[Coco] OS-9/68K raw disk access syntax

[David Ladd]

​​
I might be wrong, but if memory serves me I think the MM/1's OS-9/68K
formatted floppies sectors per track starts at 0 rather than 1 like some of
the older floppy formats use to be.  So may have to take that into
account.  Sadly I can't verify this at this time as my MM/1 is currently
packed away.​

On Fri, Jan 1, 2016 at 10:43 AM, Joel Ewy <jcewy at swbell.net> wrote:

> So, as another attempt to make a disk image file on the MM/1, I thought I
> would write the floppy image to a ramdisk (since I don't have a working
> hard drive on the MM/1 at the moment), then compress it, and see if I could
> squeeze it back on a FAT formatted floppy disk.  I thought I might be able
> to do this like so:
>
> copy /d1@ /r0/image.dsk
>
> Copy complains:  "can't get file descriptor.  Error #000:214". errmsg says
> "The file was found, but is inaccessible in the requested mode.  Check the
> file's owner ID and access attributes."
>
> The OS-9 manual mentions that you need to be superuser to use raw disk
> access, and it sounds like maybe that is tripping me up here. But there are
> no user accounts set up on this boot floppy, as far as I can tell.
> Wouldn't superuser be the default, or is there some 'su' equivalent I'm
> forgetting about?  Or do I just have the syntax wrong?
>
> JCE
>
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