Author Topic: EBIOS read error: 0x42 on Software RAID 0  (Read 1524 times)

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gxsolace

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EBIOS read error: 0x42 on Software RAID 0
« 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
« Last Edit: October 03, 2011, 12:51:18 PM by gxsolace »

Gringo Vermelho

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Re: EBIOS read error: 0x42 on Software RAID 0
« Reply #1 on: October 04, 2011, 06:00:10 PM »
Which version of Chameleon are you using?
10.9.0 - ASUS P8Z77-V Pro - i5 3570K - GTX 660 - Chameleon 2.2 svn-r2xxx
How to...
Install Chameleon: http://forum.voodooprojects.org/index.php/topic,649
Make your own Chameleon boot CD: http://forum.voodooprojects.org/index.php/topic,484.msg2131.html#msg2131

gxsolace

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Re: EBIOS read error: 0x42 on Software RAID 0
« Reply #2 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