JockPond

Help I accidentally downloaded the "Windows 10 Download tool" (i'm running 8.1) onto my 2 terrabyte usb drive thinking it would create a small folder file / partition and instead it looks like it has formatted the drive and is using 3.9GB on a formatted 39.9 GB partition. I cannot see the rest of the disc which has important work and personal backups on it. Recuva only sees the "new" formatted partitions