I've tried to install Kali Linux as dual boot with macOS. I've partitioned 20 GB on the side from 250 GB for that purpose but the installation didn't go as planned. So I decided to reboot macOS and just delete the partition.
When I went to Disk Utility, I didn't find the 20 GB partition anywhere, so based on google I've deleted them using the Terminal, but I ended up having FFFFFFF as a partition type on the 230 GB partition.
Apple tech told me to restart the device, and it wouldn't boot (obviously). I found a post here where somebody had same issue, but the last step didn't work.
I got stuck at Re-add the partition 2 and 3
diskutil umountDisk /dev/disk1
sudo gpt add -b 928144008 -i 3 -s 262144 -t 426F6F74-0000-11AA-AA11-00306543ECAC /dev/disk1
diskutil umountDisk /dev/disk1
sudo gpt add -b 409640 -i 2 -s 927734368 -t 53746F72-6167-11AA-AA11-00306543ECAC /dev/disk1
In recovery mode I've diskutil list
-bash-3.2# 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
/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 disk1s1
/dev/disk2 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +5.2 MB disk2
/dev/disk3 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk3
/dev/disk4 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk4
/dev/disk5 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk5
/dev/disk6 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk6
/dev/disk7 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk7
/dev/disk8 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +6.3 MB disk8
/dev/disk9 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +2.1 MB disk9
/dev/disk10 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +1.0 MB disk10
/dev/disk11 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk11
/dev/disk12 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk12
/dev/disk13 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +1.0 MB disk13
/dev/disk14 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +6.3 MB disk14
When I run fdisk /dev/disk0
-bash-3.2# fdisk /dev/disk0
Disk: /dev/disk0 geometry: 30515/255/63 [490234752 sectors]
Signature: 0xAA55
Starting Ending
#: id cyl hd sec - cyl hd sec [ start - size]
------------------------------------------------------------------------
1: EE 0 0 1 - 1023 254 63 [ 1 - 409639] <Unknown ID>
*2: DA 1023 254 63 - 1023 254 63 [ 409640 - 449218744] <Unknown ID>
3: 83 1023 254 63 - 1023 254 63 [ 449630208 - 24027136] Linux files*
4: 82 1023 254 63 - 1023 254 63 [ 473657344 - 16576512] Linux swap
When I run gpt -r show /dev/disk0
-bash-3.2# gpt -r show /dev/disk0
gpt show: /dev/disk0: Suspicious MBR at sector 0
start size index contents
0 1 MBR
1 1 Pri GPT header
2 32 Pri GPT table
34 6
40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
409640 449218744 2 MBR part 218
449628384 1824
449630208 24027136 3 MBR part 131
473657344 16576512 4 MBR part 130
490233856 863
490234719 32 Sec GPT table
490234751 1 Sec GPT header
What can I do to recover my macOS partition?
csrutil disable), reboot to Internet Recovery Mode and try it again. Additionally I would zero the MBR (sudo dd if=/dev/zero of=/dev/disk0 bs=512 count=1) – klanomath Jan 01 '18 at 12:24