Can't delete BOOTCAMP partition Bought a second hand iMac that had two partitions on the HDD. One for Mac, one for Windows. Using disk utility I erased the BOOTCAMP partition and formatted it to MacOS Extended (Journaled). All went well until I tried to remove the BOOTCAMP partition. The minus option is not enabled and I can't seem to fin any other way to delete it.




This is what I've tried:


Reboot on recovery mode and try to delete using disk utility. (Same result)
Use Bootcamp assistant to remove the partition. Didn't work as windows is gone from that partition.


How can delete it? I want to have just one partition.
I found the answer in this Apple Support Communities thread.

This is what I did:

In terminal executed diskutil list and the output was

#:                       TYPE NAME                    SIZE       IDENTIFIER
0:      GUID_partition_scheme                        *1.0 TB     disk0
1:                        EFI EFI                     209.7 MB   disk0s1
2:                  Apple_HFS Macintosh HD            542.3 GB   disk0s2
3:                 Apple_Boot Recovery HD             650.0 MB   disk0s4
4:                  Apple_HFS BOOTCAMP                449.0 MB   disk0s4
5:                 Apple_Boot                         650.0 MB   disk0s5


Then I executed the following commands: 

diskutil eraseVolume jhfs+ BC1 disk0s4
diskutil list


And the output was: 

#:                       TYPE NAME                    SIZE       IDENTIFIER
0:      GUID_partition_scheme                        *1.0 TB     disk0
1:                        EFI EFI                     209.7 MB   disk0s1
2:                  Apple_HFS Macintosh HD            542.3 GB   disk0s2
3:                 Apple_Boot Recovery HD             650.0 MB   disk0s4
4:                  Apple_HFS BC1                     449.0 MB   disk0s4


then:

diskutil eraseVolume fat32 BOOTCAMP disk0s4


After that I opened Boot Camp Assistant and I was able to restore the HD to a single partition.