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Shadow Lord
December 1st, 2014, 06:46 PM
While doing a search for Quaid Disk Analyzer (prompted by this thread (http://www.vintage-computer.com/vcforum/showthread.php?36260-Sold-on-eBay-group-of-IDE-Cards-CopyIIPC-and-Compactic-Card&p=348565#post348565)) I ran into this ad (http://static.pcjs.org/pubs/pc/magazines/pctj/PCTJ-1987-02/pages/PCTJ-1987-02%20216.pdf) (left lower corner). It talks about a program that allows writing 360KB disks on a 1.2MB drive and have them remain readable on a 360KB drive. I am guessing the program purposefully adjust tracks to compensate for the narrower track width on the HD drives. Anyone have an experience with this and know how it worked?


Thanks.

SpidersWeb
December 1st, 2014, 06:58 PM
I found a 'review' of sorts: http://books.google.co.nz/books?id=Sj0EAAAAMBAJ&pg=PA30&dq=cpyat2pc&hl=en&sa=X&ei=dDh9VMSdCZDr8AXkm4LwBQ&ved=0CB0Q6AEwAA#v=onepage&q=cpyat2pc&f=false
Sounds like it just wrote to the 'in between' tracks instead of just double stepping.

krebizfan
December 1st, 2014, 07:57 PM
There were a few similar shareware utilities. None of them produced disks that worked with every 360 kB drive. I think the place I worked for in 1990 purchased a copy in the hopes of doubling the number of diskettes that could be produced but it got dumped in the back room and bunches of normal 360kB drives were added instead.

If cpyat2pc is the product I am thinking of, it was slow (roughly 3 times as long to fill a disk) and applications couldn't write directly to diskette. Instead, the special program would copy files from hard disk to 360kB diskette.

Edit: The only review I can find a reference to is in the Nov 1988 issue of Foglight. Can't find the issue though.