Apple Macintosh 6500 - Manual (Page 147)

You can’t open a document on a CD-ROM disc.
m Try opening the application program first; then open the document.
m Read the manual that came with your CD-ROM disc. Some discs come with
software that you need to install on your computer’s hard disk before using
the CD-ROM disc.
You can’t save changes you make to information on a CD-ROM disc.
m A CD-ROM disc is a read-only medium. This means that information can
be read (retrieved) from it, but not written (stored) on it. You can save the
changed information on a hard disk or floppy disk.
Problems using ISO 9660 or High Sierra discs
You cannot access files on a CD-ROM disc that uses the ISO 9660 or High Sierra format.
m Discs in the ISO 9660 and High Sierra disc formats have version numbers
attached to file names. Some application programs need these version
numbers in order to work with files. To make the version numbers
available to applications on your computer, follow these instructions.
Drag the CD-ROM disc icon to the Trash. When the tray opens, hold down
the Option key while you push the tray back in. Continue to hold down the
Option key until the disc icon reappears on the screen, then release the
Option key. The application you are using should now be able to locate file
names on that CD-ROM disc.
m Make sure that Foreign File Access, ISO 9660 File Access, and High Sierra
File Access are present in the Extensions folder in your System Folder on
your hard disk.
147 Troubleshooting