OT 3.5" floppy question

G

George Herold

Guest
Hi guys, If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD? (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.) I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success. I also tried putting
some tape on the one corner of the disk to cover up the hole there.

Thanks for any advice,

George H.
 
On Tue, 20 Sep 2011 07:06:46 -0700 (PDT), George Herold
<gherold@teachspin.com> wrote:

Hi guys, If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD? (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.) I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success. I also tried putting
some tape on the one corner of the disk to cover up the hole there.

Thanks for any advice,

George H.
Click to expand...
Your controller has to support double stepping to account for the head
gap difference.
 
On 21/09/2011 12:06 AM, George Herold wrote:
Hi guys, If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD? (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.) I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success. I also tried putting
some tape on the one corner of the disk to cover up the hole there.

Thanks for any advice,

George H.
Click to expand...
Cover the extra hole on the HD floppy disk. All HD floppy DD I have seem
also support DD when feed the appropriate media
 
On Tue, 20 Sep 2011 08:38:44 -0700 (PDT), George Herold
<gherold@teachspin.com> wrote:

On Sep 20, 10:26 am, Tom Biasi <tombi...@optonline.net> wrote:
On Tue, 20 Sep 2011 07:06:46 -0700 (PDT), George Herold

gher...@teachspin.com> wrote:
Hi guys,  If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD?  (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.)  I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success.  I also tried putting
some tape on the one corner of the disk to cover up the hole there.

Thanks for any advice,

George H.

Your controller has to support double stepping to account for the head
gap difference.

Thanks Tom, I rumaged around in my stack of old floppies and found a
720K DD one so my need is less urgent. My computer (disk drive) was
able to format it. Is there anyway to force it to format a HD disk as
DD?

George H.
Click to expand...
As David said, you can cover the extra hole or you can find software
to do it but neither will work if the disk controller won't double
step the heads. The head gap is about half for a HD.
IMO even if you did it the reliability would be in question, the
actual media compositions are different.

Tom
 
On Tue, 20 Sep 2011 07:06:46 -0700 (PDT), George Herold
<gherold@teachspin.com> wrote:

Hi guys, If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD? (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.) I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success. I also tried putting
some tape on the one corner of the disk to cover up the hole there.

Thanks for any advice,
Click to expand...
You already have your solution, so nothing critical now. But
I can make a few apocryphal comments all the same.

The difference used to detect density was a little square
hole. You are obviously already aware of that.

The difference in the drives are physical, though. A DD
drive head writes a wider track than an HD drive will, even
if the HD drive is forced to space the tracks differently in
formatting a DD (or HD used as DD) floppy. The HD floppy
drive has a narrower head and simply cannot write the wide
track fully.

A DD floppy formatted in a DD drive will read just fine in an
HD floppy drive. The HD drive will see the center of the
wide track. However, it is not always the case that a DD
floppy formatted in an HD drive will read properly in another
DD floppy drive. This is because the wider read head in the
DD floppy drive _may_ "see garbage" in the surrounding medium
along with the narrow "good signal" because of its different
read-head geometry.

It is best to use a DD floppy drive system to write DD
floppies, as they will read on both kinds of drives well.

But one does what one must.

Jon
 
On Sep 20, 10:26 am, Tom Biasi <tombi...@optonline.net> wrote:
On Tue, 20 Sep 2011 07:06:46 -0700 (PDT), George Herold

gher...@teachspin.com> wrote:
Hi guys,  If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD?  (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.)  I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success.  I also tried putting
some tape on the one corner of the disk to cover up the hole there.

Thanks for any advice,

George H.

Your controller has to support double stepping to account for the head
gap difference.
Click to expand...
Thanks Tom, I rumaged around in my stack of old floppies and found a
720K DD one so my need is less urgent. My computer (disk drive) was
able to format it. Is there anyway to force it to format a HD disk as
DD?

George H.
 
On Sep 20, 1:14 pm, Jon Kirwan <j...@infinitefactors.org> wrote:
On Tue, 20 Sep 2011 07:06:46 -0700 (PDT), George Herold

gher...@teachspin.com> wrote:
Hi guys,  If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD?  (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.)  I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success.  I also tried putting
some tape on the one corner of the disk to cover up the hole there.

Thanks for any advice,

You already have your solution, so nothing critical now.  But
I can make a few apocryphal comments all the same.

The difference used to detect density was a little square
hole.  You are obviously already aware of that.

