[comp.sys.apple] 1.44M disks

GREYELF@WPI.BITNET (02/09/89)

Have you checked your prices on blank media yet?
1.44 Meg disks have twice the storage capacity, but
about $80 for a box of 10, as opposed to $20 for 10
for normal 3.5 disks.

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SEWALL@UCONNVM.BITNET (Murph Sewall) (02/09/89)

>Have you checked your prices on blank media yet?
>1.44 Meg disks have twice the storage capacity, but
>about $80 for a box of 10, as opposed to $20 for 10
>for normal 3.5 disks.

Depending on your nerve (and willingnes to back up what you really can't
afford to lose) use the $20 disks (we do on our PS/2's all the time, and
except for the 1 in 30 or 40 that refuses to format at the higher
density, we haven't had any problems).

Remember in the "old days" (5 or 6 years ago :-) using the reverse
side of "single sided diskettes?"  The only difference between the DD
and the HD (besides the price of course) is the warranty (have you EVER
sent a disk back and claimed a refund because the disk didn't meet
warranty specs???? ;-)

Murph Sewall                       Vaporware? ---> [Gary Larson returns 1/1/90]
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mithomas@bsu-cs.UUCP (Michael Thomas Niehaus) (02/10/89)

In article <8902090912.aa19304@SMOKE.BRL.MIL>, SEWALL@UCONNVM.BITNET (Murph Sewall) writes:
> >Have you checked your prices on blank media yet?
> >1.44 Meg disks have twice the storage capacity, but
> >about $80 for a box of 10, as opposed to $20 for 10
> >for normal 3.5 disks.
> 
> Depending on your nerve (and willingnes to back up what you really can't
> afford to lose) use the $20 disks (we do on our PS/2's all the time, and
> except for the 1 in 30 or 40 that refuses to format at the higher
> density, we haven't had any problems).
> 
> Remember in the "old days" (5 or 6 years ago :-) using the reverse
> side of "single sided diskettes?"  The only difference between the DD
> and the HD (besides the price of course) is the warranty (have you EVER
> sent a disk back and claimed a refund because the disk didn't meet
> warranty specs???? ;-)
> 
> Murph Sewall                       Vaporware? ---> [Gary Larson returns 1/1/90]

You had better be careful here.  First of all, a 1M disk formatted to the
density of a 2M disk will fail much more often, so you had better keep good
backups.  Secondly, Apple's new 1.44M drive does not just blindly format a
disk: it looks to see if there are one or two write-protect notches in the
disk.  If there are two (which you will notice is standard on a 2M disk) it
will allow formatting as a 1.44M disk; if there is only one, it will only
format it at 800K.  The same type deal holds for MS-DOS 1.44M disks.  If you
try to insert a 720K disk formatted at 1.44M into an Apple SuperDrive to
be read by Apple File Exchange, it will not work.

Just a warning...

Michael Niehaus
Apple Student Rep
Ball State University
UUCP: ..!{pur-ee,iuvax}!bsu-cs!mithomas
AppleLink: ST0374

gwyn@smoke.BRL.MIL (Doug Gwyn ) (02/10/89)

In article <8902081737.AA03755@wpi> GREYELF@WPI.BITNET writes:
-Have you checked your prices on blank media yet?
-1.44 Meg disks have twice the storage capacity, but
-about $80 for a box of 10, as opposed to $20 for 10
-for normal 3.5 disks.

The price will of course come down, just as it always has.

bird@ihlpf.ATT.COM (Walters) (02/11/89)

From article <9635@smoke.BRL.MIL>, by gwyn@smoke.BRL.MIL (Doug Gwyn ):
> In article <8902081737.AA03755@wpi> GREYELF@WPI.BITNET writes:
> -Have you checked your prices on blank media yet?
> -1.44 Meg disks have twice the storage capacity, but
> -about $80 for a box of 10, as opposed to $20 for 10
> -for normal 3.5 disks.

I'm surprised that no one has commented about the $20/10 disks
statement. MEI has been offering 3.5" disks for .79 ea in lots of
25 for some time (some shipping charges are added, not much). If
anyone wants to check them out, the number is 1-800-634-3478. If
you order, you will get a flyer/catalog that lists exceptional
prices for 5.25" disks, printer ribbons, etc.

Usual disclaimer - not my dad, uncle, ...

-- 
				Joe Walters att!ihlpf!bird   
				IHP 1F-240 (312) 416-5356

tmurphy@wpi.wpi.EDU ("Tom [Chris] Murphy") (02/12/89)

>Have you checked your prices on blank media yet?
>1.44 Meg disks have twice the storage capacity, but
>about $80 for a box of 10, as opposed to $20 for 10
>for normal 3.5 disks.

Have YOU checked media prices lately?  The going rate for 1.44s is about
$38, and 720s about $14.  These were Sony disks, as I recall.  
The only place I see prices like the ones you state are office
supply places, which traditionally charge far too much.

________________________________________________________________
Thomas C. Murphy         Worcester Polytechnic Institute CAD Lab
	 		      Mechanical Engineering Dept.

