IBM Professional Series User Manual page 62

minidisk acceptable to CMS, refer to the CMS FORMAT
command description in Chapter 7, "VM/PC Commands"
on page 7-1.
The "Mode" letter can be either R (read) or W (read/write).
If the disk is read only, the disk can not be modified, that is
to say the virtual machine can not write on the disk.
Obviously it would have to be read/write at some point in
time to create it in the first place, but it can be changed to
read only after it is built. A mini disk can also be copied to
the real disk from another disk. A minidisk can also be
copied (using DOS) from one disk drive to another. This
permits you to move a minidisk from one VM/PC machine
to another via diskette(s).
The DOS file name associated with a minidisk can be
determined as follows. The drive letter is specified on
UPDATE MINIDISK screen. The file name is the user ID of
the owner of the minidisk, and the file extension is the
minidisk address. For example, the CMS 100 disk as
supplied with the VM/PC system will be named
C:CMS.100.
The Read-share and Write-share passwords are optional.
They permit links to be performed to the minidisk without
having the links defined in the Configuration File. Such links
are performed using the LINK and ACCESS commands
described in Chapter 7.
The links defined in the Configuration file (using the
UPDATE LINK screen of the Configurator) do not require
Read-share or Write-share passwords and take effect
automatically upon logon to the Local 3277 Session.
If these passwords are defined for a minidisk, other users of
the system who know the passwords may link to and access
the data on the minidisk.
If
you want to let users of the
system link to a minidisk to read its files, you must define a
Read-share password for the minidisk. If a Read-share
password is not defined, the minidisk will only be readable
by its owner and by users with links to the minidisk defined
in the Configuration file.
Chapter 3. Configuring Your VM/PC System 3-15