On Thu, Feb 15, 2001 at 07:58:22PM +0000, Rob Andrews wrote: > Seems that there's a certain amount of reading in advance that should be > done when playing with open firmware settings. Be warned: Don't type > the following commands into your OF, unless you know your machine will > survive.
correct, you need to be VERY careful what you change on OpenFirmware 3 machines (all newworlds) in short NEVER mess with nvramrc or load-base load-* variables. the only variables you should ever consider changing are boot-device, boot-command and boot-file. DON'T TOUCH ANY OTHERS. > Whilst trying to get netbsd booting (was aiming to see about hardware > support), I entered "setenv real-base 600000" followed by "reset-all" into > my open firmware 3 iBook. I was under the impression it was 2.4, judging the > version at the top of the OF screen. i hope your warrentee has not yet expired, because your bootrom has probably been destroyed. see the netbsd FAQ: http://www.netbsd.org/Ports/macppc/faq.html#ofw-bugs setting this load base on a newworld (OF3) box causes the bootrom to be overwritten. messing with the nvramrc can also cause equal damage. on newworld OF is stored on flash and not a ROM like it is on an oldworld. > Any how, now when I hit the power button, it releases the apple noise, spins > up HD and CD-ROM, and does nothing more. > > I've tried cmd+option+PR, cmd+option+OF, removing battery, pressing the > reset button, but all to no avail. yup > Does anyone know a quick fix (opening the unit is not an issue, I replaced > the HD and am familiar with the insides) for this, or shall I just call the > repair centre now? ;) your only chance is to try and boot the backup rom, to do this shutdown, and boot while holding down the interupt switch, keep holding it down for a long time and if it works you should get a OF prompt where you can run set-defaults. i would neglect to mention the details of the boot failure if you do need to send it in for warrentee repair. -- Ethan Benson http://www.alaska.net/~erbenson/
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