Re: missing driver (AppleMacRiscPCI) at startup on G5
Re: missing driver (AppleMacRiscPCI) at startup on G5
- Subject: Re: missing driver (AppleMacRiscPCI) at startup on G5
- From: Terry Lambert <email@hidden>
- Date: Wed, 19 Dec 2007 19:38:08 -0800
The boot process is pretty well documented on developer.apple.com.
Copying is not going to work for these files, since there are some
very particular requirements for the date stamps on kernel, files,
directories, and the cache file itself for the cache to be considered
trustworthy.
Is there a particular reason you are messing with this on an already
booting system, if you are not building your own kernel, or is it just
burning curiousity?
If the latter, there's a huge amount of documentation on the boot
process at <http://developer.apple.com>.
-- Terry
On Dec 19, 2007, at 6:03 PM, Al Ciplickas wrote:
I finally got the bootcache.plist file copied over and the
Extensions.mkext file written. But alas, it still did not want to
start up. Same message as in the first note. So there must be
something still missing. Do know what other files I might need at
start up? -or where to study about startup necessities? I can't
believe I'm the only one that has had this problem, but maybe I am.
Feeling a bit dumb at the moment.
Thanks,
-Al-
On Dec 19, 2007, at 1:31 PM, Terry Lambert wrote:
This is the first time I have ever heard of it. I had assumed that
your problem was that you were building your own kernel, so the
KEXT cache was out of date relative to the kernel, and the driver
could not be loaded by the boot loader from the cache (it didn't
match the kernel), and without a PCI driver, you couldn't load the
PCI driver off disk.
-- Terry
On Dec 18, 2007, at 8:44 PM, Al Ciplickas wrote:
Thanks again, Terry. I tried the rebuild and the complaint was
that there was not a usr/../bootcache.plist (or something to that
effect). Can't imagine how that could have happened, since I was
not aware of that file. So I thought doing an 'upgrade' from an
Install DVD would solve the problem. No way. The upgrade
finished normally, but there was neither the bootcache.plist nor
the kextentions.cache (sp?) files. This is confusing, as I expect
a system upgrade to make all the necessary files to do a normal
startup. I will locate an active bootcache.plist from an existing
system partition and copy it to the usr/../ directory to see if it
will help me do the kextcache rebuild. Do you think this is an
anomaly for me or has this happened many times before and I should
file a radar report?
-Al-
On Dec 18, 2007, at 2:38 PM, Terry Lambert wrote:
You need to rebuild the KEXT cache, not the KEXT.
man kextcache
or
http://developer.apple.com
- Terry
On Dec 18, 2007, at 2:09 PM, Al Ciplickas wrote:
Thanks, Terry. I'll rebuild the KEXT. But forgot how at the
moment. Any hints?
-Al-
On Dec 18, 2007, at 1:25 PM, Terry Lambert wrote:
On Dec 18, 2007, at 12:00 PM, Al Ciplickas wrote:
This is a new one for me: G5 complains about
'com.apple.driver.AppleMacRiscPCI' missing in the startup from
'kld_load_from_memory()'. I got that using <cmd-V> at
startup. I used another system partition to look it the file
was there (in System/Library/Extensions/) and it was! So I
took out the kextensions.cache and its partner and tried
again: still got the same complaint. (By the way, it says
there are 1310 buffer headers and 1310 cluster IO buffer
header, if that matters.)
Do anyone know of something else to try? This is under OSX
10.4.10 as well as 10.4.2 (which I reloaded in hopes of
clearing up "lost" files).
Instead of removing the KEXT cache, rebuild it.
The error is indicating that it's unable to load it from the
cache that was loaded into memory by the boot loader.
It can't read it off the disk itself because it can't even talk
to the PCI bus on which the disk controller lives without this
KEXT loaded.
-- Terry
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