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'Starange' diskettes

L

Luke

Experienced Member
Joined
Apr 3, 2006
Messages
418
Location
Poland
I recived about 100 diskettes:

- 5 diskettes UNISYS, one of 'em have label:

BTOS/CTOS PROT MODE BOOT DISK
CHAR/GC003 VIDEO

- 15 diskettes DESC, title on one of 'em:

BTOS SYSTEMS 27080/3780 RJE

- about 60 disks with *.COB files, on few there is label 'Visual COBOL'

and few HD disks, drivers and single sided disks (when I put it in FDD and try to read they are screeching).

Is data on them worth to keep?
 
DUDE DUDE DUDE...not sure what they are but archive them...NOW! Use Teledisk if you have to...you can get it here:

http://www.classiccmp.org/dunfield/img/index.htm

It's SO important to save everything you possibly come across. And even more important to make them available to others who might need them. Good luck.

And if people are irritated by the suggestion of using TD, then I suggest someone post a tutorial of ImageDisk so that people who aren't properly "initiated" can make use of it.
 
hmmm, I've gotten that screeching sound too. It usually means the disk is just bad. AAMOF a group were successful in throwing my whole drive and/or computer out of wack.
 
About 30 of my old BBC B disks are screeching. Can't read them, nor format them.

The most important thing to do with old diskettes that still work is to archive them! You can pick up new, unused 5.25" floppy disks fairly cheap.
 
If they did, they wouldn't be cheap!

The unused sealed ones I have manged to buy tend to date from around 1993-1995. Haven't had any problems with them (fingers crossed...)
 
All of 'important-looking' are IBM-incompatible.
TeleDisk can't read 'em, rawrite too. So they are damaged?
 
if you happen to find some older floppy disks that are sealed and weren't stored in adverse conditions (heat and humidity can be big problems), they very well could live up to 1-2 dozen reads/writes, which is great for testing purposes and whatnot. I found a sealed box of high density disks. Opened them up, haven't had any problems yet, but for some reason couldn't format them as quads (720k). Maybe they used a different oxide, like the difference between standard and "metal" cassette tapes. I seem to recall being able to format a high density disk to anything years ago...
Many times double density disks will format to 720k with no big problems. The thing is not to put absolute faith in them. If you need to say dump an image onto one for the purposes of rereading it with say ImageDisk, then reserve them for that type of purpose.
 
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