Greetings,
I would like to know if anyone has successfully been
able to dual boot btwn 4.0g and 5.1.
I am using advfs, and currently have 2 /root disks,
and 2 /usr disks, both with 4.0g. I would like to
upgrade one of these to 5.1, and have the ability to
switch back to 4.0g incase too many applications get
broken as a result of the upgrade, as has been the
case in other upgrades (update install). I have other
local disks as well in this system (1.5 TB hanging
from a esa10000, hsz70 v7.3 controller), and all
filesystems are advfs. Also system is highly NFS'ed to
other boxes (tru64 4g and RedHat 6.0)
Alan_at_nabeth had some words of caution back then...and
i never tried/tested anything yet (No test resources
for this scenario). His note is attached below. Would
like to receive any additional words of caution and
techniques to proceed if possible.
All
Keeping all of a system disk isolated to a single disk
is pretty easy and offers a way to easily
switch among
versions on a given system. At one time I had
disks
for V1.3, V2.1, V3.0, V3.2, V3.2G and an
assortment of
V4 through V4.0D. This works best when the
system
disk is fairly isolated. NFS mounting from a
stable
server is the best way to get other file
systems.
If you do have other local file systems on
different
disks, some of the things you'll have to watch
for:
o The native version of AdvFS on V5 (AdvFS on
disk format
V4) isn't usable on V4 (AdvFS on disk
format V3).
o The AdvFS V3 support on Tru64 UNIX V5 may
make subtle
changes in the organization or usage of
data. If you
have a local file that needs to be usable
by both,
test it throughly.
o UFS tends to be less touchy and generally
fixable with
fsck, but test it as well.
V4 should be reasonably with the system
firmware requirements
of V5. Other hardware should be ok. The
HSZ70 at V7.3 may
not behave well on V5.
=====
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Received on Thu Jan 24 2002 - 19:53:36 NZDT