dubai mac
Level 1
(4 points)
Q: Help Required with MacMini Fusion Drive
Hello all
I recently purchased a second hand late 2012 MacMini i7 wth a fusion drive. The previous owner had created a windows partition. I won't to return the machine to its original out of the box factory setup for my use as I have no need to run windows on it.
I am struggling to get the fusion drive to fuse. Currently I have two separate disks which I have named 329GB and 781GB. Disk Utility shows both drives are fine. I have rebooted in Recovery Mode to use the online disk utility and the drives do not show up as red and so there is no option to fix them.
I have used Terminal (following some reading online) and it provides the following information:
+-- Logical Volume Group F92C23DE-59E6-48E1-9525-07BAA362792C
=========================================================
Name: Macintosh HD
Status: Online
Size: 790333857792 B (790.3 GB)
Free Space: 98304 B (98.3 KB)
|
+-< Physical Volume 5E674D49-E043-46E0-8B68-4A1BE6F198D6
| ----------------------------------------------------
| Index: 0
| Disk: disk0s2
| Status: Online
| Size: 120988852224 B (121.0 GB)
|
+-< Physical Volume 7BA0BD21-C934-4179-B432-8CE91651DA29
| ----------------------------------------------------
| Index: 1
| Disk: disk1s2
| Status: Online
| Size: 669345005568 B (669.3 GB)
|
+-> Logical Volume Family 9350CC2D-8020-42E4-9C64-A2F1C4BC3DFB
----------------------------------------------------------
Encryption Type: None
|
+-> Logical Volume C94C8E95-391F-48B9-8920-2BF7C0646691
---------------------------------------------------
Disk: disk2
Status: Online
Size (Total): 781826392064 B (781.8 GB)
Revertible: No
LV Name: 781GB
Volume Name: 781GB
Content Hint: Apple_HFS
LVG Type: Fusion, Sparse
None of the data on the drive(s) is critical as it is all available on my old Mac mini and can be re-migrated again later.
Any advice on how to return the Fusion drive to its original out of the box state please?
Airport Time Capsule 802.11ac, OS X Mavericks (10.9.5)
keg55
Level 6
(8,429 points)
I don't know what OS your 2012 MM came shipped with, but you can try the following which should delete your Fusion Drive; then you should be able to fuse it back together using Disk Utility.
Restart in Internet Recovery (Command+OPTION+R). You should see a spinning globe and after 3-5 minutes you should see the OS X Utilities menu.
On the Menu bar, select Utilities then launch Terminal.
Type diskutil cs list to get the Fusion Drive's Logical Volume UUID and the Logical Volume Group UUID. In your 1st post, the Logical Volume UUID is C94C8E95-391F-48B9-8920-2BF7C0646691
Represented on the line that reads:
+-> Logical Volume C94C8E95-391F-48B9-8920-2BF7C0646691
The Logical Volume Group UUID is F92C23DE-59E6-48E1-9525-07BAA362792C
Represented on the line that reads:
+-- Logical Volume Group F92C23DE-59E6-48E1-9525-07BAA362792C
Now delete the Logical Volume by typing diskutil cs deleteVolume C94C8E95-391F-48B9-8920-2BF7C0646691
Next, delete the Logical Volume Group by typing diskutil cs delete F92C23DE-59E6-48E1-9525-07BAA362792C
You should be able to close Terminal after the above has completed successfully and launch Disk Utility. If the OS that came pre-installed was OS X Mountain Lion, you should see the SSD and HDD drives in RED. Selecting one of the drives should show a windows to IGNORE or FIX. Choose FIX to refuse the drives into a Fusion Drive. When this completes you can close Disk Utility and Reinstall OS X Mountain Lion.
