Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss
Kaypro 4X and Kaypro Robie
142 views
Skip to first unread message
rict...@gmail.com
Mar 22, 2015, 1:07:14 PM3/22/15
to
Hello,
I am looking for pre-formatted 5 1/4 disks for a old Kaypro 4X and
Kaypro Robie CP/M computer that I have recently acquired.
17-sector, 192 TBI
2.6 M
Maxell made these pre-formatted disks in 1985 or about, also pre-formatted Brown Disk UHRII.
I would like to buy old stock, or pay someone to pre-format about 25-50 of these disks for me.
These older Kaypro computers using the high density 2.6 meg drives did not have the ability to format a HD Diskette, only write information to the disk.
Or if someone knows how to make changes with the hardware or software to allow the drives to format, if that is even possible.
If you can help me out in any way I would be grateful.
Regards,
Rick Willbur
I am looking for pre-formatted 5 1/4 disks for a old Kaypro 4X and
Kaypro Robie CP/M computer that I have recently acquired.
17-sector, 192 TBI
2.6 M
Maxell made these pre-formatted disks in 1985 or about, also pre-formatted Brown Disk UHRII.
I would like to buy old stock, or pay someone to pre-format about 25-50 of these disks for me.
These older Kaypro computers using the high density 2.6 meg drives did not have the ability to format a HD Diskette, only write information to the disk.
Or if someone knows how to make changes with the hardware or software to allow the drives to format, if that is even possible.
If you can help me out in any way I would be grateful.
Regards,
Rick Willbur
rict...@gmail.com
Mar 23, 2015, 12:26:54 AM3/23/15
to
No information
Bryan
Mar 23, 2015, 7:33:04 AM3/23/15
to
On Sunday, March 22, 2015 at 1:07:14 PM UTC-4, rict...@gmail.com wrote:
> Hello,
> I am looking for pre-formatted 5 1/4 disks for a old Kaypro 4X and
> Kaypro Robie CP/M computer that I have recently acquired.
It's been a while and things are fuzzy, but I've never heard of a way for the end user to create those disks. They had a special 'servo track' laid down at the factory. They also had the unfortunate ability to remove the media's oxide due to polishing residue left on the heads.
> Hello,
> I am looking for pre-formatted 5 1/4 disks for a old Kaypro 4X and
> Kaypro Robie CP/M computer that I have recently acquired.
Your best best would be, as you requested, find someone that had some of these disks and wanted to part with them. That may be difficult due to the aforementioned disk-eating capacity of the Robie.
rict...@gmail.com
Mar 23, 2015, 8:34:04 AM3/23/15
to
Thank you for your helpful information.
I do have all the original 3 HD disks that came with the Robbie. I was hoping to make backups from the originals.
I did read about the drives eating up the tracks on the diskettes, because of the diamond dust left on the read/write head during manufacturing. A good head cleaning is all that was needed. It appears that my Robbie was never used very much, looks almost new, even the diskettes look new.
It looks like the best I could hope for is to find one or two used HD 3.6m pre-formatted diskettes, that somebody has laying around in their collection.
It seems that these HD diskettes were use with a small handful of computers, but the higher format never caught on during that time. The expense of the DH drives and having to buy expensive pre-formatted diskettes that nobody's else's computer could read would of been a big turn off.
I also read that Kodak who later aquired the technology, made a drive that doubled the 3.6 megabyte to 7.2 megabytes on a floppy diskette. For 1985 this was way ahead of its time. There must of been reliability problems, basically hard drive technology on a floppy.
Regards,
Rick
I do have all the original 3 HD disks that came with the Robbie. I was hoping to make backups from the originals.
I did read about the drives eating up the tracks on the diskettes, because of the diamond dust left on the read/write head during manufacturing. A good head cleaning is all that was needed. It appears that my Robbie was never used very much, looks almost new, even the diskettes look new.
It looks like the best I could hope for is to find one or two used HD 3.6m pre-formatted diskettes, that somebody has laying around in their collection.
It seems that these HD diskettes were use with a small handful of computers, but the higher format never caught on during that time. The expense of the DH drives and having to buy expensive pre-formatted diskettes that nobody's else's computer could read would of been a big turn off.
I also read that Kodak who later aquired the technology, made a drive that doubled the 3.6 megabyte to 7.2 megabytes on a floppy diskette. For 1985 this was way ahead of its time. There must of been reliability problems, basically hard drive technology on a floppy.
Regards,
Rick
rict...@gmail.com
Mar 30, 2015, 11:09:39 PM3/30/15
to
A Kodak HD600 high density pre-formatted diskette to 3.6 megabytes was found, thanks for the help with the information.
Regards,
Rick
Regards,
Rick
b52bo...@gmail.com
Sep 24, 2017, 2:35:32 AM9/24/17
to
0 new messages