Appeal No. 1999-0264
Application No. 08/573,582
identification information possessed by the predetermined
sector of said storage medium, and when at least one of said
data write command and said identification information
indicates data write inhibition and a data write operation is
requested by the higher rank device, said microprocessor
informs said higher rank device of a write inhibition error;
a state display means including a counter connected to
said microprocessor, said microprocessor collates whether the
predetermined sector of said storage medium indicated by said
data write command is already set in said data write
inhibition, and when at least one of said data write command
and said identification information indicates data write
inhibition, said counter on the disk storage device displays a
data write inhibition error of said predetermined sector in
response to an order given by said microprocessor; and
wherein when a data write command comes together with a
data write inhibition from the higher rank device, the
predetermined sector of the storage medium is decided whether
or not the sector is permitted to write data by said
identification means, the data is written into the
predetermined sector when the predetermined sector is a data
write permission, and the predetermined sector is set to a
data write inhibition.
The Examiner relies on the following references:
Purvis 4,549,295 Oct. 22,
1985
Kobayashi et al. (Kobayashi) 4,760,566 Jul.
26, 1988
Director Re 33,328 Sep. 11,
1990 Saldanha et al. (Saldanha) 5,265,230 Nov.
23, 1993
Ottesen et al. (Ottesen) 5,369,533 Nov.
29, 1994
(filed Dec. 30, 1992)
Nakajima et al. (Nakajima) 5,525,902 Jun. 11,
1996
4
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