Wed, 25 Oct 2000 Paolo Meriggi wrote:
> Dear all RTers, is there anybody out there who could give me (please,
> please please...) some hints on the following topic:
> I am managing and run RTLinux on an embedded system (as almost most of
> you...). I developed everything on a common HD, but now I have to take
> everything to just a 32 Mb flash disk, and some problems come out.
Exactly what I'm facing eventually. However; 32 MB!? Lucky you! :-) I'll
probably have to run at least some versions (the one that will replace the
current DOS version when upgrading old instruments) of my software from floppy
disks...
> During the transition and the final development of the sw, I would like
> very much to keep both the previous HD and the new Flash HD connected
> (the latter as /dev/hda1),
I'm not quite following here; are you using a single machine as dev system +
target system?
> and if possible duplicate a portion of the HD
> distribution (actually a Mandrake 7.1) and to install it on the Flash,
How do you mean? The option of booting into "Developer Mode" if the HD is
connected? A dual boot (LILO) with separate / partitions would handle that, but
anything else (on init level or later) would probably be troublesome, unless
you're using the same libc as the Mandrake distro regardless of "boot mode".
If you *are*, then you could probably get away with some early init script that
figures out which configuration to use and then selecte which set of init files
to use. (Adjusting a symlink to the entire /etc and then have a real /etc tree
for each "boot mode", perhaps? Another variant is to set up a runlevel for your
embedded variant.) Not that I see much point in such a setup, but it should be
doable. (You'll practically be dualbooting, but always using the same kernel,
and making the choise a few seconds later. Could be very useful if you have
some script or code that has to figure out what to do automatically.)
David Olofson
Programmer
Reologica Instruments AB
[EMAIL PROTECTED]
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