I'm coming from Super User Community, since I wasn't aware of this specific one.
My first and foremost care is the files on my system, I have been slacking on making backups (I know, it's really bad) and I really would at least want to transfer my files before I fully reinstall my system.
This was my original problem (still kind of is): After 'removing' Ubuntu from MacBook it cannot boot to OSX but loads Grub 2
Summary: I had a dual-boot OSX/Ubuntu, tried to remove Ubuntu, messed something up with the original Mac OS partition, can't boot or use the Mac OS (or any OS, since Ubuntu was cleared)
I made a Yosemite Boot USB and started up Disk Utilities from that:
- I see my MAC OS is now called 'disk0s2' and is greyed out
- It had no partition type
- I cannot use the functions: Activate (it does nothing), Activate
journaling, Convert or Schijf-EHBO (not sure what it's called in
english but is probably Disk Repair).
This is the information from disk0s2 and the Disk Utility screen:
(had to remove because I dont have enough reputation)
Is there any way I can repair this partition? Can I change its structure to what it was previously, soI can atleast grab some files from there?
Other info:
- I have a MacBook Pro Retina (2010)
- Before the crash it ran El Capitan
- Partition 'Naamloos' might've been part of the Mac OS parition?
- Recovery HD has been started up from but it cannot load my OS. (read
my other post)
EDIT1: I might have the same problem as here as some others
Additional info:
diskutil list:
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *251.0 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF 239.9 GB disk0s2
3: Apple_HFS Recovery HD 650.0 MB disk0s3
4: Apple_HFS Naamloos 10.1 GB disk0s4
/dev/disk1 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme +2.1 GB disk1
1: Apple_HFS OS X Base System 2.0 GB disk1s
/dev/disk2 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +5.2 MB disk2
gpt -r show disk0:
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 468597448 2 GPT part - FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF
469007088 1269536 3 GPT part - 48465300-0000-11AA-AA11-00306543ECAC
470276624 19695313 4 GPT part - 48465300-0000-11AA-AA11-00306543ECAC
489971937 262782
490234719 32 Sec GPT table
490234751 1 Sec GPT header
dd if=/dev/disk0s2 count=3 | vis -c:
3+0 records in
3+0 records out
1536 bytes transferred in 0.000682 secs (2252605 bytes/sec)
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EDIT4:
These messages were shown after doing the removing and readding the partitions:
The diskutil list after all the steps in @klanomaths answer (thanks for all the help by the way!)
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *251.0 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage 239.9 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
4: Apple_HFS Naamloos 10.1 GB disk0s4
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *61.8 GB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_HFS Install OS X Yosemite 61.5 GB disk1s2
/dev/disk2
#: TYPE NAME SIZE IDENTIFIER
0: Apple_partition_scheme *6.0 GB disk2
1: Apple_partition_map 30.7 KB disk2s1
2: Apple_HFS OS X Install ESD 6.0 GB disk2s2
/dev/disk3
#: TYPE NAME SIZE IDENTIFIER
0: Apple_partition_scheme *1.3 GB disk3
1: Apple_partition_map 30.7 KB disk3s1
2: Apple_HFS OS X Base System 1.3 GB disk3s2
/dev/disk4
#: TYPE NAME SIZE IDENTIFIER
0: untitled *5.2 MB disk4
/dev/disk5
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk5
/dev/disk6
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk6
/dev/disk7
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk7
/dev/disk8
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk8
/dev/disk9
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk9
/dev/disk10
#: TYPE NAME SIZE IDENTIFIER
0: untitled *6.3 MB disk10
/dev/disk11
#: TYPE NAME SIZE IDENTIFIER
0: untitled *2.1 MB disk11
/dev/disk12
#: TYPE NAME SIZE IDENTIFIER
0: untitled *1.0 MB disk12
/dev/disk13
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk13
/dev/disk14
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk14
/dev/disk15
#: TYPE NAME SIZE IDENTIFIER
0: untitled *1.0 MB disk15
/dev/disk16
#: TYPE NAME SIZE IDENTIFIER
0: untitled *6.3 MB disk16
Offline
Logical Volume Macintosh HD on disk0s2
71A45184-6D4E-4159-8EFA-3DEC31F9C958
Locked Encrypted
Also, the disk0 show:
-bash-3.2# gpt -r show disk0
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 468597448 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
469007088 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
470276624 19695313 4 GPT part - 48465300-0000-11AA-AA11-00306543ECAC
489971937 262782
490234719 32 Sec GPT table
490234751 1 Sec GPT header
Best Answer
To add an answer exactly fitting to your case I slightly modified my answer in the linked "duplicate" and posted it here again.
The second as well as the third partition of your internal disk got the wrong partition type, your data probably won't be lost.
A bootable OS X partition (except the Recovery HD) either has the GUID 48465300-0000-11AA-AA11-00306543ECAC for a standard OS X partition or the GUID 53746F72-6167-11AA-AA11-00306543ECAC for a CoreStorage partition. The FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF is an unknown partition type (but not no partition like the 000000-0000-0000.... one).
The first block of a standard OS X partition doesn't contain non-zeros, the first block of a CoreStorage partition contains some non-zeros. To get the first 3 blocks of a partition you have to use a substitute for hexdump/xxd (both aren't available in Recovery Mode/OS X Installer boot drive). The best I have found is
dd if=/dev/diskXsY count=3 | vis -c.The GUID partition table can be modified with
gpt. gpt only writes to the first 34 and the last 33 blocks of a disk(512) or the first 6 and and last 5 blocks of a 4k disk. Modifying the partition table (even falsely) doesn't alter the content of any volume on your disk, if you don't intialize or repair a volume/disk by request. You may verify it though.diskutil listGet an overview of your internal disk with the disk identifier found in the previous command. Below I assume the disk identifier of your internal disk is disk0 (replace it with the one you have found in your environment)
diskutil umountDisk disk0vis the first 3 blocks of the FFFF... partition:
If you had a standard partition previously the first 1024 Bytes only contains non-printable (zeros): \0\0... After ~Byte 1030 you will see the following sequence: \0HFSJ\0
If you had a CoreStorage partition some non-zeros in the first 512 Bytes and the string CS (
...\0CS\^A...) are shown:Now remove the second and the third partition:
If you get an error message like "resource busy" just unmount the disk again or unmount stubborn volumes with
diskutil umount disk0sX.Re-add the recovery partition with the proper type:
Re-add the main partition with the proper type:
Either a normal OS X partition (if you have found the typical traces of a normal partition in the
dd ... visstep):or (if you have found the typical traces of a CoreStorage partition):
Your disk should finally look like this if you have found a standard OS X partition:
or this, if you have found a CoreStorage volume:
Finally verify/repair the disk with
diskutil verifyDisk disk0and/ordiskutil verifyVolume disk0s2. If a repair is needed use repair (instead of verify) as prefix in the above commands but contact me before repairing it and send me the error message.