AIX 4.1.3 on 7009-C20 RS/6000

Kevin Bowling kevin.bowling at
Mon Jan 8 09:04:57 CST 2018

Yes, has my RS/6k preservation

Why are you trying to install that specific version?  For "standard"
MCA systems there are only three versions the really "matter" IMHO and
backward binary compatibility is good in AIX:  3.2.5, 4.3.3, 5.1.
3.2.5 is best for early POWER1 and includes a compiler.  4.3.3 is a
good balance of performance, new enough C/POSIX interfaces to port
stuff, features, etc.  5.1 is fine on more powerful machines (the C20
with cache should be ok).

For newer PCI systems 5.1, 5.3, 7.1 are the interesting versions.  5.1
for PReP, 5.3 for older CHRP, 7.1 for P4-P6.  7.2 will only run on
P7+.  And then the oddball systems like the Apple Network Server and
ThinkPad 800s have their own 4.1 releases, and the 7007-N40 has a
special 3.2.5 release.  I have the ANS and N40 releases if anyone
needs them.


On Sun, Jan 7, 2018 at 9:57 PM, Benjamin Huntsman via cctalk
<cctalk at> wrote:
> Any RS/6000 hobbyists out there?
> I got my old 7009-C20 pretty tricked out and hardware carefully selected to be compatible with AIX 4.1.3, the version I'm trying to get running on it. Unfortunately, I can't get the dang thing to boot my 4.1.3 or 4.1.4 CD's.  It'll boot my 4.1.5 disc, however.  The 4.1.3 and 4.1.4 CD's are labeled "AIX for clients" or something like that, and I seem to recall having trouble getting other RS/6000's to boot from this 4.1.3 CD, even though it's genuine original media, and reads just fine in a working system.
> Anyone know a way to check what systems an old AIX 4.1 disc supports, or have  C20 or similar MCA machine running 4.1.3?
> My other thought was to try to NIM boot it using my ThinkPad 860 as a NIM server (running 4.1.5), but it unfortunately doesn't have enough capacity to hold a lpp_source and a SPOT, and even then it looks like the 4.1.3 disc may not have enough stuff on it to support the C20 anyway...
> Anyway, thanks in advance!

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