May 31, 201214 yr unRaid detects 1953513492 on my HD204UI. My WD20EARS and WD20EARX have the same exact number of blocks: 1953514552 -- 1060 more blocks than my HD204UI. So my 2TB HD204UI can never be a parity drive -- which makes things a bit inconvenient. I did--don't now--have this HD204UI on a Gigabyte GA-P35-DS3L motherboard which is known to put HPA on HDDs. So is this why I have 1060 less blocks than the WD20EARS & WD20EARX? I ran a 30 hour (or so) preclear on the HD204UI and it succeeded and is running fine.
May 31, 201214 yr I did--don't now--have this HD204UI on a Gigabyte GA-P35-DS3L motherboard which is known to put HPA on HDDs. So is this why I have 1060 less blocks than the WD20EARS & WD20EARX? I have two WD20EARS, and on HD204UI - all of these three report 1953514552 blocks in unRAID. I think it is extremely likely that your HD204UI has been 'infected' by the HPA 'virus'!
May 31, 201214 yr http://lime-technology.com/forum/index.php?topic=4194.msg37010#msg37010 BIOS F4 has option to disable HPA.
June 1, 201214 yr unRaid detects 1953513492 on my HD204UI. My WD20EARS and WD20EARX have the same exact number of blocks: 1953514552 -- 1060 more blocks than my HD204UI. So my 2TB HD204UI can never be a parity drive -- which makes things a bit inconvenient. I did--don't now--have this HD204UI on a Gigabyte GA-P35-DS3L motherboard which is known to put HPA on HDDs. So is this why I have 1060 less blocks than the WD20EARS & WD20EARX? I ran a 30 hour (or so) preclear on the HD204UI and it succeeded and is running fine. what do you see when you type: hdparm -N /dev/sdX on the HD204UI drive? Odds are VERY HIGH the drive has had an HPA added by your gigabyte MB. Since the pre-clear signature was based on the artifically smaller size of your disk with the added HPA, the preclear signature will no longer be valid once you remove the HPA. If you plan on adding the disk to an existing array, another pre-clear cycle will be needed to prevent unRAID from clearing the disk on its own and the resulting down-time of the array. Joe L.
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