Enthusiast reverse engineers worldβs smallest HDD to access data with help from an old Nokia N91 and OpenClaw β open source USB bridge unlocks 0.85-inch mechanical Toshiba drive from 2004 Latest from Tom's Hardware 17 March 2026 at 14:00 Maker Will Whang designed the MK4001MTD USB Bridge to facilitate the use of the worldβs smallest (0.85-inch) mechanical hard drives, originally released by Toshiba in 2004.