The difference in the drives are physical, though.  A DD
drive head writes a wider track than an HD drive will, even
if the HD drive is forced to space the tracks differently in
formatting a DD (or HD used as DD) floppy.  The HD floppy
drive has a narrower head and simply cannot write the wide
track fully.

A DD floppy formatted in a DD drive will read just fine in an
HD floppy drive.  The HD drive will see the center of the
wide track.  However, it is not always the case that a DD
floppy formatted in an HD drive will read properly in another
DD floppy drive.  This is because the wider read head in the
DD floppy drive _may_ "see garbage" in the surrounding medium
along with the narrow "good signal" because of its different
read-head geometry.

It is best to use a DD floppy drive system to write DD
floppies, as they will read on both kinds of drives well.

But one does what one must.

Jon
Click to expand...
Thanks Jon, and others. I recieved instructions via private email on
how to force a DD format. 'format A: /t:80 /N:9' And this worked.
But when I put the formatted floppy into the machine to save data...
it was a mess! As you predicted. Oh well, luckily I have a few DD
disks and that's plenty.

Thanks for all the help and info.

George H.
 
In article <06729fbf-908c-461a-b705-7398af5a97b7@g30g2000yqc.googlegroups.com>,
George Herold <gherold@teachspin.com> wrote:
Hi guys, If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD? (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.) I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success. I also tried putting
some tape on the one corner of the disk to cover up the hole there.
Click to expand...
1) DRIVEPARM in the CONFIG.SYS file extends the /F option with
things like /S (sectors per track).

2) There's an old shareware utility named Anadisk that can read and
write anything (that the hardware can read). It's so tricky that when
I was looked if the author was still around to send them some money, the
latest version was only going to be supplied to police organizations for
forensic uses. (Apparently somebody bad was hiding things on floppys).
Circa 1990-1995 in the Simtel Archive. I think the Simtel archive is
still out there, and it was sold on CD-ROM for quite a while until the
Internet ate that market. (Is Steve Walz's FTP site still up. He
had it).

I used it to read Kaypro-4 disks, followed by a Perl script I wrote to
turn a diskette image to files.

3) Linux. The diskette driver uses the file name (the Minor Device
number in a special file Inode, actually) for the drive parameters,
so the format program shouldn't care as long as the floppy controller
can do it. (New enough to be PC/AT compatible, but not new enough to
be stripped down as was done on newer motherboards).

Mark Zenier mzenier@eskimo.com
Googleproofaddress(account:mzenier provider:eskimo domain:com)
 
On Tue, 20 Sep 2011 11:12:02 -0700 (PDT) George Herold
<gherold@teachspin.com> wrote in Message id:
<c0bcde98-7149-47b2-87b1-23ed83ab8a93@a7g2000yqb.googlegroups.com>:

On Sep 20, 1:14 pm, Jon Kirwan <j...@infinitefactors.org> wrote:
On Tue, 20 Sep 2011 07:06:46 -0700 (PDT), George Herold

gher...@teachspin.com> wrote:
Hi guys,  If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD?  (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.)  I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success.  I also tried putting
some tape on the one corner of the disk to cover up the hole there.

Thanks for any advice,

You already have your solution, so nothing critical now.  But
I can make a few apocryphal comments all the same.

The difference used to detect density was a little square
hole.  You are obviously already aware of that.

The difference in the drives are physical, though.  A DD
drive head writes a wider track than an HD drive will, even
if the HD drive is forced to space the tracks differently in
formatting a DD (or HD used as DD) floppy.  The HD floppy
drive has a narrower head and simply cannot write the wide
track fully.

A DD floppy formatted in a DD drive will read just fine in an
HD floppy drive.  The HD drive will see the center of the
wide track.  However, it is not always the case that a DD
floppy formatted in an HD drive will read properly in another
DD floppy drive.  This is because the wider read head in the
DD floppy drive _may_ "see garbage" in the surrounding medium
along with the narrow "good signal" because of its different
read-head geometry.

It is best to use a DD floppy drive system to write DD
floppies, as they will read on both kinds of drives well.

But one does what one must.

Jon

Thanks Jon, and others. I recieved instructions via private email on
how to force a DD format. 'format A: /t:80 /N:9' And this worked.
But when I put the formatted floppy into the machine to save data...
it was a mess! As you predicted. Oh well, luckily I have a few DD
disks and that's plenty.

Thanks for all the help and info.
Click to expand...
You might want to try bulk erasing the disk before formatting.
 
