Technology for Single CD-ROM

Technology for Single CD-ROM

      A method for providing diagnostics on a CD-ROM that can be
booted and run in standalone mode or be mounted by AIX* and run as a
mounted file system is disclosed.

      The Diagnostic CD-ROM is packaged so that it can be booted and
run in standalone mode or be mounted by AIX and run as a mounted file
system.  This is accomplished by using the Rock Ridge based CD-ROM
File System along with a CD-ROM boot record on the diagnostic CD-ROM.
The two methods to run diagnostics from the CD-ROM follow:
  1.  Running Diagnostics when AIX is operational from hardfile:
        When diagnostics is invoked via the 'diag' command, the
         diagnostics program first determines if the diagnostic
subsystem
         has been installed on the hardfile.  If this is the case,
then
         diagnostics are run as normal.  If diagnostics have not been
         installed on the hardfile, then the program determines
whether
         there is a CD-ROM drive available on the system by querying
the
         device database.
        If no CD-ROM drive is available, then a message is
         presented to the user that diagnostics cannot be run since
they
         have not been installed.
        If a CD-ROM drive is available for use, then a message is
         presented to the user to insert the Diagnostic CD-ROM into
the
         drive for further proc...