SLES 11 can only boot from the first eight devices in the boot devices list. When you select a boot device or install a boot loader on a device that is farther down in the list, it produces an error message:
The device map includes more than 8 devices and the boot device is out of range. The range is limited by bios to first 8 devices"
To prevent the device map error message, choose a device that falls into a position less than 8 in the device list. To install the boot loader to a disk:
During the installation of SLES 11, click on the Expert tab when you get to the Installation Setting screen.
Click the Boot loader installation tab.
Click on Boot loader installation details
The list you see is the boot order list.
Choose a boot device that falls into a position less than 8 in the device list.
If more than one disk is listed, select a disk and click Up or Down to reorder the displayed disks to ensure that your boot disk is in the top 8 devices.
Click OK two times to save the changes.