The 1990s saw a fierce battle between manufacturers for high-capacity removable disk storage. But some -- like the Avatar Shark -- lost even before they hit the market.

Sources:
"A Gig In Your Pocket," PC World, March 1998.
"Shark 250," PC Magazine, May 6, 1997.
Computer History Museum page on Avatar 170MB drive: https://www.computerhistory.org/colle...
"Read the Instructions," PC Magazine, February 10, 1998.
"Dauphin adds removable cartridge to notebook," InfoWorld, November 2, 1992.
"State of the Slate: Pen-based Computers," PC Magazine, March 30, 1993.
"Avatar launches hard drive targeted at road warriors," Computerworld, March 17, 1997.
"Micron offers Zip as default disk drive," InfoWorld, February 23, 1998.
"Shark price tags dive," Computerworld, August 18, 1997.
"Watchdog," Maximum PC, December 1998.
"A plethora of products," Electronic Design, November 22, 1993.

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