You can’t save changes you make to information on a CD-ROM disc.
mA 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.
Your CD-ROM disc is vibrating in the CD-ROM drive.
mSome CD-ROM disc labels have artwork that is noticeably thicker on one side than the other and can cause the disc’s weight to be slightly off-center. This uneven distribution of weight coupled with the high rotation speed of your CD-ROM drive can cause some discs to wobble in the drive and make your computer vibrate. The vibration damages neither the CD-ROM disc nor the computer and affects very few CD-ROM discs. If you can feel or hear that the CD-ROM disc is vibrating in the computer, you don’t need to do anything special; continue to use the CD-ROM disc as you normally would.
Note: If you use a CD-ROM disc with a removable (sticky) label, remove the label before inserting the disc.
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.
mDiscs in the ISO 9660 and High Sierra 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 programs on your computer, follow these instructions:
Drag the CD-ROM disc icon to the Trash. When the tray opens, hold down the Option key and push the tray back in. Continue to hold down the Option key until the disc is mounted in the drive. The program you are using should now be able to locate file names on that CD-ROM disc.
mMake sure that Foreign File Access, ISO 9660 File Access, and High Sierra File Access are present in the Extensions folder in the System Folder on your hard disk.
