Errata for .DSK driver.

IDEHD:

(1) Fujitsu M1624:
    System would hang intermittently (about 30%-40% of the time) right
    after the drive was loaded    

(2) Seagate ST32132A,Seagate ST38420:
    It has the problem of getting an ABEND error after a test is chosen 
    from the Testcon test menu. 

(3) Fujitsu MPB3096:
    Hangs after driver is loaded


IDECD:
(1) Sony CDU311:
    incomaptibility.
