In 2004, Toshiba launched a 0.85-inch hard disk drive with a capacity of 2 GB. This tiny single-platter drive was the smallest commerically available hard disk drive, and due to its small size used a permanently-attached ribbon cable for connection since it was only designed to be used as an internal drive.
There appear to be just three devices that ever used the drive – the Nokia N91 mobile phone, the Cowon iAudio 6 and the Imation Micro Hard Drive.
The Nokia N91 was a mobile phone that also made a major feature of being a music player, with dedicated media keys on the front and excellent audio quality. When released, it contained a 4 GB version of the 0.85-inch hard drive that could store up to 3,000 songs, and was aimed as a challenger to the Apple iPod. Later in 2006, an 8 GB variant was introduced, but the N91 was discontinued in 2007.
The Cowon iAudio 6 was a media player, for music, video and photos, and was also introduced in 2006. It also used the 4 GB version of the drive. However, it was replaced in 2007 by the iAudio 7 which offered 4, 8, or 16 GB of storage, but using flash memory.
The Imation Micro Hard Drive, introduced in 2005, was a USB storage device making use of the Toshiba drive rather than the more usual flash memory. It was shaped like a padlock, and offered either 2 GB or 4 GB of storage. However, it was slower than flash memory and its quirky design made it more bulky.
Figures
Dimensions: 32 mm × 24 mm × 5 mm
Capacity: 2, 4 or 8 GB