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ZeroUno.doc.eng
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1993-06-14
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ZeroUno v 1.17
Giuseppe Sacco
ZeroUno is pronounced like Say says "Zaeroh oonoh" (this is VERY
important to fully appreciate the program in all its features ;-P ).
ZeroUno is a program that clears all unused sectors of a partition of
an Exec device. ZeroUno does not modify any of the data present on the
partition; it only reads the disk bitmap and clears the free sectors;
obviously ZeroUno controls the type of file system mounted on the device
and it exits if the type is unknown. ZeroUno knows the old file system and
the fast file system with or without international characters and directory
caching.
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.
You can also use it coupled to Sebastiano Vigna's SuperDuper: in fact,
if you execute ZeroUno on a disk before copying it, SuperDuper becomes
faster and needs less memory.
I also saw some strange people using 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.
ZeroUno is a public domain program; you can do everything you want with
it, except selling it in commercial products. The distribution archive must
however include the executable and the doc files. For other uses, you must
obtain the written permission of the author.
ZeroUno was developed on Alessandro Pelosi's A3000, whom I wish to
thank, and was tested on A3000, A4000 and A500+; it requires the AmigaDOS
2.04 and it works also on AmigaDOS 3.0. Software devices I tested ZeroUno
on are: compressdisk.device, scsi.device, trackdisk.device, fms.device; the
hardware ones are: a Quantum LPS105Mb, many bulk disks and a Seagate
ST3144A (this one is mounted on the A4000).
In spite of all these tests, ZeroUno may still cause some data loss on
your media; in these cases, please contact the author as soon as possible.
In no cases the author has responsibility of damages and/or data loss
caused directly or indirectly by the use or misuse of this program.
Using ZeroUno implies the agreement with the clauses written in this
document.
For informations, bug reports, suggestions
Giuseppe Sacco
Via de' Notari 11
56124 Pisa PI
ITALY
or
via E. de Filippo 44
30038 Spinea VE
ITALY
UUCP: inri%pisaug.adsp.sub.org@cbmvax.commodore.com
Fido: (not anymore, soon a new node)