recover some files you deleted......