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- From: lupe@ukw.uucp (Lupe Christoph)
- Newsgroups: comp.arch.storage
- Subject: Re: R/W Optical Drive file system compatibility
- Message-ID: <1992Sep6.104541.4811@ukw.uucp>
- Date: 6 Sep 92 10:45:41 GMT
- References: <1992Sep4.001905.1064@organpipe.uug.arizona.edu>
- Sender: uucp@stasys.sta.sub.org
- Organization: cic
- Lines: 48
-
- rawn@manduca.neurobio.arizona.edu (Rawn Shah) writes:
-
-
- > One problem we came across immediately is that even if the drives were
- >compatible (same disk size & conforming to ISO), the actual file system on
- >the disk as saved by the driver software differs; on the Sun its a SunOS
- >file system and on the DOS-based 486, it uses the FAT tables and such.
- >So data stored on a disk on the DOS system cannot be read by the MO drive
- >on the Sun and vice versa.
-
- > I had the idea that I might stick a DOS emulator on the Sun and have
- >it read the disks in DOS format. BUT as far as I know the DOS emulator
- >I looked up (SoftPC for SunOS 4) does not have any drivers for r/w optical
- >drives and even if I did NFS-mount the drive (the other option given by
- >SoftPC) the actual file format is still SunOS and so the disks wouldn't
- >be readable by the DOS machine.
-
- > As far as I know so far there are no compatibility measures on such
- >kinds of drives. Now there're phase change r/w optical drives but I still
- >haven't heard of any compatibility between systems either.
-
- I have two solutions for you. One is hacking the mtools a bit. The mtools
- implement the DOS file system portably.
-
- The other is using FILEdriver from OSS. This is a WORM filesystem that
- has been implemented on DOS, Novell, and SunOS. Of course the file system
- has the same structure on all three platforms; even the code derives from
- a common source.
-
- The drawback is that while you can run a WORM filesystem on any random
- access media, it will assume WORM behaviour: any sector can be written
- at most one time. This seems to be OK with your application, though.
- Of course, for MOs FILEdriver offers a "wipe" utility to erase the disk.
-
- If you are interested in FILEdriver, call OSS:
-
- Optical Software Solutions, Inc.
- Keith Ragsdale
- 1956 Marion Court
- Lafayette, CA 94549
- Tel (510) 256-1066
- FAX (510) 256-6461
- Email uunet!ossi.com!ossie!keith
- --
- | ...!unido!ukw!lupe (German EUNet, "bang") | Disclaimer: |
- | lupe@ukw.UUCP (German EUNet, domain) | As I am self-employed, |
- | suninfo!alanya!lupe (Sun Germany) | this *is* the opinion |
- | Res non sunt complicanda praeter necessitatem. | of my employer. |
-