Q: Bootcamp gives an error that says the startup disk must be formatted as a single MAC OS extended volume
I have a 13-inch Macbook Air Mid 2013 that's running OS X Yosemite 10.10.3. The Bootcamp version is 5.1.4.
I am trying to open bootcamp assistant but the error I get is "the startup disk must be formatted as a single MAC OS extended volume"
Please help
The output of a few commands that I ran is:
Sunil ~ $ diskutil list
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *121.3 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage 120.5 GB disk0s2
3: Apple_Boot Recovery HD 650.1 MB disk0s3
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh HD *120.1 GB disk1
Logical Volume on disk0s2
E2D3F138-CCFC-4A49-B4A1-14DB926C8861
Unlocked Encrypted
Sunil ~ $ sudo gpt -vv -r show /dev/disk0
Password:
gpt show: /dev/disk0: mediasize=121332826112; sectorsize=512; blocks=236978176
gpt show: /dev/disk0: PMBR at sector 0
gpt show: /dev/disk0: Pri GPT at sector 1
gpt show: /dev/disk0: Sec GPT at sector 236978175
start size index contents
0 1 PMBR
1 1 Pri GPT header
2 32 Pri GPT table
34 6
40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
409640 235298736 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
235708376 1269760 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
236978136 7
236978143 32 Sec GPT table
236978175 1 Sec GPT header
Sunil ~ $ sudo fdisk /dev/disk0
Disk: /dev/disk0 geometry: 14751/255/63 [236978176 sectors]
Signature: 0xAA55
Starting Ending
#: id cyl hd sec - cyl hd sec [ start - size]
------------------------------------------------------------------------
1: EE 1023 254 63 - 1023 254 63 [ 1 - 236978175] <Unknown ID>
2: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
3: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
MacBook Air, OS X Yosemite (10.10.3)
Posted on Nov 3, 2015 8:41 AM