On Sep 21, 5:55 am, JW <n...@dev.null> wrote:
On Tue, 20 Sep 2011 11:12:02 -0700 (PDT) George Herold
gher...@teachspin.com> wrote in Message id:
c0bcde98-7149-47b2-87b1-23ed83ab8...@a7g2000yqb.googlegroups.com>:





On Sep 20, 1:14 pm, Jon Kirwan <j...@infinitefactors.org> wrote:
On Tue, 20 Sep 2011 07:06:46 -0700 (PDT), George Herold

gher...@teachspin.com> wrote:
Hi guys, If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD? (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.) I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success. I also tried putting
some tape on the one corner of the disk to cover up the hole there.

Thanks for any advice,

You already have your solution, so nothing critical now. But
I can make a few apocryphal comments all the same.

The difference used to detect density was a little square
hole. You are obviously already aware of that.

The difference in the drives are physical, though. A DD
drive head writes a wider track than an HD drive will, even
if the HD drive is forced to space the tracks differently in
formatting a DD (or HD used as DD) floppy. The HD floppy
drive has a narrower head and simply cannot write the wide
track fully.

A DD floppy formatted in a DD drive will read just fine in an
HD floppy drive. The HD drive will see the center of the
wide track. However, it is not always the case that a DD
floppy formatted in an HD drive will read properly in another
DD floppy drive. This is because the wider read head in the
DD floppy drive _may_ "see garbage" in the surrounding medium
along with the narrow "good signal" because of its different
read-head geometry.

It is best to use a DD floppy drive system to write DD
floppies, as they will read on both kinds of drives well.

But one does what one must.

Jon

Thanks Jon, and others.  I recieved instructions via private email on
how to force a DD format.  'format A: /t:80 /N:9'  And this worked.
But when I put the formatted floppy into the machine to save data...
it was a mess!  As you predicted.  Oh well, luckily I have a few DD
disks and that's plenty.

Thanks for all the help and info.

You might want to try bulk erasing the disk before formatting.- Hide quoted text -

- Show quoted text -
Click to expand...
Thanks JW, Actually the 'trick' did work the second time. (The first
time I yanked the disk out before DOS had finished writing the volume
label... oops) It's been sooooo long since I've used DOS. In some
ways I really miss it, you had a feeling that you understood what the
OS was doing.

George H.
 
On Tue, 20 Sep 2011 19:13:55 GMT, mzenier@eskimo.com (Mark Zenier)
wrote:

In article <06729fbf-908c-461a-b705-7398af5a97b7@g30g2000yqc.googlegroups.com>,
George Herold <gherold@teachspin.com> wrote:
Hi guys, If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD? (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.) I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success. I also tried putting
some tape on the one corner of the disk to cover up the hole there.

1) DRIVEPARM in the CONFIG.SYS file extends the /F option with
things like /S (sectors per track).

2) There's an old shareware utility named Anadisk that can read and
write anything (that the hardware can read). It's so tricky that when
I was looked if the author was still around to send them some money, the
latest version was only going to be supplied to police organizations for
forensic uses. (Apparently somebody bad was hiding things on floppys).
Circa 1990-1995 in the Simtel Archive. I think the Simtel archive is
still out there, and it was sold on CD-ROM for quite a while until the
Internet ate that market. (Is Steve Walz's FTP site still up. He
had it).

I used it to read Kaypro-4 disks, followed by a Perl script I wrote to
turn a diskette image to files.

3) Linux. The diskette driver uses the file name (the Minor Device
number in a special file Inode, actually) for the drive parameters,
so the format program shouldn't care as long as the floppy controller
can do it. (New enough to be PC/AT compatible, but not new enough to
be stripped down as was done on newer motherboards).

Mark Zenier mzenier@eskimo.com
Googleproofaddress(account:mzenier provider:eskimo domain:com)
Click to expand...
Mark, where the hell have you been, I haven't seen a post from you in
years.

Tom
 
George Herold wrote:

Hi guys, If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD? (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.) I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success. I also tried putting
some tape on the one corner of the disk to cover up the hole there.

Thanks for any advice,

Why do you want to format HD disks as DD?
Click to expand...

Thanks,
Rich
 
George Herold wrote:

Hi guys, If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD? (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.) I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success. I also tried putting
some tape on the one corner of the disk to cover up the hole there.

Thanks for any advice,

Have you tried
format a: /F:720
?
Click to expand...

I got that from:

DOS>help format
Formats a disk for use with Windows 2000.

