I'm trying to shrink my Time Machine partition to make more space for Windows games. The shrink went perfectly, but I was left with a chunk of free space Disk Utility wouldn't let me make a partition in. I would have to delete the free space and make a new partition.
I couldn't figure out how to get it to not resize my Time Machine partition again, and diskutil doesn't seem to be able to create new partitions from scratch, only split and merge them. So I turned to gpt using this answer.
After running gpt add -b 1739919576 -s 88606504 -t hfs disk2, Disk Utility could see the new empty partition just fine. Then I tried to delete the partition after it (it was 500MB with nothing on it), and resize the new one to compensate. Then Disk Utility hung on "Waiting for partitions to activate". I force quit it, which in retrospect was a pretty stupid idea.
Now I can use diskutil and gpt just fine, but when I open Disk Utility it just hangs immediately. Any ideas?
Before:
/dev/disk2 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk2
1: EFI EFI 209.7 MB disk2s1
2: Apple_CoreStorage SG-1 400.0 GB disk2s2
3: Apple_Boot Boot OS X 134.2 MB disk2s3
4: Apple_CoreStorage SG-1_TM 490.4 GB disk2s4
5: Apple_Boot Boot OS X 134.2 MB disk2s8
6: Apple_HFS tmp 500.2 MB disk2s6
7: Microsoft Basic Data WTransfer 63.2 GB disk2s7
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 781240488 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
781650128 262144 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
781912272 957745160 4 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
1739657432 262144 5 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
1739919576 88868648
1828788224 976896 6 GPT part - 48465300-0000-11AA-AA11-00306543ECAC
1829765120 123496448 7 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
1953261568 263566
1953525134 32 Sec GPT table
1953525166 1 Sec GPT header
Current state:
/dev/disk2 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk2
1: EFI EFI 209.7 MB disk2s1
2: Apple_CoreStorage SG-1 400.0 GB disk2s2
3: Apple_Boot Boot OS X 134.2 MB disk2s3
4: Apple_CoreStorage SG-1_TM 490.4 GB disk2s4
5: Apple_Boot Boot OS X 134.2 MB disk2s5
6: Microsoft Basic Data WTransfer 63.2 GB disk2s6
7: Apple_HFS 45.4 GB disk2s7
gpt show: disk2: mediasize=1000204885504; sectorsize=512; blocks=1953525167
gpt show: disk2: PMBR at sector 0
gpt show: disk2: Pri GPT at sector 1
gpt show: disk2: Sec GPT at sector 1953525166
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 781240488 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
781650128 262144 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
781912272 957745160 4 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
1739657432 262144 5 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
1739919576 88606504 7 GPT part - 48465300-0000-11AA-AA11-00306543ECAC
1828526080 1239040
1829765120 123496448 6 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
1953261568 263566
1953525134 32 Sec GPT table
1953525166 1 Sec GPT header
Update
Deleting the new partition, rebooting, and creating a new partition exactly filling the available space (taking into account the necessary 262144-sector gaps) fixed the problem...until I tried to resize a partition again. When I tried to delete the partition after the new one and again grow it to fit, it got stuck again on "Waiting for partitions to activate".
I ran a diskutil list, which seemed to indicate the operation succeeded and the partition had been properly grown. So I ran diskutil eject disk2, which worked fine. Then I force-quit Disk Utility, and strangely, it seemed to have no adverse effects. It didn't hang when I opened it again.
