Bootcamp Removal

Hi, I'm on a MacBook Air running on version 10.11.6 of OS X El Capitan. I am trying to remove bootcamp from my Mac so that I can get the 20GB of my 120GB.

If I press continue in Boot Camp Assistant, I get a notice that "the startup disk cannot be partitioned or restored to a single partition."

"The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Assistant for installing Windows."

What can I do to proceed?

Make sure you have a good backup in place. Then get another external drive to clone your OS disk drive to. After you test the clone and are sure everything you need is on there, then, while still booted into the external clone drive, you can erase your internal OS drive. You can open Disk Utility, and erase the internal drive. I'm not sure, but if you select the disk drive, and not the drive partition, it should also remove the Boot Camp partition as well.

ferrarr said:

Make sure you have a good backup in place. Then get another external drive to clone your OS disk drive to. After you test the clone and are sure everything you need is on there, then, while still booted into the external clone drive, you can erase your internal OS drive. You can open Disk Utility, and erase the internal drive. I'm not sure, but if you select the disk drive, and not the drive partition, it should also remove the Boot Camp partition as well.

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What do you mean by have a good backup? Will I have to backup ALL the files on my computer?

Surely you did that before installing BootCamp? Also all hard drives fail sooner or later, even SSDs so a backup is always vital. For mine I prefer to clone the hard drive to an external usinf SuperDuper.

What do you mean by have a good backup? Will I have to backup ALL the files on my computer?

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He means backup all the files on your OS X partition. Don't worry about what was in the Boot Camp partition as you're removing that anyway. You can backup using Time Machine if you have no other backup program.

When BootCamp is installed and you start BootCamp Assistant, it is normal procedure for your Mac to ask if you want to remove BootCamp. No chance you tried to remove with Disk Utility first?