Q: Deleted windows partition can't be removed

Can you post the output of the following Terminal commands?

diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

Sudo commands will prompt you for your password. The command may also warn you about improper use and potential data loss, if used incorrectly.

In Recovery console, you can copy the text, and then close the Terminal and switch to Safari and post the text. It is a bit tedious to switch back and forth, though. Recovery Console does not allow Terminal and Safari to be up at the same time, and it may be a bit slow.

You can OS X: Installing OS X on an external volume - Apple Support and boot from this external OSX installation and look at your internal disk and run Safari at the same time.

In Recovery console the last command does not need "sudo", since you are already root. Run it without the the "sudo".

In your diskutil list output, you can see Recovery HD between OSX and Bootcamp, so you cannot merge partitions without losing Recovery HD. If you need it back, you will need to boot from an external OSX installation, merge it, and then re-install OSX via the Recovery Console (not booted from the external OSX installation) to get Recovery HD back

1. You have lost your EFI partition. OSX will not work.

2. You may have mistakenly thought you have a CS volume, but there is none. diskutil list shows a HFS partition.

3. Your GPT is corrupt (at least the primary table is). The secondary table can be recovered, but you will need GPT Fdisk - http://sourceforge.net/projects/gptfdisk/

4. You will need to install OSX on an external disk to be able to install GPT Fdisk (aka gdisk).

No. I cannot tell that you need to wipe it. Do you have a Time Machine backup of your OSX installation before this started? The best option is to boot from an external OSX installation and install Gdisk, which will tell us more. diskutil list being correct shows that it is possible to recover, without loss of data.