The hard drive on my MacBook Pro has two partitions. One with the OS and the other with data.
Yesterday, from a USB boot drive, I performed a clean installation of Mountain Lion to the OS drive. I created the USB boot installer from InstallESD.dmg that I received from purchasing the OS from the Mac App Store.
Now I can't see or mount my data partition. I'm wondering if there's a problem with the MBR. In Disk Utility it shows up as "disk0s4", but it's greyed out.
Any ideas on how I can mount the data partition so I can get my data off it?
For diskutil list disk0
the result is:
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.1 GB disk0
1: EFI 209.7 MB disk0s1
2: Apple_HFS MacBook OS 99.5 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
4: 46860E2C-2310-4F96-99F6-616D0B4CB55D 399.6 GB disk0s4
Here's the result of diskutil info /dev/disk0s4
Device Identifier: disk0s4
Device Node: /dev/disk0s4
Part of Whole: disk0
Device / Media Name: MacBook Data
Volume Name: Not applicable (no file system)
Mounted: Not applicable (no file system)
File System: None
Partition Type: 46860E2C-2310-4F96-99F6-616D0B4CB55D
OS Can Be Installed: No
Media Type: Generic
Protocol: SATA
SMART Status: Verified
Total Size: 399.6 GB (399629668352 Bytes) (exactly 780526696 512-Byte-Blocks)
Volume Free Space: Not applicable (no file system)
Device Block Size: 512 Bytes
Read-Only Media: No
Read-Only Volume: Not applicable (no file system)
Ejectable: No
Whole: No
Internal: Yes
Solid State: No
InstallESD.dmg
alone (without Install OS X Mountain Lion.app) to produce that USB boot disk? Please edit the opening question to include the information … and for the moment, set aside thoughts of other machines; let's focus on this one – thanks.Install.ESD
was not applicable to all Lion-capable Macs. Wonder whether the same is true for Mountain Lion.