The question is a little more complicated than the title may suggest.
After a bad experience with Windows 10, I tried to downgrade, long story short, Windows 7 is borked. I installed Ubuntu, creating a 20GB EXT4 and 6GB swap partition in the process. I'm keen to access the rest of the 700GB or so of files that are still swimming around the hard drive, but am unsure of how to proceed.
When I installed it, I left the last partition as 'unallocated', which is where everything else is. Does that mean that the data is lost? Or is it still possible to re-allocate that space and find the files inside?
I'd greatly appreciate any help