what interface is exposed on the inside of one of these enclosures? Could a
HD20 be used on a macintosh portable, since I have a external floppy port?

On Wed, Jan 6, 2010 at 12:58 AM, Mac128 <[email protected]> wrote:

> Apple says it is officially not compatible with System 6. However,
> they are regularly used to boot up to System 6.0.8. I don't think
> System 7 supports the HD20 drivers, but I could be wrong about that.
> Never had a call to run System 7 off an HD20.
>
> HD20s are not rare. They routinely sell on eBay from anywhere between
> $25 and $50 depending on condition, but they are the only readily
> available hard disk storage option for a stock 512k/e. However, many
> 512K/es upgraded with a SCSI adapter, and are less dependent on the
> HD20.
>
> Apple did not release a SCSI drive until 9 months after the Mac Plus
> was released. The HD20 was an extremely common and low-cost
> alternative to extremely expensive SCSI drives which were only being
> offered by third party companies, and were not immediately available
> following the Plus release either.
>
>
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