>I'd like to develop IFS drivers for Macintosh and Linux file systems, but I
>need readable infos on both of them.
>Linux sources are OK and I have them, but they're not just what I call handy
>for the task.
>On the other hand Macintosh filesystem seems to be quite an unreachable
>Any info welcome.
>Thanks and see ya!
The Linux ext2fs IFS already exists (it's on ftp-os2.nmsu.edu in
I haven't heard of a mac IFS yet, but I know there are 2 things that could
prevent such an IFS to be written (at least for floppies) :
- There's a hardware issue that prevent some kind of MAC floppies to be read
on a PC floppy drive.
- There's a bug in OS/2 that prevents the system to allocate a drive letter
for floppy drives that don't have a valid DOS boot sector (OS/2 makes some
strong assumptions on the format of floppy diskettes)
Hope this helps,
Matthieu Willm I do *NOT* speak for IBM ...
That only applies to the Mac 800k disks (NOT the 1.44MB's). The 800's aren'tQuote:>I haven't heard of a mac IFS yet, but I know there are 2 things that could
>prevent such an IFS to be written (at least for floppies) :
>- There's a hardware issue that prevent some kind of MAC floppies to be read
> on a PC floppy drive.
Yeah, I think you're right. I don't even know if WARP can use any FS otherQuote:>- There's a bug in OS/2 that prevents the system to allocate a drive letter
> for floppy drives that don't have a valid DOS boot sector (OS/2 makes some
> strong assumptions on the format of floppy diskettes)
Why snooze with microsloth windoze? GET WARPED!
I would really like to know how to get a copy of this, if anyone knows.Quote:>You can use HPOFS (optical file system for worms and mo drives) with floppies.
>you take a hit in the amount of data they can store (1.44s get reduced to
>something like 1.25) but you get long names and all the good stuff. I'm not
>sure how public HPOFS is. I think it would be useful to a good segment of the
>OS/2 population though.
-- Rob McDermid
I think that's a "feature" of OS2DASD.DMD. As far as I got from some literature
OS2DASD.DMD and OS2CDROM.DMD are the ones that take care of drive letters. They
use .ADD drivers to get to the actual hardware (.ADD's are floppy controller
drivers, scsi, and IDE etc...), and they use IFS's on top to store actual
It is theoretically possible to create and aditional OS2REMOV.DMD to support
things like ZIP-drives and CD-R's. Also floppy support and LAN drives can be
controlled by it. This would mean that a floppy is no longer a removable HD
and Mac FS can be implemented.
BTW: The coolest thing would be if a drive letter was created at the time
you insert a floppy drive, CD-ROM, etc...
But my guess is that it's not done, because too much in the actual OS
would have to be changed to support something like that nicely.
ANY TAKERS ON REWRITING OS2DASD ??? (IMB hint, hint :) )
:Why snooze with microsloth windoze? GET WARPED!
I am considering porting the ext2 filesystem over to OS/2 as an IFS, and
I would like to find out:
(a) Is there enough support that this would be used at all?
(b) Are there any OS/2 developers that would like to join me in this
I have set Follow-ups to comp.os.linux.misc.
It's fascinating to think that all around us there's an invisible world we
can't even see. I'm speaking, of course, of the World of the Invisible Scary
Skeletons. -- Deep Thoughts by Jack Handey [SNL]