aa...aa file needs to be initialized as OpenTP1 file; enter "t" to cancel or "g" to continue.

This message asks the operator whether or not to initialize the specified file.

aa...aa: Name of the OpenTP1 file system area to be initialized

S: Performs processing according to the operator's specification. If neither of the option is specified, the message requesting the operator's response will appear again.

O: Specify either of the following.

t: Cancel processing.

g: Continue processing.