Re: Disks

[supertimer@aol.com (Supertimer)]

nathan@visi.com (Nathan Mates) wrote:

>Olav Bjarne Instefjord  <insola@online.no> wrote:
>>what kind of disks kan i use on a Apple //c?
>
>   Single or double sided, double density 5.25" disks, formatted for
>Apple IIs in an internal or external 5.25" drive. If you have a
>unidisk-capable //c and a unidisk 3.5", use single or double sided,
>double density 3.5" disks, formatted for Apple IIs. As the formatting
>is quite different (despite the same media) between an Apple II and a
>PC, do not expect to be able to read or write disks in the 'wrong'
>machine type.

Actually, the unidisk 3.5" is designed to use double sided double
density 3.5" disks.  It is not a good idea to use single sided double
density disks in it because there are two read/write heads, one on
each side.  That makes 400K per side for a total of 800K.  The only
single sided drives from Apple were for the Lisa and the early Mac.