The Free On-line Dictionary of Computing (30 December 2018):

Alan F. Shugart
Alan Shugart
Shugart, Alan F.

    The man who founded Shugart Associates and later
   co-founded Seagate Technology.  Alan Shugart left Shugart
   Associates in 1974 [did he quit or was he fired?] and took a
   break from the disk-drive business.  In 1979, he and Finis
   Conner founded a new company that at first was called Shugart
   Technology and later Seagate Technology.

   (2000-02-09)