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- From: shurr@cbnews.cb.att.com (larry.a.shurr)
- Subject: FDFORMAT (was: Trying to create OS/2-Bootable 5.25" Diskette)
- Organization: AT&T Bell Laboratories, Columbus, OH
- Date: Thu, 28 Jan 1993 17:39:37 GMT
- Message-ID: <1993Jan28.173937.3169@cbnews.cb.att.com>
- Keywords: reboot, boot, bootable, se20boot, boot20, bootdisk.txt
- References: <roelle.727715397@uars_mag> <C1F7BD.77s@news.cso.uiuc.edu>
- Lines: 31
-
- In article <C1F7BD.77s@news.cso.uiuc.edu> jst50986@uxa.cso.uiuc.edu (Jack S. Tan) writes:
- }roelle@uars_mag.jhuapl.edu (Curtis Roelle) writes:
- }> I have the Service Pack installed on my system, if that makes any
- }> difference. So, what is the proper way to create an OS/2 bootable 5.25"
- }> 1.2MB flopy disk?
-
- }This method may not be proper, but it does work: format the diskette to a
- }higher-capacity, nonstandard format. Using FDFORMAT (available from various
- }anonymous FTP sites), I was able to create a 1.47MB diskette, on which I
- }created my boot diskette. OS/2 is able to boot from such a disk, unlike
- }DOS. Also, when you are prompted for the install diskette in making the
- }boot disk, you can use the boot disk from the CSD. It seems to work also.
-
- Yes. It appears that OS/2 actually uses the BIOS Parameter Block on the
- floppy disk (I think that's the data structure) instead of that horrid,
- kludgy media byte. Thus, it works with (almost) any geometry you can
- manage to format onto a floppy disk. I say almost because it doesn't
- seem to understand double density, double track density (720K) 5.25
- floppy disks -- it looks like it double steps the head as though it
- was single track density.
-
- Of course, such formats are officially "out-of-spec" so IBM evidently
- thinks you shouldn't be able to format such beasts. You must use
- FDFORMAT under DOS (the "real thing," not a VDM).
-
- Larry
- --
- Larry A. Shurr (las@cbnmva.att.com) speaking only for myself.
- Norman, listen carefully. I am lying. Are you sure your circuits are
- registering? Your ears are green. Logic is a little bird singing in a
- meadow. Logic is a wreath of pretty flowers which smell bad! - Mr. Spock
-