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From: Herbert Rosenau 
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@Date: Wed, 08 Oct 2003 19:57:11 +0200
Subject: Re: New installation/recovery
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Klaus Roeckerath, M.D. wrote:
> Hi all,
> 
> I ran into a serious problem with my current HD, a SCSI IBM DNES-318350/18GB.
> It is getting noisier all the time and I think it is about to die. I now have a
> new Quantum Atlas 10 KIII, and fortunately the German eCS 1.1 arrived two days
> ago. I have a backup of all my program and data partitions, and as I need to
> have a working system, I only want to install eCS, and then re-install my
> current system to the new HD via eCS. To actually transfer all the programs to
> eCS will have to wait. The backups are on ORB cartridges, so it should merely
> be partitioning the new disk and then xcopy the various data from the backups.
> If I am wrong, please let me know.
> 
> What I want to know, though, because I am unexperienced with eCS and have heard
> about the LVM feature: Is it recommended to avoid it, and if so, how can I do
> it?

As LVM allows you to give a volume any drive letter you lokes to use 
there are different ways to come on:

To prepare the system (hardware):

First step: instert your SCSI HD on the SCSI bus - so you'll have both 
the old and the new disk in access.


- Boot up from CD.
- fire up LVM (or minilvm
- make the naked partitoning - nothing else
- When the new system should have the BootManager,
   it must be on the new disk - but as there is one
   on the old disk you would be unable to create it,
   so create at first a primary partiton in the size of one
   zylinder - nothing more (less is impossible)
- create all partitons in any size you like (naked partitons only!)
   This will help you to make the design of primary and extended
   partitons right.

- you may decide to run the old system in parallel to the new system 
from the new disk. This decision would be the shortest way to come up 
quickly again with a working system AND to have anything on the new 
system:

Boot up from the eCS system as described above - but in your 
partitoning cheme you needs another not already existent partiton 
(volume) too! This new volumes will get the NEW system

Make the volumes on the new disk, assign a drive letter of your choice 
to each.
Copy any data from your old disk into the volumes on your new disk
(including the system partiton). When that is done well, switch the 
computer off!
Remove the old disk, change the ID of the new disk to the one of the 
old disk
Boot from installation CD
- remove the mini partiton that was designed as placeholder for BM
- reassign the drive letters of each volume to the one they were
   on the old disk.
- assign the volume of the old system to BootManager
- assign the volume of the new, currently unused volume to the BM too

Now you can boot up to the old system on the new disk any time you 
likes to do so. If the old system is NOT LVM aware you should remove 
fdisk.com from it - as it is forbidden now to use it!

Boot up from CD to install eCS 1.1 on the new volume. When the install 
is finished you can decide on each boot which system (the old or the 
new one) should boot.


To copy a whole volume from one disk to another on commandline

x:		- drive letter of destination volume
xcopy c:\* /H /O /T /S /E /R /V		- copy the whole thing.
y:		- next destination drive


Hint: under any circumstance you have to use the installation CD to 
make the partitoning and LVM handling because the BM, LVM, and some 
filesystems (at least JFS) have newer versions.

Hint: the eCS 1.1 volume should have a size of about 1 GB. Only HPFS 
is allowed yet for it.


Hint: make at least ONE volume JFS - because at some time you may 
decide to give up the old system and reuse the then free space for 
data. With JFS you can then just extend the LVM volume to use the then 
free space too, so you will save a drive letter.

Hint: as LVM lets you decide the the drive letter for a volume from 
the full range of available ones it is on you to use this feature, so 
you may name your drives Y: X: M: G: in that order. No need to have a 
C: anymore. O.k., this may be limited yet to the drive letters your 
OLD usystem uses now because the old system will only boot with the 
drive letter it was installed to.

-- 
Tschau/Bye

Herbert Rosenau
EDV Beratung & Programmierung
Lindelbrunnstr. 53a
76767 Hagenbach

Tel: 49-7273-919416
Fax: 49-7273-93072                     http://www.dv-rosenau.de/


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