TYAN THUNDER K8HM Manual page 96

SWAPPING ARRAYS FROM THE BIOS
Using the Swap Two Arrays option, you can reorder arrays.
Notes:
If you create more than one array, you can install the operating system to
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any of them. However, a small amount of boot information is always
written to a disk in the first array on your array list regardless of which
array you install the operating system on. If anything happens to that disk
in Array 1, you will not be able to boot. Broadcom recommends installing
on a redundant array type --- such as RAID1 or RAID5 --- and then
swapping that array into the first position if it is not already Array 1.
This swap feature is only available from the BIOS.
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To swap arrays:
1. Highlight Swap Array(s) from the Main menu, and then press Enter.
2. Use the arrow keys to highlight an array, and then press Insert to select it.
3. Use the arrow keys to highlight another array, and then press Insert to select it.
4. Press Enter to swap the arrays.
In this example, the RAID10 array was the first array created. However, to boot from
the RAID5 array, the arrays were swapped so that the RAID5 array is the first device
listed.
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