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m The disc may be damaged. Try another disc in the drive, and try the
original disc in another drive. If the original drive reads other discs or if
the original disc doesn’t work in another drive, the disc is probably
damaged. You’ll need to replace the disc.
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 before using the
disc.
m Don’t try to open the files in your System Folder. Most of the files in your
System Folder are used by your computer for internal purposes and are not
intended to be opened.
You can’t save changes you make to information on a CD-ROM disc.
m CD-ROM 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 filenames. Some application programs need these version
numbers in order to work with files. To make the version numbers
available to programs on your computer, follow these instructions:
Drag the CD icon to the Trash. When the tray opens, hold down the Option
key and push the tray back in, continuing to hold down the Option key
until the disc is fully in the drive. The program you are using should now
be able to locate filenames 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.
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Chapter 6