I own an early 2011 MacBook Pro running Mac OS X Mavericks. Recently, I tried to make 50 GB partition using Disk Utility but the whole process didn't complete, and I had to restart the system as it hanged (Even Force Quit wasn't working). Upon reboot, I saw that I was missing 50GB space. When I tried to verify the disk, it showed me the following error:
"Partition map check failed because no slices were found."
Can I fix it without using external drive? Please help.