Tech Support > Computer Hardware > Storage Devices > DReading a QRST5 720KB 3.5" Disk Image
DReading a QRST5 720KB 3.5" Disk Image
Posted by vjp2.at@at.BioStrategist.dot.dot.com on January 13th, 2008



I have a program which needs to be written on a 720KD 3.5" Floppy
with qrst5 in order to work. I ordered some such floppies, but am in a
hurry and would rather do a software fix. Any tricks for reading such
an image so I can get to work?

- = -
Vasos Panagiotopoulos, Columbia'81+, Reagan, Mozart, Pindus, BioStrategist
http://ourworld.compuserve.com/homepages/vjp2/vasos.htm
---{Nothing herein constitutes advice. Everything fully disclaimed.}---
[Homeland Security means private firearms not lazy obstructive guards]
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Posted by Arno Wagner on January 13th, 2008


In comp.sys.ibm.pc.hardware.storage vjp2.at@at.biostrategist.dot.dot.com wrote:

Depends. Under linux you can do a loopback mount. An other fix is to
down-format a 1.44 floppy disk.

Arno

Posted by pcbldrNinetyEight on January 13th, 2008


vjp2.at@at.BioStrategist.dot.dot.com wrote in
news:fmc1vn$lvp$1@reader2.panix.com:

File Manager (Winfile.exe) can format a standard 3.5" floppy to 720KB.

--
pcbldrNinetyEight

Posted by Todd Vargo on January 13th, 2008


vjp2.at@at.BioStrategist.dot.dot.com wrote:
You can format a 1.44MB as 720KB using FORMAT

FORMAT A: /F:720

However, if you already have an image file, disk imaging programs can write
a 720 image to a 1.44 disk with no problems. I use WinImage to do that.

--
Todd Vargo
(Post questions to group only. Remove "z" to email personal messages)


--
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Posted by John Dulak on January 13th, 2008


vjp2.at@at.BioStrategist.dot.dot.com wrote:
All you have to do is put some tape over the hole in corner of a 1.4
Meg floppy and the drive will treat it as if it was a 720 Kb floppy.

NOTE: the hole in the corner of a floppy case with a sliding cover is
the "Write Protect" hole; you need to cover the hole in the other
corner to emulate a 720 KB floppy. Some drives detect this with an LED
and almost any covering of the hole will work. Other drives use a
mechanical switch so you would need a fairly stiff cover, like several
layers of tape.

HTH & GL

John

--
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'' Madness takes its toll - Please have exact change. ''

John Dulak - Gnomeway Services - http://tinyurl.com/2qs6o6

Posted by Arno Wagner on January 14th, 2008


In comp.sys.ibm.pc.hardware.storage John Dulak <Johnd@boogus.com> wrote:
That is a veryu bad idea. 1.44M and 720M floppies use different
signal strengths. You will end up with a floppy that may be
unreadable very fast.

Arno

Posted by 231 on January 14th, 2008


Arno Wagner <me@privacy.net> wrote:
Nope, not when the OP wanted a quick and dirty workaround while waiting for the correct media.



Posted by Esra Sdrawkcab on January 14th, 2008


231 wrote:
Disagree - if it is a "virgin" disk it should be fine; the problems only
occurred when converting one formatted to 1 size to another (I think LD
to HD but IMWBW and even then I feel this applied only to 5.25" (genuine
floppy!) disks).


(order of quoting fixed)

Posted by 231 on January 14th, 2008


Esra Sdrawkcab <admin@127.0.0.1> wrote
Your problem...

You're massively confusing what happens with 5¼" floppys with what happens with 3½" floppys.

OJYFR

Your anal obsessions are your problem.



Posted by John Turco on January 16th, 2008


231 wrote:

Hello, Rod:

Okay, what I >really< want to know, is...what the hell does "IMWBW"
stand for, anyway? :-)


Cordially,
John Turco <jtur@concentric.net>

Posted by Rod Speed on January 16th, 2008


John Turco <jtur@concentric.net> wrote:
If I told you that I'd have to kill you. And even you wouldnt want that.

And stop that smirking, this is no laughing matter, boy.



Posted by John Turco on January 20th, 2008


Rod Speed wrote:
<edited for brevity>


Hello, Rod:

Can't you spare this lowly Yank, even a mere hint, please? <g>


Cordially,
John Turco <jtur@concentric.net>

Posted by Rod Speed on January 20th, 2008


John Turco <jtur@concentric.net> wrote
KIRRD



Posted by John Turco on January 22nd, 2008


Rod Speed wrote:

Hello, Rod:

Okay, I give up! :-J


Cordially,
John Turco <jtur@concentric.net>


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