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Date:	Tue, 23 Apr 2002 10:00:32 PST7
From:	"J. R. Fox" <jr_fox@pacbell.net >
Reply-To:	scoug-help@scoug.com
To:	scoug-help@scoug.com
Subject:	SCOUG-Help: Re: System Cmdr. & eCs

Content Type: text/plain

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> >In some conversations with Steven a while back, he speculated that System
> >Commander might do some housekeeping stuff in the MBR area (?), where the
> >LVM component of eCs (? -- should have written this down, rather than

Steven replied to me:

> Not quite. What I said is that SC probably does not do anything to
> protect the sectors that LVM uses to store the LVM data.

Thanx for the clarification.

> All this means
> is that SC may or may not co-exist with LVM and that you need to do some
> testing before assuming all is well.

which Sandy seems to have done. If he ran multi-OS boot options, not too
dissimilar from mine, and pushed his setup to around the same degree, Ray &
I should be o.k. with this. But I should probably upgrade SC 3.x to the 7.0
Sandy was using.

Is it possible to have the eCs Boot Mgr. in there too, as a fallback in case of
problems ? If BM is not active, it could be waiting in the wings (so to speak) ?

Steven added:

> I would expect SC to not cause problems in the simple cases.

I guess it comes down to what constitutes _simple_ ?

> Where SC might cause problems is if you tried to use it to maintain multiple eCS
> installs with different volume/partition configurations. Let's say you
> wanted 2 copies of eCS installed, both on a volume built from the 1st
> primary partition and you tried to use SC to update the MBR to swap the
> partitions in and out. I can visualize LVM getting rather confused.

O.K., that ain't simple, clearly. I don't plan to use JFS or to build "jigsaw"
volumes. I do plan to retain my old Warp 4 partition, probably as the new
Maintenance Partition. (I've gotten used to having a very well-stocked, full-
function Maintenance Partition, even if that runs counter to the general concept.)
I haven't yet heard any compelling reason not to do this. According to an article
in VOICE a while back, Warp 4 can be retrofitted to support LVM, though I
don't think I'd bother with that. Other than that, I plan to have one NT-4 and
one W2K partition (no FAT-32), and to keep the old DOS 7 partition. This
is slightly more complicated than what I've had the last five years, but I hope
that it can work out as well as that did.

Jordan

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