If you want to reparition the drive, then you must start from scratch. The only thing DU will do on the fly is adjust the size of an existing partition or add/delete existing partitions. You cannot "repair" a partition by resizing partitions.
1. Open Disk Utility in your Utilities folder.
2. After DU loads select the hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to the number you want. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed.
I just tried re-partitioning as you described and it didn't work. I appreciate you trying to help, but can you please do it in a less condescending manner? If simply re-partitioning the drive solved the problem, someone probably would have tried it and would have mentioned it in that thread. The latest post on that thread is actually December 12, 2012. If you read the thread, you will see that the solution is more complicated, as I suggested in my last post.
The reason I'm starting a new thread is because I want this matter to get more attention as Apple does not seem to be addressing it.
Then most likely the problem is related to;
- The product's manufacturer - check their tech support for answers.
- The fact that it's a 3 TB drive - may be a driver issue of some kind.
- Not all WD drives will work with Macs.
- May be a fault with the Mini's hardware.
Beyond this I have nothing more that might help you.
1. I checked their website and didn't find any answers. I posted the question there too. The problem is with a variety of manufacturers.
2. Not the issue. Problem affects a variety of drive sizes
3. Not the issue. Where did you get that information from?
4. Not the issue, as the problem occurs with a variety of computers.
If you can try prepping the drive on a system running Snow Leopard. I have found some links indicating that Snow Leopard can partition the drives.
Did your external come with a drive or did you install a drive separately? I assume the former, but wanted to check. Is there a switch on the box for using drives larger than 2 TBs?
Have you tried partitioning the drive into two volumes of 1.5 TBs each?
Thank you for your suggestions, but I have a certain level of expertise and you're suggestions are not helping me at this point. If you think you can help solve the problem, can you please post all your future suggestions to the other thread that I referenced where more people are involved in the discussion? Thank you.
This issue has been in discussion (actively) since last August here:
After months and months of new reports, it's pretty clear that this is an Apple Mountain Lion problem and one that Apple needs to address. As one frsutrated user noted :
>>There is no consistent solution for a user. Apple has to supply it. All you can do is submit a bug report to
Please, if you are encountering this problem you will save yourself a lot of wasted time and energey simple by joining me and others in asking Apple to fix this problem: Make a bug report.