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- Newsgroups: comp.sys.next.sysadmin
- Path: sparky!uunet!timbuk.cray.com!mmc.mmmg.com!mmm.serc.3m.com!pwcs!kegworks!lfahnoe
- From: lfahnoe@kegworks.mn.org (Larry Fahnoe)
- Subject: Re: 3.0 upgrade reformatting drive
- Message-ID: <1992Nov12.190420.303@kegworks.mn.org>
- Keywords: 3.0 upgrade
- Organization: The Kegworks, Minneapolis, Minnesota
- References: <1992Nov10.185302.32117@iitmax.iit.edu>
- Distribution: usa
- Date: Thu, 12 Nov 1992 19:04:20 GMT
- Lines: 78
-
- In article <1992Nov10.185302.32117@iitmax.iit.edu> vonb@iitmax.iit.edu (Robert Von Borstel) writes:
- >I would like to reinstall 3.0 on my internal drive in my slab.
- >Hope to see some performance improvement. I have the CDrom
- >drive also attached, but can someone tell me how I can do this.
- >
- >Seem to recall remembering something about being able to boot off
- >the cd-rom and then making the upgrade do a reformat or something
- >along those lines, but I have not had any success to date.
-
- I've just finished this sort of operation on my cube and am pleased to
- report that even with a machine with old roms, all you need is some time
- and patience to get the job done; the software works well. Here are the
- steps that I took to do it.
-
- 1) Backup all the files that you are interested in saving. I've got an
- OD, so piped a level 0 dump through compress and out onto the OD for
- both file systems.
-
- 2a) (optional) Reformat the disk if you wish to do things like enabling
- cache or change sector sizes. I've got a WREN VI, so I used
- `TheFormatter' (available on sonata) to reformat the disk. You will
- need another disk that you can put TheFormatter on and boot from to do
- this. TheFormatter was written for WREN VI drives, but it can
- apparently work with other disks as well. I do not any experience with
- other disks in the NeXT environment though.
-
- 2b) (optional) Partition the disk to your taste. While you are booted off
- an alternate disk, create the disktab for your partitioning scheme and
- then use `disk' to build the new file systems. I suspect you could do
- this by booting single-user mode off of the 3.0 CD-ROM and then using
- `newfs', but I was not quite that brave.
-
- 3) Make sure that you do not have any devices at SCSI ID 0 as the system
- will boot off of ID 0 without regard to the unit number in a bsd(n,0,0)
- command.
-
- 4) Set the SCSI ID of the CD-ROM drive to 0 (this may not be necessary,
- but I chose to do it this way) and then read pgs 11-14 of the Release
- Notes as they explain how to boot off of the CD-ROM. If you've set the
- ID to 0, use `bsd(0,0,0)sdmach rootdev=sd0'. You can tack on the nbuf
- stuff if you want to experiment with more buffers, I added `nbuf=128'
- and it worked just fine.
-
- 5) You will be warned that this is an installation rather than an upgrade,
- and asked a couple of questions to make sure you really wish to do
- this, as well as questions about partition information. You are
- encouraged to use a single partition, but when I answered `no' to the
- single partition prompt, it went ahead and used almost exactly the same
- parameters that I did when I built the file systems in step 2b. Since
- I was just splitting the disk in half, I can't be sure that some other
- partitioning scheme would have been preserved--just saying that it
- worked for me.
-
- 6) The basic system is then installed, and you are prompted to press
- Return and reboot the system once finished. If you've got the CD-ROM
- set to ID 0, you will need to change it to a value greater than that of
- the disk you've just built.
-
- 7) Once the new system comes up, you get to choose the language, and you
- are on your way. Because this is a minimal installation, you must
- install the optional packages by hand; this is also documented in the
- Release Notes.
-
- All told, with all the backups and restores to get my system back to the
- way that I had it before, the operation took somewhere around 6 hours. If
- one is just doing a simple build and does not have a bunch of customized
- stuff to replace, you could probably get the job done in a third of the
- time that I spent.
-
- Is it any faster? Who knows, I've only had it running for a little while
- now, but it does seem to be more efficient with regard to disk accesses
- than the system was after I had run UpgradeApp.
-
- --Larry
- --
- Larry Fahnoe Cellular One
- 612/832-7616 7900 S. Xerxes Ave, Suite 301
- lfahnoe@kegworks.mn.org Minneapolis, MN 55431
-