Vol U Me I D, Owner 1 D, And Access Protection - IBM 5110 User Manual

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DISKETTE INITIALIZATION
The diskettes must be initialized before they can be used for storing
data. All IBM-supplied diskettes are initialized before they are shipped
to a customer. Reinitializing is not required unless:
• The diskette was exposed to a strong magnetic field.
• A defect occurred in one or two cylinders. In this case, initialization
can be used to take the bad cylinder(s) out of service and use one
or two of the alternate cylinders.
• A sector sequence other than the sequence existing on the diskette
is desired.
• A format (number of sectors per cylinder) other than the existing
format is desired.
See the IBM 5110 Customer Support Functions Reference Manual,
SA21-9311, for a description of the diskette initialization function.
VOLUME 10, OWNER 10, AND ACCESS PROTECTION
Each initialized diskette has volume
10,
owner
10,
and an
access-protect indicator. The volume 10 is the identification of the
diskette volume, and the owner
10
is the identification of the diskette
volume owner. The access-protect indicator is used to prevent
unauthorized access (reading and writing) to the diskette volume.
The )VOLIO command is used to display or change the volume
10
and
owner
10
or to change the access-protect indicator.