You can mount the CD-ROM, but all the file names are shortened or with semi-colons. You can't install the environment.
To enable successful installation from the CD,
your CD-ROM must be able to read the Rockridge format.
This format is an extension of the standard allowing long file names
(more than the 8+3 characters supported by the DOS format).
Version 4.1.3 or higher for SunOS
Version 2.0 or higher for DEC OSF/1
If you cannot update your operating system, contact ISE at email@example.com to get a tape.