How to erase and create a Fusion Drive: Difference between revisions
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<font color="red">'''You are doing this at your own risk! Make backups!'''</font> | <font color="red">'''You are doing this at your own risk! Make backups! Think twice!'''</font> | ||
== The Problem == | == The Problem == |
Revision as of 12:43, 5 September 2013
You are doing this at your own risk! Make backups! Think twice!
The Problem
Maybe you destroyed the partition map, the partitions won't resize or the Mac OS X Installer just refuses to install on the Fusion Drive.
The Solutions
Solution 1 (better)
- Boot in Recovery Mode (⌘-R) or NetBoot
- Open Terminal
- Erase Fusion Drive
-bash-3.2# diskutil coreStorage list CoreStorage logical volume groups (1 found) | +-- Logical Volume Group 529DC00D-FA54-49AD-B7F7-F98E33EBFCE8 ========================================================= Name: Macintosh HD Status: Online Size: 1120333979648 B (1.1 TB) Free Space: 114688 B (114.7 KB) | +-< Physical Volume 0CDB5E98-69B0-4BC1-A20F-0B9B5BC20CC7 | ---------------------------------------------------- | Index: 0 | Disk: disk0s2 | Status: Online | Size: 120988852224 B (121.0 GB) | +-< Physical Volume B3B961EC-058C-48E4-A7D2-828829900694 | ---------------------------------------------------- | Index: 1 | Disk: disk1s2 | Status: Online | Size: 999345127424 B (999.3 GB) | +-> Logical Volume Family C137DC69-C3DC-42D6-9896-AA2F26824C0F ---------------------------------------------------------- Encryption Status: Unlocked Encryption Type: None Conversion Status: NoConversion Conversion Direction: -none- Has Encrypted Extents: No Fully Secure: No Passphrase Required: No | +-> Logical Volume 1D714029-D6B4-4FC0-BCCC-666F10FC0ED0 --------------------------------------------------- Disk: disk3 Status: Online Size (Total): 1111826497536 B (1.1 TB) Size (Converted): -none- Revertible: No LV Name: Macintosh HD Volume Name: Macintosh HD Content Hint: Apple_HFS -bash-3.2# diskutil coreStorage delete529DC00D-FA54-49AD-B7F7-F98E33EBFCE8 Started CoreStorage operation Ejecting Logical Volumes Destroying Logical Volume Group Erasing disk0s2 Initialized /dev/rdisk0s2 as a 113 GB HFS Plus volume with a 16384k journal Mounting disk Erasing disk1s2 Initialized /dev/rdisk1s2 as a 931 GB HFS Plus volume with a 81920k journal Mounting disk Finished CoreStorage operation -bash-3.2# diskutil list /dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *121.3 GB disk0 1: Apple_HFS 209.7 MB disk0s1 2: Apple_HFS Untitled 121.0 GB disk0s2 3: Apple_Boot Boot OS X 134.2 MB disk0s3 /dev/disk1 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *1.0 TB disk1 1: Apple_HFS 209.7 MB disk1s1 2: Apple_HFS Untitled 999.3 GB disk1s2 3: Apple_Boot Recovery HD 650.0 MB disk1s3 /dev/disk2 #: TYPE NAME SIZE IDENTIFIER 0: Apple_partition_scheme *1.3 GB disk2 1: Apple_partition_map 30.7 KB disk2s1 2: Apple_HFS Mac OS X Base System 1.3 GB disk2s2 /dev/disk4 #: TYPE NAME SIZE IDENTIFIER 0: untitled *524.3 KB disk4 […] -bash-3.2#
- Fusion Drive Recovery:
Close Terminal and open Disk Utility, click "Fest" (engl. "Fix")[1]: - Done!
Solution 2 (worse)
This solution permanently erases the Recovery Partition - that's why it's worse. But it might work better in some cases (or if you want to set up a Fusion Drive from non-Apple-components.
- Erase Fusion Drive
- diskutil coreStorage list
(to get Logical Volume Group UUID) - diskutil coreStorage delete <Logical Volume Group UUID>
(Erasing the Fusion Drive)
- diskutil coreStorage list
- Fusion Drive creation
- diskutil list
(find disk devices) - diskutil coreStorage create myLogicalVolGroup /dev/disk1 /dev/disk2
(Logical Volume Group creation) - diskutil coreStorage createVolume lvgUUID type name size, f.e. diskutil coreStorage createVolume 50B457C3-ADC6-4EDC-9ABA-FD8C6EEDE69A jhfs+ "Macintosh HD" 100%
(Logical Volume creation)
- diskutil list
- Links
- Notes:
- ↑ Ja, "Fest" - eine wunderbare Übersetzung von "Fix"