Internet:   tmurphy@zaphod.wpi.edu
            tmurphy@wpi.wpi.edu
BITNET:     TMURPHY@WPI
CompuServe: 73766,130

david@jc3b21.UUCP (David Quarles) (02/12/89)

From article <7672@ihlpf.ATT.COM>, by bird@ihlpf.ATT.COM (Walters):
> I'm surprised that no one has commented about the $20/10 disks
> statement. MEI has been offering 3.5" disks for .79 ea in lots of
> 25 for some time (some shipping charges are added, not much). If
> anyone wants to check them out, the number is 1-800-634-3478. If
> you order, you will get a flyer/catalog that lists exceptional
> prices for 5.25" disks, printer ribbons, etc.
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
I understand the failure rate on these is pretty high ... 
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Dave =-=-=-=-=-=-=-=-=-=-= EOT

bird@ihlpf.ATT.COM (Walters) (02/13/89)

>> MEI has been offering 3.5" disks for .79 ea in lots of
>> 25 for some time (some shipping charges are added, not much)...
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> I understand the failure rate on these is pretty high ... 
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Dave =-=-=-=-=-=-=-=

I've used there 5.25 disks for two years and had perhaps 2 failures
out of hundreds of disks. In this area I know a large number
of people that use them. Totally, they  have ordered thousands and
none have ever commented to me about any sort of failure rate,
abnormal or otherwise. Since I just got my first shipment of 3.5
and can't comment except to say that as of now I have copied data to 50
and have experienced no errors. In any case, the disks are
warranted for life so if you should receive a bad batch, just call
them and they will have you send them back. 
-- 
				Joe Walters att!ihlpf!bird   
				IHP 1F-240 (312) 416-5356

tomg@deceds.dec.com (Tom Gallo) (02/13/89)

I guess I musta missed it. Is there any apple // compatible 1.44m 
3.5 drive available now?

Tom Gallo
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shawn@pnet51.cts.com (Shawn Stanley) (02/14/89)

SEWALL@UCONNVM.BITNET (Murph Sewall) writes:
>Remember in the "old days" (5 or 6 years ago :-) using the reverse
>side of "single sided diskettes?"  The only difference between the DD
>and the HD (besides the price of course) is the warranty (have you EVER
>sent a disk back and claimed a refund because the disk didn't meet
>warranty specs???? ;-)

I've used many single-sided disks as double-sided disks, but most of my
efforts to use double-sided disks as high-density disks have met with failure.
Generally, if I didn't have problems formatting the disks, I had problems
reading/writing the disks after a period of time.  (This was with both 3.5"
and 5.25" disks.)

BTW, I noticed that while you can generally use a good single-sided 5.25" disk
as a double-sided disk, using a single-sided 3.5" disk as a double-sided disk
doesn't work nearly as well.

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INET: shawn@pnet51.cts.com

halp@TCGOULD.TN.CORNELL.EDU ("Bruce P. Halpern") (02/14/89)

I've been using MEI 3.5" disks for Apple //, Mac, and IBM for some time. No
failures.

However, I using them at their RATED capacity, i.e., 800 Kb for Apple and Mac,
720Kb on IBM.

****DISCLAMER: My comments, etc., are my own shakey opinions ********



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tron@wpi.wpi.edu (Richard G Brewer) (02/14/89)

In article <645@orbit.UUCP> shawn@pnet51.cts.com (Shawn Stanley) writes:
>BTW, I noticed that while you can generally use a good single-sided 5.25" disk
>as a double-sided disk, using a single-sided 3.5" disk as a double-sided disk
>doesn't work nearly as well.

Funny - my Mac SE and  Plus (at home) have had no problems with the 40+ single
sided initialized as double sided have no problems at all...

-Rick

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tron@wpi.wpi.edu (Richard G Brewer) (02/14/89)

In article <800@wpi.wpi.edu> tron@wpi.wpi.edu (Richard G Brewer) writes:
>Funny - my Mac SE and  Plus (at home) have had no problems with the 40+ single
>sided initialized as double sided have no problems at all...
>
>-Rick

Although my english seems to have a few problems at the moment...

-Rick

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david@jc3b21.UUCP (David Quarles) (02/15/89)

From article <7683@ihlpf.ATT.COM>, by bird@ihlpf.ATT.COM (Walters):
>>> MEI has been offering 3.5" disks for .79 ea in lots of
>>> 25 for some time (some shipping charges are added, not much)...
>> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>> I understand the failure rate on these is pretty high ... 
>> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Dave =-=-=-=-=-=-=-=
> 
> I've used there 5.25 disks for two years and had perhaps 2 failures
> out of hundreds of disks. 

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
SOMEONE POSTED A SUMMARY here a while back and reported that these disks
while said they were 800k would not always format to 800k and that some
even had trouble formatting to 400k.

This is why I commented on this.  PERHAPS THE PERSON who reported this
originally could respond to this.  Apparently, several people have had
NO problem with this source.
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Dave =-=-=-=-=-=-=-=-=-=-= EOT