29 May
2001
29 May
'01
3:52 p.m.
Hi,
now that I have my old C64 setup back I found that I could not
format newer 5.25" HD disks on the 1541 or 1571. It just bumps
and blinks and stops. Does the 1541 require hard sectored disk?
I don't think so, because I can still remember today that my first
disk ever said "BASF Flexi Disk, 5.25", Singled Side, Double
Density, Soft Sector." So what's the trick to get media working?
Bulk eraser? (BTW: It's been over 15 years and I still have that
disk and could actually read one side of it, that's fun!)
thanks
-Gunther
--
Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org
Medical Information Scientist Regenstrief Institute for Health Care
Adjunct Assistant Professor Indiana University School of Medicine
tel:1(317)630-7960 http://aurora.regenstrief.org
29 May
29 May
4:02 p.m.
I never tried HD disks in a 1541, but I know the magnetic properties
of HD disks are different and require a different head to read and
write effectively. I'd say scratch about and find some DD disks
if you can.
Hi,
now that I have my old C64 setup back I found that I could not
format newer 5.25" HD disks on the 1541 or 1571. It just bumps
and blinks and stops. Does the 1541 require hard sectored disk?
I don't think so, because I can still remember today that my first
disk ever said "BASF Flexi Disk, 5.25", Singled Side, Double
Density, Soft Sector." So what's the trick to get media working?
Bulk eraser? (BTW: It's been over 15 years and I still have that
disk and could actually read one side of it, that's fun!)
thanks
-Gunther
--
Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org
Medical Information Scientist Regenstrief Institute for Health Care
Adjunct Assistant Professor Indiana University School of Medicine
tel:1(317)630-7960 http://aurora.regenstrief.org
--
Jim Strickland
jim(a)DIESPAMMERSCUMcalico.litterbox.com
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4:45 p.m.
now that I have my old C64 setup back I found that I
could not
format newer 5.25" HD disks on the 1541 or 1571. It just bumps
and blinks and stops. Does the 1541 require hard sectored disk?
No, but it requires DD. HD will not work.
--
----------------------------- personal page: http://www.armory.com/~spectre/ --
Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu
-- TODAY'S DUMB TRUE HEADLINE: Cold Wave Linked To Temperatures ---------------
5:21 p.m.
Might be that they come preformatted now and magnetic erasing is the best
option. Your dirve may be getting dirty too and the newer tighter oxides
aren't as easily read. I would guess the bulk erasing would be your next
troubleshooting step though.
-----Original Message-----
From: owner-classiccmp(a)classiccmp.org
[mailto:owner-classiccmp@classiccmp.org]On Behalf Of Gunther Schadow
Sent: Tuesday, May 29, 2001 10:53 PM
To: classiccmp(a)classiccmp.org
Subject: New HD disks not working in 1541?
Hi,
now that I have my old C64 setup back I found that I could not
format newer 5.25" HD disks on the 1541 or 1571. It just bumps
and blinks and stops. Does the 1541 require hard sectored disk?
I don't think so, because I can still remember today that my first
disk ever said "BASF Flexi Disk, 5.25", Singled Side, Double
Density, Soft Sector." So what's the trick to get media working?
Bulk eraser? (BTW: It's been over 15 years and I still have that
disk and could actually read one side of it, that's fun!)
thanks
-Gunther
--
Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org
Medical Information Scientist Regenstrief Institute for Health Care
Adjunct Assistant Professor Indiana University School of Medicine
tel:1(317)630-7960 http://aurora.regenstrief.org
6:12 p.m.
New HD disks not working in 1541?
That's right. HD disks don't work in 1541.
If you want disks that will work right in 1541, you need "DOUBLE
DENSITY" (300 Oerstedt) disks, NOT "HIGH DENSITY" (600 Oerstedt)
Magnetic coercivity is analogous to photographic film sensitivity. Using
the wrong sensitivity won't work right, even if somebody tells you that
one is "better" than another one.
--
Grumpy Ol' Fred cisin(a)xenosoft.com
30 May
30 May
5:34 a.m.
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6:23 a.m.
Rumor has it that Gunther Schadow may have mentioned these words:
Hi,
now that I have my old C64 setup back I found that I could not
format newer 5.25" HD disks on the 1541 or 1571. It just bumps
and blinks and stops. Does the 1541 require hard sectored disk?
I don't think so, because I can still remember today that my first
disk ever said "BASF Flexi Disk, 5.25", Singled Side, Double
Density, Soft Sector." So what's the trick to get media working?
Bulk eraser? (BTW: It's been over 15 years and I still have that
disk and could actually read one side of it, that's fun!)
Gunther,
HD disks AFAIK won't work at all in any DD drive - the TPI (Tracks Per
Inch) are different. DD disks are 48TPI, HD disks are 96TPI. You need to
find DSDD (or at least SSDD if the drive is SS) to be used on your 1541 or
1571.
(Some SS disks might work for DS - I used to punch SS disks and turn them
into "flippy" disks for the Apple & Tandy computers - many company's
disks
would "work" DS, they weren't verified or guaranteed for DS, however...)
HTH,
Roger "Merch" Merchberger
--
Roger "Merch" Merchberger --- sysadmin, Iceberg Computers
Recycling is good, right??? Ok, so I'll recycle an old .sig.
If at first you don't succeed, nuclear warhead
disarmament should *not* be your first career choice.
8:53 a.m.
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ard＠p850ug1.demon.co.uk -
cisin＠xenosoft.com -
gunther＠aurora.regenstrief.org -
jim＠calico.litterbox.com -
rhblake＠bigfoot.com -
spectre＠stockholm.ptloma.edu -
zmerch＠30below.com