FORMAT volume [/FS:file-system] [/V:label] [/Q] [/A:size] [/C] [/X]
FORMAT volume [/V:label] [/Q] [/F:size]
FORMAT volume [/V:label] [/Q] [/T:tracks /N:sectors]
FORMAT volume [/V:label] [/Q] [/1] [/4]
FORMAT volume [/Q] [/1] [/4] [/8]

volume Specifies the drive letter (followed by a colon),
mount point, or volume name.
/FS:filesystem Specifies the type of the file system (FAT, FAT32, or
NTFS).
/V:label Specifies the volume label.
/Q Performs a quick format.
/C Files created on the new volume will be compressed by
default.
/X Forces the volume to dismount first if necessary. All
opened
handles to the volume would no longer be valid.
/A:size Overrides the default allocation unit size. Default
settings
are strongly recommended for general use.
NTFS supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K.
FAT supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K,
(128K, 256K for sector size > 512 bytes).
FAT32 supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K,
(128K, 256K for sector size > 512 bytes).

Note that the FAT and FAT32 files systems impose the
following restrictions on the number of clusters on a
volume:

FAT: Number of clusters <= 65526
FAT32: 65526 < Number of clusters < 268435446

Format will immediately stop processing if it decides that
the above requirements cannot be met using the specified
cluster size.

NTFS compression is not supported for allocation unit
sizes
above 4096.
/F:size Specifies the size of the floppy disk to format (160,
180, 320, 360, 640, 720, 1.2, 1.23, 1.44, 2.88, or 20.8).
/T:tracks Specifies the number of tracks per disk side.
/N:sectors Specifies the number of sectors per track.
/1 Formats a single side of a floppy disk.
/4 Formats a 5.25-inch 360K floppy disk in a
high-density drive.
/8 Formats eight sectors per track.
DOS>

Hope This Helps!
Rich
 
Rich Grise wrote:
George Herold wrote:

Hi guys, If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD? (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.) I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success. I also tried putting
some tape on the one corner of the disk to cover up the hole there.

Thanks for any advice,

Why do you want to format HD disks as DD?

Thanks,
Rich

Speaking for me, I need 720k floppys to transfer between an arc310
Click to expand...
risc pc, an a dos/win machine.
The arc computer knows only 720 k format.
 
Rich Grise submitted this idea :
George Herold wrote:

Hi guys, If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD? (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.) I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success. I also tried putting
some tape on the one corner of the disk to cover up the hole there.

Thanks for any advice,

Why do you want to format HD disks as DD?

Thanks,
Rich
Click to expand...
I too would be interested in the reason George needs them.

My daughter has a multi head commercial Embroidary machine where the
only conection to the computer prog to drive it is via 720kb diskettes.
She swears as soon as she can afford a new machine it will at least be
ethernet or maybe wifi.

--
John G.
 
On Sep 21, 5:49 pm, Rich Grise <ri...@example.net.invalid> wrote:
George Herold wrote:
Hi guys,  If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD?  (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.)  I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success.  I also tried putting
some tape on the one corner of the disk to cover up the hole there.

Thanks for any advice,

Have you tried
format a: /F:720

?

I got that from:

DOS>help format
Formats a disk for use with Windows 2000.

FORMAT volume [/FS:file-system] [/V:label] [/Q] [/A:size] [/C] [/X]
FORMAT volume [/V:label] [/Q] [/F:size]
FORMAT volume [/V:label] [/Q] [/T:tracks /N:sectors]
FORMAT volume [/V:label] [/Q] [/1] [/4]
FORMAT volume [/Q] [/1] [/4] [/8]

  volume          Specifies the drive letter (followed by a colon),
                  mount point, or volume name.
  /FS:filesystem  Specifies the type of the file system (FAT, FAT32, or
NTFS).
  /V:label        Specifies the volume label.
  /Q              Performs a quick format.
  /C              Files created on the new volume will be compressed by
                  default.
  /X              Forces the volume to dismount first if necessary.  All
opened
                  handles to the volume would no longer be valid.
  /A:size         Overrides the default allocation unit size. Default
settings
                  are strongly recommended for general use.
                  NTFS supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K.
                  FAT supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K,
                  (128K, 256K for sector size > 512 bytes).
                  FAT32 supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K,
                  (128K, 256K for sector size > 512 bytes).

