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Undo Raid 1

Tags:
  • NAS / RAID
  • Partition
  • Storage
  • Hard Drives
Last response: in Storage
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October 18, 2014 4:15:19 AM

I have an older 640 GB hard drive. I installed a new internal 2 TB drive in an open bay/port. I was thinking I could use RAID 1 for the 640 drive and another partition to use the extra storage. Once I set up the RAID, the drive capacity of the 2TB drive changed to 640GB. I was not able to expand it.

I decided to break the RAID and I reformatted the drive using a USB docking station. I reinstalled the drive. The RAID is still broken, but I still cannot repartition or in any way get more capacity than 640GB on the 2TB drive.

I've tried:
Win 7 disk management--does not allow expansion above 640 GB
Intel Rapid Storage Technology--Shows the full capacity of the drive, no actions I can take
BIOS--Shows the drive as a 2TB, shows AHCI, not RAID
Tried MiniTool Partition Wizard--no help

I suppose I can use this drive in the docking station forever to get the full capacity, but that is ridiculous. Any ideas? I think there is something remaining in the BIOS or registry that is limitiing the drive size.

More about : undo raid

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October 18, 2014 4:28:24 AM

moon_tower said:
I have an older 640 GB hard drive. I installed a new internal 2 TB drive in an open bay/port. I was thinking I could use RAID 1 for the 640 drive and another partition to use the extra storage. Once I set up the RAID, the drive capacity of the 2TB drive changed to 640GB. I was not able to expand it.

I decided to break the RAID and I reformatted the drive using a USB docking station. I reinstalled the drive. The RAID is still broken, but I still cannot repartition or in any way get more capacity than 640GB on the 2TB drive.

I've tried:
Win 7 disk management--does not allow expansion above 640 GB
Intel Rapid Storage Technology--Shows the full capacity of the drive, no actions I can take
BIOS--Shows the drive as a 2TB, shows AHCI, not RAID
Tried MiniTool Partition Wizard--no help

I suppose I can use this drive in the docking station forever to get the full capacity, but that is ridiculous. Any ideas? I think there is something remaining in the BIOS or registry that is limitiing the drive size.


Perform a low level format outside of windows. When the Array was initialized, data was written to the boot sector of the drive indicating it's size etc.

Member Soda-88 provided the following info in another forum post

HDD Low Level Format Tool included on Hiren's BootCD
http://www.hiren.info/pages/bootcd

DL link: http://www.hirensbootcd.org/download/
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October 19, 2014 1:40:54 PM

drkatz42 said:
moon_tower said:
I have an older 640 GB hard drive. I installed a new internal 2 TB drive in an open bay/port. I was thinking I could use RAID 1 for the 640 drive and another partition to use the extra storage. Once I set up the RAID, the drive capacity of the 2TB drive changed to 640GB. I was not able to expand it.

I decided to break the RAID and I reformatted the drive using a USB docking station. I reinstalled the drive. The RAID is still broken, but I still cannot repartition or in any way get more capacity than 640GB on the 2TB drive.

I've tried:
Win 7 disk management--does not allow expansion above 640 GB
Intel Rapid Storage Technology--Shows the full capacity of the drive, no actions I can take
BIOS--Shows the drive as a 2TB, shows AHCI, not RAID
Tried MiniTool Partition Wizard--no help

I suppose I can use this drive in the docking station forever to get the full capacity, but that is ridiculous. Any ideas? I think there is something remaining in the BIOS or registry that is limitiing the drive size.


Perform a low level format outside of windows. When the Array was initialized, data was written to the boot sector of the drive indicating it's size etc.

Member Soda-88 provided the following info in another forum post

HDD Low Level Format Tool included on Hiren's BootCD
http://www.hiren.info/pages/bootcd

DL link: http://www.hirensbootcd.org/download/


I tried this and it did not work. Everything that I do to format the drive formats it as if it were a 640 GB drive. I cannot get it back to the 2TB original size.
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