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From: shair@ux1.cso.uiuc.edu (Bob Shair)
Newsgroups: comp.unix.aix
Subject: Re: RS/6000 AIX release tape format
Message-ID: <1990Aug7.172615.19203@ux1.cso.uiuc.edu>
Date: 7 Aug 90 17:26:15 GMT
References: <1990Aug7.014808.16071@caen.engin.umich.edu>
Distribution: usa
Organization: University of Illinois at Urbana
Lines: 41

The IBM Support Center gave the U of Illinois the following
instructions for copying a stacked tape:

1. Change the tape device to the correct blocking:
       chdev -l rmt0 -a block_size=512
(this made the tape readable for them, and may be all you
 need)
  
2. Copy all of the images from tape to hard disk:
 a. Boot image ~2294880 Bytes
 dd if=/dev/rmt0.5 of=BOSBOOT bs=512 conv=sync
  
 b. install programs ~1382400 Bytes
 dd if=/dev/rmt0.5 of=INSTALL bs=512 conv=sync

 c. Table of Contents (variable size depending on number of lpp's)
 dd if=/dev/rmt0.5 of=TOC bs=512 conv=sync
  
 d. Base Operating System ~20480000 Bytes
 dd if=/dev/rmt0.5 of=BOS.OBJ bs=512 conv=sync

 e. Message and locale catalogs ~3737600 Bytes 
 dd if=/dev/rmt0.5 of=MESSAGES bs=512 conv=sync
  
 f. Repeat step e for all other lpp's to be copied...

3. copy images to second tape:
 dd if=TAPEBOOT of=/dev/rmt0.5 bs=512 conv=sync
 et cetera

******WARNING  ***********
IMPORTANT -- IMPORTANT
The copies must have ALL images on them even if you only plan
to use the copied tape to boot the system and then install 
from non-stacked tapes or over the network.
***************************

-- 
Bob Shair                              shair@vmd.cso.uiuc.edu
Scientific Computing Specialist        SHAIR@UIUCVMD (bitnet)
IBM Champaign