Unable to remove partition

[xinweittm]

I have been using bootcamp in the past but recently, I have stopped using it. I tried removing the partition using the Bootcamp Assistant but halfway through, it failed and an error popped up. I am unable to remove it using Disk Utility as it says "Disk Utility cannot modify this disk because it contains CoreStorage physical volumes. Use command line diskutil instead". However, the partition is also not shown when I tried "diskutil list" in Terminal! The partition is now listed as "Free Space". Is there any way I can get this disk space back?? I am using a Macbook (Old white one) and running OSX Lion.

 

[808?]

How you tried to create a new partition in the free space?

You may want to adjust the size of your OSX a little perhaps (expand it to absorb all the free space).

 

[xinweittm]

I am unable to modify the partition as disk util says it "contains corestorage physical volumes". Please help! I'll try to upload a screenshot of the partition in diskutil later.

 

[xinweittm]

PLEASE HELP!! IT'S 40GB!!

 

[simsaladimbamba]

You probably use FileVault?
If so, can this help?
Do you have access to an external HDD, where you could clone your "Macintosh HD" onto?