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Disk Utility error "Mediakit reports partition map too small. 3TB

So I have a Mac Pro with a 3TB inside, but Snow Leopard won't recognize the whole 3TB. I can format it, but it only allows 801.23 GB. The remaining space is left as Free Space. When I try to resize the Volume, I get this:


I get this error: "Partition failed with an error." MediaKit reports partition (map) too small.


Can someone help me find a way to utilize the 3TB as it was intended to?


My setup:

MacPro1,1

10.6.8


ST3000DM001-1CH166:


Capacity: 3 TB (3,000,592,982,016 bytes)

Model: ST3000DM001-1CH166

Removable Media: No

Detachable Drive: No

BSD Name: disk0

Rotational Rate: 7200

Medium Type: Rotational

Bay Name: Bay 1

Partition Map Type: GPT (GUID Partition Table)

S.M.A.R.T. status: Verified


Volumes:

Capacity: 209.7 MB (209,715,200 bytes)

Writable: Yes

BSD Name: disk0s1

BK:

Capacity: 801.23 GB (801,225,752,576 bytes)

Available: 737.7 GB (737,702,121,472 bytes)

Writable: Yes

File System: Journaled HFS+

BSD Name: disk0s2

Mount Point: /

Mac Pro, Mac OS X (10.6.8), 3TB

Posted on Feb 15, 2014 9:13 PM

Reply
2 replies

Feb 16, 2014 11:44 AM in response to Babyboi

Anyways, i've made it work. My process was this:


Problem:

1. I put MacPro into Target Disk Mode to mount to my 2011 MacBook Pro. Disk Utility on MBP would only see 800GB.


Solution:

2. Booted the SL CD on the MacPro and ran Disk Utility from there. In the partitions tab, I chose 1 partition, and hit apply.

3. "could not unmount disk."

4. So I tried to partition it again, and it worked this time. 3TB Available.

5. I then booted the MacPro using an external HD with OSX on it to run CarbonCopyCloner to reimage my backup.


I hope this helps anyone else with the same problem.

Disk Utility error "Mediakit reports partition map too small. 3TB

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