10 Jan
2019
10 Jan
'19
12:03 p.m.
On Thu, 10 Jan 2019, Guy Dunphy wrote:
All my Apple II disks are DOS 3.2. When 3.3 came out,
it was a) too much trouble
to convert everything up, and b) ... read that 'missing the wave' story.
It gave me a sour feeling about 3.3. Totally my own fault, but still.
If you get any of the existing commercial devices that can read Apple II
disks, . . .
MOST, if not all, of the ones available are 16 sector. Although the
hardware could handle 13 sector, you would need to modify the software.
Even the upper level (file system) portions of the code are likely to be
hard-coded for 16 SPT.
For the MFM formats, avoid USB drives. They tend to be designed solely as
PC peripherals, and lack flexibility for even other sector sizes!
For FM and 128 bytes per sector (problematic for most PC FDC), check Dave
Dunfield's site for MFM imaging utility, and test programs for some FDC
capabilities.
--
Grumpy Ol' Fred cisin at xenosoft.com