WD SERIAL ATA RAID CONTROLLER
TROUBLESHOOTING & TIPS - 27
USER MANUAL
Unable to Partition or Format Array
This condition may occur when the Reserve Sector of one of the drives has become corrupt or
bad. Removing the Reserve Sector will remedy any issue related directly to a Bad Reserve
Sector.
For Mirrored arrays (RAID 1), remove the Reserve Sector from the mirrored drive first (this
will appear during Step 3 below) then rebuild the mirrored array. Remove the Sector on the
Master Drive only as a last resort.
For Striped arrays (RAID 0), removing the Reserve Sector from any of the drives that are
striped will destroy the arrayed data.
To remove the Reserve Sector, follow these steps:
1. During boot up, press CTRL+F or CTRL+A to enter the EasyBuild BIOS utility.
2. Choose option 2, View Drive Assignments.
3. Press arrow keys to highlight the drive from which you wish to remove the reserve sector.
4. Press ALT+F1. The highlighted drive will start blinking on the screen.
5. Press CTRL+TAB. A message will appear that says the reserved sector (which is where array
information is kept) on the disk will be wiped.
6. Press Y to confirm.
7. Take the appropriate action:
- For striped arrays, repeat this process for each member of the particular array that is
having a problem. When you are finished, press the ESC key twice to reboot.
- For mirrored arrays, hit the ESC key twice to reboot.
8. After rebooting, use EasyBuild to re-create the array.
- For striped arrays, use FDISK and FORMAT after setting up the array.
- For mirrored arrays, rebuild the mirrored array.
Array Constantly Goes Into Critical or Offline Mode During Reboot
See Unable to Partition or Format Array above.
Cannot Rebuild Mirrored (RAID 1) Array
See Unable to Partition or Format Array above.
Fatal Errors or Data Corruption are Constantly Reported When Reading or Writing to Drive Array
See Unable to Partition or Format Array above.
CAUTION: Before removing the Reserve Sector of the drive(s), back up any existing data.
Removal of the reserve sector of any drive permanently deletes all existing data on the hard
drive.
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