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Chameleon => Bug Reports => Topic started by: gxsolace on September 30, 2011, 08:45:19 AM

Title: EBIOS read error: 0x42 on Software RAID 0
Post by: gxsolace on September 30, 2011, 08:45:19 AM
Hi All -

Getting this error while booting Lion once in a while in RAID 0 (Apple software RAID).
It happens once in a while but I can make it go away by repairing permissions + clearing boot/kernel caches -- although I'm not sure which one is actually helping, and that may just be a coincidence.
But it'll come back, and I won't be able to boot from the RAID from that default partition.

I have a striped RAID 0 consisting of 4 SSDs, and boot from a Chameleon USB boot stick. This has only happened since going to RAID -- never had any issues on single standalone drive (also booting from USB boot stick).

The odd thing is, Chameleon now lists 2 to 3 identical "Macintosh HD" volumes at the boot selection screen. I only have 1 "Macintosh HD" volume on the RAID array, which is called "RAID." It also sees that too. So at the boot selection screen I see:

hd (1,3) Macintosh HD
hd (2,3) Macintosh HD
hd (3,3) Macintosh HD
hd (4,3) RAID

If I get the EBIOS 0x42 rear error, I won't be able to boot from 1 or 2, but I can boot from 3 or 4 ("RAID"). And when the EBIOS error 0x42 does happen, the listing will show up as this:

hd (1,3) <?xml versio
hd (2,3) <?xml versio
hd (3,3) Macintosh HD
hd (4,3) RAID

And so 1,3 and 2,3 will not be bootable but the others will be. Again, one RAID 0 array called "RAID" with a single volume on it called "Macintosh HD".

/gx
Title: Re: EBIOS read error: 0x42 on Software RAID 0
Post by: Gringo Vermelho on October 04, 2011, 06:00:10 PM
Which version of Chameleon are you using?
Title: Re: EBIOS read error: 0x42 on Software RAID 0
Post by: gxsolace on October 05, 2011, 08:03:43 AM
I've tried with Chameleon-2.1svn-r1516 and r1573.

This is with Lion 10.7.1.

/gx