Solaris 10 x86 - software RAID boot

Question

What I can write in eeprom : - for boot form 1-st, and if it absent - from 2-nd disk ? (2 disks in soft raid). two bootpath ?
In Solaris 9/sparc for boot with one working HDD in mirror (2 disks in mirrir) I wrote in /etc/system : set md:mirrored_root_flag=1
What I can wrote for this in solaris 10/ x86 ?

Answer 1

Just for the record: The problem is solved.
I went on looking for more info on this message:
Oct 14 00:07:09 schille gda: [ID 107833 kern.notice] Sense Key: ICRC error during UDMAAnd then found an interesting post from 2004 by Juergen Keil:
The "bad block detected" message appears to be an old/obsolete error
message text, somewhere in the Solaris "ata" driver.
The ATA-1 standard (1997?) defined the 0x80 bit in the IDE
controller's error register as "bad block detected". (See page 32 on
<URL:http://www.t13.org/project/d0791r4c-ATA-1.pdf>)
The 0x80 bit seems to be "reserved" (undefined, not used any more)
with ATA-2 and ATA-3.
ATA-4 and newer now defines this bit 0x80 as ICRC "interface CRC error
has occurred during an Ultra DMA data transfer" when using ultra dma
transfers. (see the description of the "READ DMA" or "WRITE DMA"
command in <URL:http://www.t13.org/project/d1153r18-ATA-ATAPI-4.pdf>).
The Solaris ata driver seems to interpret the 0x80 bit according to
the old / obsolete 1997 ATA-1 standard.
So the "bad block detected" message seems to be a hint that some sort
of data corruption is happening on the IDE interface during UDMA data
transfers with the HDD. With UDMA capable disks it apparently does
not mean "the disk drive is dying".
I went to search what could cause a hardware datacorruption on my system and found that my internal removeable disktray was making bad contact.
After replacement everything worked as expected.