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Re: Any way to make a "dual boot" apple II disk?
- Subject: Re: Any way to make a "dual boot" apple II disk?
- From: Jeff Lodoen <jmlodoen@thegrid.net>
- Date: Wed, 09 Mar 2005 04:55:21 -0600
- Newsgroups: comp.sys.apple2
- References: <KduXd.11087$Zm4.9475@twister.rdc-kc.rr.com> <7ImdnQqlyKzDObPfRVn-hg@comcast.com> <Xns9613F343D6A10jlodoenthegridnet@216.196.97.140> <Xns96147A8D1D0jlodoenthegridnet@216.196.97.140> <090320050542114704%lockar@locutus.DOTorg>
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Lockar <lockar@locutus.DOTorg> wrote in
news:090320050542114704%lockar@locutus.DOTorg:
>
> With out trying to find 'Extra K' how did it really work?
>
> -Lockar
TECHNICAL NOTES
---------------
HYBRID.CREATE puts an empty ProDOS catalog on track 0 and tells ProDOS that
only tracks 0 through 16 are available. It then puts an empty DOS 3.3
catalog on track 17 and tell DOS 3.3 that only track 17 through 34 are
available. The result is that each DOS gets approximately half of the disk.
Both DOS's are happy with this set-up because ProDOS expects its directory
to be on track 0, while DOS 3.3 looks on track 17.