nvram -p does not work

[Andreas Schwab]

I'm using Mac OS 10.1.5.  When I try "nvram -p" I get the error message:

nvram: Error (-536870201) getting the Open Firmware variables

Maybe related: the IORegistryExplorer aborts when I try to visit
/device-tree/options:

RExplorer.m:175: failed assertion `KERN_SUCCESS == status'

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux AG, Deutschherrnstr. 15-19, D-90429 Nürnberg
Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."