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Forum Discussion
ReadyNAS Pro 4 & WD MyBook Duo - wrong drive size
I have a ReadyNAS Pro 4, and a brand new WD MyBook Duo, with a pair of 6TB drives in it for a total of 12TB. I figure this will let me back up my 9TB on the ReadyNAS Pro 4 to the external drive witho...
I finally figured this out, although it was a bit of a challenge.
Mac OS X was throwing a small EFI partition at the front of the drive, that the NAS was picking up on. Even when I used a formatting tool to remove it and create a single partition, then NAS did not want to format the new partition, even from a command line using SSH.
The trick was to connect the USB drive to a Linux system, repartition it down to one partition, and then format it in EXT4 *before* attaching it to the NAS. In my case, I used an Unbuntu VM downloaded for free from Parallels, but one can also easily boot from a GParted CD and use that. Make sure you create, and format, the partition before you attach the drive to the NAS.
Once that was done, the NAS saw the drive, the correct partition, and was able to reformat it on its own (my check to make sure it was happy). I noted that I only have 11 TB listed, not 12... might be a limitation of how ETX4 is set up on the drive (it's still more than enough to back up 9 TB from the NAS!)
Mac OS X was throwing a small EFI partition at the front of the drive, that the NAS was picking up on. Even when I used a formatting tool to remove it and create a single partition, then NAS did not want to format the new partition, even from a command line using SSH.
The trick was to connect the USB drive to a Linux system, repartition it down to one partition, and then format it in EXT4 *before* attaching it to the NAS. In my case, I used an Unbuntu VM downloaded for free from Parallels, but one can also easily boot from a GParted CD and use that. Make sure you create, and format, the partition before you attach the drive to the NAS.
Once that was done, the NAS saw the drive, the correct partition, and was able to reformat it on its own (my check to make sure it was happy). I noted that I only have 11 TB listed, not 12... might be a limitation of how ETX4 is set up on the drive (it's still more than enough to back up 9 TB from the NAS!)
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