Re: possibly boot hangs refers to other devices ???
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote: On Mon, 2006-07-03 at 22:14 -0700, Daniel Gimpelevich wrote:
> If you really want to bypass extensions when using BootX, boot with the
> Shift key and use the Control Panel.
It's not clear to me what machines he's talking about... but I think a
PowerBook G3 model 2000 is a newworld machine which isn't supposed to be
used with BootX.
In general, I also recommend booting oldworld's via Open Firmware when
possible (it can be made to work with beige G3s for example using some
Apple nvram hacks and netboot works with almost every oldworld machine
out there using bootp/tftp, you can netboot the zImage.coff). OF booting
is always more reliable than BootX. The problem with BootX is that it
"kills" MacOS but that sometimes leaves
some hardware devices in some
active state, potentially bus mastering or doing other horrors behind
linux back and corrupting memory. You should use BootX if nothing else
works.
Ben.
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i am sorry if i have confused people, by mixing topics too much and i hope i am
not doing it again here.
i have to say i have put quick on my powerbook3400/Sarge machine now and
it seems to be fine, perhaps a bit better, but not to say all is well yet. i took bens
advice to eliminate possibly bootx quirks with my misc problems.
it was sufficient for my boot hangs over scsci "double loading" to simply use
the startup version of bootx for this oldworld machine. that is specifically
to restart rather than using the control panel. but because of my
list of
other errors i went ahead and got quik going.
for reference: i used ofpath command of ybin package to get the path. then
i used "Apple System Disk" to set the open firmware variable including that.
note - it appears, using the command printenv at OF prompt that the apple util
resets the load base and a couple other variables i am not familiar with as well.
i found link to "ASD" at linuxppc/quik page; also note it is not necessary, just
convenenient - if one checks the debian bug reports for quik, there is some
work at automating better on the linix side, as ybin does for yaboot.
mostly i did not use quik before because i was unsure if i could easily still use
my mac os including conveniently and safely. it took me some while to feel assured
that this was the case. all i do is type bye at the boot prompt rather than boot
(note i told "apple system disk" i wanted a pause). the debian installer posts
a big
warning which scared me off and and also some other distros advise
against it. it is not currently set up for beginner to debian even transferrees.
i have my entire linux system as the first partition on the disk, of type
"new world bootblock" w/out a separate partition for quik use , followed by
swap and mac partitions.
more later about my attempts to boot a backup on scsi (internal drive here is ata)
some way some how if not by the powerbook then by a beigeG3/Rev2. (get it ?
back up copy sarge), and perhaps to try the powermanagager stuff again on pb3400.
about the other confusion, sorry also: my testing/etch machine is a rather highly
modified pismo/powerbook-firewire. having used yaboot there also made
it easier for me to try quik. my problem there is i have no backup, yet, but i am
going to try a different drive/cable.
backup is important !! computers and disks burn up ! the all do eventually,
often unexpectedly !!
brian
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