Lost data from overlapping partitions error [ SOLVED ]

I started noticing that some of the free space left over from the partitions that I was deleting would remain separate from each other even though they were "unallocated" space on the drive. After looking at them with gparted I figured it was because one part of the drive was marked as a extended drive and even if the space was free it was still being separated by this flag.

I thought this was strange but I was able to merge some of the unallocated space by creating partitions, then merging then, and then deleting them, but apparently this was a bad idea because it made my main logical partition inside the extended partition corrupt somehow. It now says its not formatted and is taking up 0 bits when viewed in windows and partition tools say its 500gb but is a unknown file system/invalid format. Partition Magic says there was a overlap error and tried to fix it but no luck so far.


[ SOLUTION ]

I tried winternals disk commander and after scanning the drive for lost volumes for a few hours it was able to find the corrupted partition. Now I just need to see where I can back it up to.