18 Sep
2003
18 Sep
'03
8:45 a.m.
I know the Apple II series used something like 140k single sided floppies.
What is a compatible substitute? Double Sided Double Density? I would
assume side count doesn't matter and in fact DS might be be preferable as
then I can just notch the other side and safely flip the disk.
But what about density? I know in 3.5 disks, you can't safely interchange
DD and HD disks and expect them to work for long. But what about with
5.25 disks? Can I use DD or even HD disks with an Apple II?
Again this is so I make sure I keep a healthy supply of floppies when I
am done cleaning house (I have a case of 5.25 disks also to get rid of,
and they are a mix of DSDD and DSHD).
-chris
<http://www.mythtech.net>
18 Sep
18 Sep
10:01 a.m.
But what about density? I know in 3.5 disks, you
can't safely interchange
DD and HD disks and expect them to work for long. But what about with
5.25 disks? Can I use DD or even HD disks with an Apple II?
I don't know the specs of the disk ][ drive head, but I do know that, for
example, the Commodore 1541 and 1571 drives object to HD disks because they
lack the proper magnetic properties. They only tolerate DD. I would expect
disk ]['s to dislike HD as well.
--
---------------------------------- personal: http://www.armory.com/~spectre/ --
Cameron Kaiser, Floodgap Systems Ltd * So. Calif., USA * ckaiser(a)floodgap.com
-- Good times, noodle salad. -- "As Good As It Gets" --------------------------
2:36 p.m.
> But what about density? I know in 3.5 disks, you
can't safely interchange
> DD and HD disks and expect them to work for long. But what about with
> 5.25 disks? Can I use DD or even HD disks with an Apple II?
5.25" DD and HD diskettes are significantly LESS interchangable than DD/HD
3.5"!
3.5" DD and HD diskettes are 600 and 7xx Oerstedts respectively, and are
close enough to ALMOST work reliably.
5.25" are 300 and 600, and are far enough apart to thoroughly NOT WORK
RIGHT!
On Thu, 18 Sep 2003, Cameron Kaiser wrote:
I don't know the specs of the disk ][ drive head,
but I do know that, for
The original disk ][ used a Shugart SA390 drive, which has the same
head as the Shugart SA400. It wants a 300 Oersted diskette.
The "NEW" drives have the same media spec, but I have no idea what drive
they use.
example, the Commodore 1541 and 1571 drives object to
HD disks because they
lack the proper magnetic properties. They only tolerate DD. I would expect
disk ]['s to dislike HD as well.
RIGHT
11:41 a.m.
On Thu, 18 Sep 2003, chris wrote:
I know the Apple II series used something like 140k
single sided floppies.
140K per side.
But what about density? I know in 3.5 disks, you
can't safely interchange
DD and HD disks and expect them to work for long. But what about with
5.25 disks? Can I use DD or even HD disks with an Apple II?
HD disks do not work in Apple ][ drives.
Apple drives are OK with single density or double density disks, and you
can notch single-sided disks to make them double-sided. The Apple is easy
when it comes to disks.
--
Sellam Ismail Vintage Computer Festival
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1:38 p.m.
I know the Apple II series used something like 140k
single sided floppies.
What is a compatible substitute? Double Sided Double Density? I would
assume side count doesn't matter and in fact DS might be be preferable as
then I can just notch the other side and safely flip the disk.
DS/DD is fine.
But what about density? I know in 3.5 disks, you
can't safely interchange
DD and HD disks and expect them to work for long. But what about with
5.25 disks? Can I use DD or even HD disks with an Apple II?
Don't use HD (1.2M), they won't work reliably. Stick to DD (typically
called 360K in recent years). "QD" (96 TPI DD) will also work fine.
7:11 p.m.
I know the Apple II series used something like 140k
single sided floppies.
What is a compatible substitute? Double Sided Double Density? I would
assume side count doesn't matter and in fact DS might be be preferable as
then I can just notch the other side and safely flip the disk.
But what about density? I know in 3.5 disks, you can't safely interchange
DD and HD disks and expect them to work for long. But what about with
5.25 disks? Can I use DD or even HD disks with an Apple II?
You can use DD disks (you can always use DD in place of SD on any machine
-- the media is the same spec, just better). You can't use HD disks --
the media has a higher coercivity and can't be written to properly.
-tony
7782
days inactive
7782
days old
5 comments
6 participants
participants (6)
-
ard＠p850ug1.demon.co.uk -
cb＠mythtech.net -
cisin＠xenosoft.com -
eric＠brouhaha.com -
spectre＠floodgap.com -
vcf＠siconic.com