Using HDD Low Level Format Tool v4.40 on a recent model Toshiba Satellite C50-A5175FM there's a device detected, new for my experience as I've never seen it before: BUS: FBVIRTUAL MODEL: Msft Virtual Disk Firmware: 1.0 Serial number: 000000 LBA: 6144 Capacity: 3145.72 KB WTH is that?
It is definitely some sort of Microsoft virtual disk... it's tiny though. What operating system is on the laptop? Does it have a cache drive?
Thank you guys I found what's going on. Turns out I ran HDD LLF tool from within a RamOS (Win8PESE) for the very first time in my life and there's where it shows that virtual drive. After installing installing Windows 8.1 on this laptop on its HDD, I ran the tool once again the virtual drive is gone L0L. I think it has something to do with that RamOS, interesting though.