[Coco] MOOH cartridge dual boot demo

[Alex Evans]

Thanks for your efforts.

On Mon, Apr 29, 2019, 18:58 Tormod Volden <lists.tormod at gmail.com> wrote:

> Alex, no worries :) I get a fuller picture now, thanks. We will figure
> it out. I'd suggest I first send you a prepared and tested SD card,
> and if that doesn't work we'll replace the board. In the meantime I
> cannot come up with any possible explanation why everything works fine
> as far as reading is concerned, but writing fails. Only that some SD
> cards use a lot more current when writing, but there should be plenty
> of headroom for that. For your information the MMU part works
> independently of the SPI interface which the SD card is hooked up to.
>
> Regards,
> Tormod
>
>
> On Mon, Apr 29, 2019 at 10:22 AM Alex Evans <varmfskii at gmail.com> wrote:
> >
> > P.S. If I came across as a bit brusque, that was not may intent.  The
> > suggestions are appreciated, just given the full picture (which you
> > didn't have), they aren't particularly useful.
> >
> > On Mon, Apr 29, 2019 at 1:47 AM Tormod Volden <lists.tormod at gmail.com>
> wrote:
> > >
> > > On Mon, Apr 29, 2019 at 7:11 AM Alex Evans wrote:
> > > >
> > > > What are you using for an SD card? I have tried several and the
> result is
> > > > always the same. I can boot into either FUZIX or Nitros9, but the
> first
> > > > write to the file system.corrupts the card.
> > > >
> > >
> > > Any SDHC card between 4GB and 32GB should work fine. Also non-SDHC
> > > cards (2GB and lower) should work too, but I haven't tested that as
> > > much. I use Kingston cards and never had any issues with them,
> > > otherwise Sandisk is generally recognized as a good brand with quality
> > > cards.
> > >
> > > Note that FUZIX requires you to unmount the file system cleanly before
> > > powering off. The recommended way is by running:
> > >  telinit 6
> > > and wait until it displays "Halted.". If not, you will be prompted to
> > > do run a file system check (fsck) the next time it boots up, and this
> > > takes forever so you really don't want to do that. These are
> > > "features" of FUZIX (and many old UNIX systems).
> > >
> > > It has nothing to do with 256 versus 512 bytes sectors, because the
> > > NitrOS-9 system uses the rbsuper high-level driver to convert sectors.
> > >
> > > Regards,
> > > Tormod
> > >
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