[rescue] SGI Indy revival

[Joshua Boyd]

I am hoping to show an Indy in the retro room at a conference next 
weekend, but I'd like to make sure it is fully backed up first, which I 
should have already done anyway.  At the moment surprisingly everything 
works.

There are two areas of concern.  This machine has licensed software on 
it, so in addition to backing up the disk, I want to back up the 
identity of the machine so that if need be it can be restored to a 
different one or after the NVRAM is someday replaced.  For identity, do 
I just need to back up the eaddr?

Virtually all of my Irix experience is with Irix 6.4 then Irix 6.5, so I 
want to be a little sure of things here before diving in.  Previously I 
would have taken the disk out and DD'd it but currently I don't have any 
other machines with SCSI running, and would prefer not to have to set 
that up to get this backed up. Here is the process I'm thinking, and I'd 
like feedback on it.

1) Boot into single user mode.

2) Connect a second disk and EFS format it.

3) Use tar to backup the first disk  piped to tar extract on pointed at 
the new disk.

3b) tar -cpofv - -C / . | tar -xpof - -C /newdisk

I'm a little uncertain if it will then end up trying to recursively 
stuff as it is written to /newdisk. I know that 5.3's doesn't support 
--exclude.  It does support -X though.

4) turn off, unplug, swap the scsi ID on the new disk to the old one and 
disconnect the old one.

5) success?