Since you indicated that you have a 600GB vol0 on an F740, that may mean that you've already maxed out on capacity (depending on what you meant by 600GB -- raw/useable?; any other volumes?). Therefore, you may have to do the head swap first and then create the new vol0 once you're up and running on the F840.

Joe

-----Original Message----- From: Chris Blackmor [SMTP:chris.blackmor@amd.com] Sent: Monday, May 20, 2002 4:30 PM To: Leonard, Roger Cc: 'toasters@mathworks.com' Subject: Re: head swap

Roger, The 7XX to 8XX swap is a different architecture and requires very delicate

handling to avoid problems. We have done two in the past and I found out just how to screw it up on the first one. ;)

1. Changing root volume You can create a 2 disk volume naming it something other than vol0 and copy over all of /etc from vol0 Do a vol rename on the original root volume to something other than

vol0 Do a vol rename on the 2 disk volume to vol0 Set the 2 disk volume to a root volume with the vol options command Reboot

Once up and running you can remove the original /etc/ dir from the original volume and your new volume will now hold all your data. This also assumes that no one is mounting the data from vol0 at the time. That is another can of worms. This will put the 2 disk volume as the root volume but it is something that you need to do quickly so that everything in root on the new volume is the same as on the original volume

2. Changing the head for a 7->8 was a long time ago for me and I don't

want to steer you wrong. You should really contact tech support and make sure that they give you all the steps.

Good luck. C-

On Mon, May 20, 2002 at 02:45:56PM -0400, Leonard, Roger wrote:

...

i am thinking about swapping out a 740 for an 840 head. The 740 has a

big

...

vol0 (600G) that i would like to rename to something else in the process

and

...

dedicate a 2 disk RAID set to vol0 on the new head with a new 6.1

install.

...

is it a simple matter of configuring the new vol0 on the new head and plugging in the old vol0 and rebooting? or do i need to do some sort of rename and wipe out the old OS somehow. never having done a head swap before i would appreciate any pointers anyone could give me.

thanks

roger

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