                      Note that the FAT and FAT32 files systems impose the
                  following restrictions on the number of clusters on a
volume:

                  FAT: Number of clusters <= 65526
                  FAT32: 65526 < Number of clusters < 268435446

                  Format will immediately stop processing if it decides that
                  the above requirements cannot be met using the specified
                  cluster size.

                  NTFS compression is not supported for allocation unit
sizes
                  above 4096.
  /F:size         Specifies the size of the floppy disk to format (160,
                  180, 320, 360, 640, 720, 1.2, 1.23, 1..44, 2.88, or 20.8).
  /T:tracks       Specifies the number of tracks per disk side.
  /N:sectors      Specifies the number of sectors per track.
  /1              Formats a single side of a floppy disk.
  /4              Formats a 5.25-inch 360K floppy disk in a
                  high-density drive.
  /8              Formats eight sectors per track.
DOS

Hope This Helps!
Rich
Click to expand...
Thanks Rich I did try that, I've got some XP operating system, when
I ran the above the only /F:size option was 1.44, all others were...
bad command... or whatever the error message is.

George H.
 
George Herold wrote:
On Sep 21, 5:49 pm, Rich Grise <ri...@example.net.invalid> wrote:
George Herold wrote:
Hi guys,  If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD?
Have you tried
format a: /F:720

Thanks Rich I did try that, I've got some XP operating system, when
I ran the above the only /F:size option was 1.44, all others were...
bad command... or whatever the error message is.
Click to expand...
Aw. Well, you can't say I didn't try. :)

Good Luck!
Rich
 
On Sep 21, 6:50 pm, John G <greent...@ozemail.com.au> wrote:
Rich Grise submitted this idea :

George Herold wrote:

Hi guys,  If you want to direct me to a different group that is fine..
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD?  (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.)  I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success.  I also tried putting
some tape on the one corner of the disk to cover up the hole there.

Thanks for any advice,

Why do you want to format HD disks as DD?

Thanks,
Rich

I too would be interested in the reason George needs them.

My daughter has a multi head commercial Embroidary machine where the
only conection to the computer prog to drive it is via 720kb diskettes.
She swears as soon as she can afford a new machine it will at least be
ethernet or maybe wifi.

--
John G.
Click to expand...
Yup an old machine. SRS 770 FFT spectrum analyzer. I'll post some
pics of the third harmonic distortion from a Wien-bridge oscillator.
It's right down in the dirt.... and weird looking.

Tell your daughter that old technology is cool too.

George H.
 
On Tue, 20 Sep 2011 19:13:55 GMT mzenier@eskimo.com (Mark Zenier) wrote in
Message id: <j5d0te02r47@enews6.newsguy.com>:

In article <06729fbf-908c-461a-b705-7398af5a97b7@g30g2000yqc.googlegroups.com>,
George Herold <gherold@teachspin.com> wrote:
Hi guys, If you want to direct me to a different group that is fine.
I'm wondering if there is a way to format a HD 3.5" floppy to be only
DD? (HD is high desinity 1.44MB and DD is double density ~720kB, for
those of tender years.) I've been mucking about in DOS trying the
"format a: /F:(size)" command with out success. I also tried putting
some tape on the one corner of the disk to cover up the hole there.

1) DRIVEPARM in the CONFIG.SYS file extends the /F option with
things like /S (sectors per track).

2) There's an old shareware utility named Anadisk that can read and
write anything (that the hardware can read). It's so tricky that when
I was looked if the author was still around to send them some money, the
latest version was only going to be supplied to police organizations for
forensic uses. (Apparently somebody bad was hiding things on floppys).
Circa 1990-1995 in the Simtel Archive. I think the Simtel archive is
still out there, and it was sold on CD-ROM for quite a while until the
Internet ate that market. (Is Steve Walz's FTP site still up. He
had it).

I used it to read Kaypro-4 disks, followed by a Perl script I wrote to
turn a diskette image to files.
Click to expand...
Another great program that's still being worked on is Omniflop.
http://www.shlock.co.uk/Utils/OmniFlop/OmniFlop.htm

I use it for reading and writing HP LIF formats.
 
In article <e6fk77d8j37ctrq3qoqjfvhj9rl1aa1133@4ax.com>,
Tom Biasi <tombiasi@optonline.net> wrote:
Mark, where the hell have you been, I haven't seen a post from you in
years.
Click to expand...
The science fiction and shortwave radio groups, mostly. By the time
I get around to the electronics groups, the questions I can answer
already have been...

Mark Zenier mzenier@eskimo.com
Googleproofaddress(account:mzenier provider:eskimo domain:com)
 
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