I created a partition to run Snow Leopard on my computer running El Capitan and no longer need it. I allocated 20GB to that partition. Here's what I've done. I first go into Disk Utility, select my partition and click 'Erase'. It apparently erases everything but there is still 67.4 MB being used on the partition that I can't remove:
If I go into finder this is what I see on that partition:
Those are hidden files obviously and I can't delete them. I then go to the hard drive itself and click 'Partition' but when I do that and select the partition I want to remove, the minus button isn't an option:
I can't manually resize the partitions either (I want to re-allocate the disk space to my main drive).
Any ideas on why I can't remove the partition?
Best Answer
Another cause of the "minus" button being greyed out in Disk Utility is that it doesn't allow you to delete the first partition on the disk.