Most of the data is probably still there on the drive. But the filesystem data that says where it all actually is stored is probably irreplaceably gone. If some

Most of the data is probably still there on the drive. But the filesystem data that says where it all actually is stored is probably irreplaceably gone. If some of that can be recovered then it should be possible to recreate individual files. Without it someone would have to guestimate where all the files are and then maybe manually piece them together (a single file may be in fragments in different parts of the disk). They'd also have to differentiate old deleted versions of files from the most recent deleted versions. So yeah, it could technically be recovered, but it's going to be a very big chore.