home *** CD-ROM | disk | FTP | other *** search
- Date: Sat, 25 May 1996 09:37:30 +0100
- Organization: Nortel PND, Maidenhead.
- Lines: 36
- Message-ID: <31A6C6CA.5268@nortel.ca>
- References: <Pine.BSD.3.92.960524113202.8993A-100000@miso.wwa.com>
- NNTP-Posting-Host: bmdhh18.bnr.ca
- Mime-Version: 1.0
- Content-Type: text/plain; charset=us-ascii
- Content-Transfer-Encoding: 7bit
- X-Mailer: Mozilla 3.0b4 (X11; I; HP-UX A.09.03 9000/712)
- To: executor@ardi.com
- X-MailNews-Gateway: From newsgroup comp.emulators.mac.executor
- Sender: owner-executor@ardi.com
- Precedence: bulk
-
- WILLIAM J. MILLER wrote:
-
- > The IBM PC drives can store more information on disks then the standard
- > format command allows. Available on various online services, FTP sites,
- > and so one, are programs called dynamic formatters. I have seen (and
- > used, but don't ask where) a formatter that squeezed 2.1 meg on a 1.4 meg
- > disk by rewriting the track structure on the disk. It took FOREVER to
- > format the disk, and the disks had a high error rate, making it a toy more
- > than anything, but it can be done.
- >
-
-
- Yes, software to write disks to a higher/different capacity exists. This
- has nothing to do with the executor reading MAC formatted 800k floppies.
- Such software merely removes the overhead of inter-sector gaps, and may
- also write to tracks beyond the 80 track position and/or step backwards
- to a position before track 0. This may result in data loss since the
- tolerances of the drive and floppy are being exceeded.
-
- MAC 800k floppies have data written at a higher data rate on the outside
- tracks of the disk than they do on the inner (nearest the spindle)
- tracks. Since the media has uniform magnetic properties throughout its
- surface, it can therefore hold the data without loss (since capacity
- per unit area is within spec for the media).
-
- The data writing speed on a PC drive cannot be altered by software,
- therefore PC drives will not read/write a MAC 800k disk.
-
- I hope this is clear enough.
- Iain.
-
- --
- Iain W. Barker, Maidenhead, UK. .-. .-..-..-..-..-..-..-.
- Work: ibarker@nortel.ca Tel: 01628 794051 | |__ | || .` || || | > <
- Home: iain@yoshac.demon.co.uk 01628 826518 `----'`-'`-'`-'`----''-'`-`
- Mobile: 0468 434792 Fax: 01628 794569 Freedom for life
-
-