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Re: ANNOUNCE: World's First 3.5-inch Flexible Disk Drive Write-up
- Subject: Re: ANNOUNCE: World's First 3.5-inch Flexible Disk Drive Write-up
- From: apple2pd@ground.ecn.uiowa.edu (ground.ecn AppleII Librarian)
- Date: 29 Oct 2002 17:23:34 GMT
- Newsgroups: comp.sys.apple2
- Organization: Iowa Computer Aided Engineering Network, University of Iowa
- References: <xP%u9.215465$U7.60081811@twister.socal.rr.com> <3DBDC47D.2D58FD4F@usa.net>
- Xref: archiver1.google.com comp.sys.apple2:24089
In article <3DBDC47D.2D58FD4F@usa.net>, Jeff Thomas <a2forever@usa.net> wrote:
>Couple of errors here, being:-
>
>Using Central Point Software's Inc, "Universal Disk Controller" card it is
>possible to use external Apple Macintosh 3.5inch 800 Kb & 400 Kb disk drives on
>Apple II. The latter, would be useless because you can't read the disks on newer
>800 kb drives!
>
Perhaps correct with some equipment, but I used to format DSDD 3.5 disks
single-sided (400K) on 800K drives on an AppleII and then used them in
400K drives with a UDC card, and vice-versa. Earlier 800K drives handled
single-sided 400K disks fine (using appleII equipment). I don't recall if
I used 400K disks in a Mac 800K drive with sys6 or sys7. Sys8 or 9
dropped support for 400K disks. I don't know if the super-disk
controller works with 400K disks, but the 800K controllers did.
--Steve
--
--Steve (apple2pd@ground.ecn.uiowa.edu)