

You need to mount the EFI partition in OS X (normally, it only gets mounted for system updates). The procedure to solve this is not for the faint of heart. This is what you see when you hold down ⌥ during boot. When you don't use the Boot Camp utility to remove Windows, the Windows boot image on your EFI partition is not removed. In the end, I'd like to just have both of these gone (and I guess any other hidden remnants of Windows that they might be indicating). I can't see where these icons would be coming from.

When I start up my Mac holding down option, I get the following.
#BOOTCAMP IS UNKNOWN DISK UTILITY APPLE UPDATE#
So but it turns out that when I "uninstalled" the Windows partition, something didn't quite update in the boot loader (I'm kind of fuzzy on my knowledge of the difference between a boot loader and a boot manager, so I might be using these terms incorrectly).

So now I've got a nearly out-of-box Macintosh HD partition everything on the Mac side works fine.īut lately, I find myself getting increasingly annoyed at the BSD coreutils among other things, and so I'd like to be able to dual boot into some version of Linux (probably Ubuntu or Xubuntu, but this is kind of arbitrary). Once back in OS X (Mavericks, but it was Mountain Lion when I installed Windows), I expended the default HFS+ partition to fill the full space of the SSD. I tried to do this through Bootcamp again, but for whatever reason this didn't work, so I booted up on a live Ubuntu USB and manually erased the NTFS partition for Windows. It never really worked, (it would freeze all the time, the WiFi would cut in and out, etc.) so I got rid of it. A while back, I installed Windows 8 on my MacBook Air (mid 2013 model) using Bootcamp.
