Symptom
A disk that is available in Mac OS X is not available when the computer is started up from Mac OS 9.
Solution
Is the disk UFS-formatted?
UFS-formatted volumes are not available in Mac OS 9. If this is the case, may wish to erase the disk and use a different format (such as Mac OS Extended), as described in section II below.
I. Try Drive Setup first
Depending on the history of the affected disk (Note 1), using Drive Setup to update drivers may resolve the situation. Try these steps first:
Notes:
II. Using Disk Utility
Warning: These solutions involve formatting the disk. Formatting a disk removes all data contained on the disk. You should first back up important data and documents.
Disk Utility can install Mac OS 9 disk drivers when partitioning or easing your disk. Choose the method (A or B) that you prefer. Partitioning divides your disk so that it virtually behaves as two or more disks. A partition may be erased or reformatted without affecting other partitions contained on the same physical disk. If you do not need that, choose to simply erase the disk.
A. Erasing the disk
Note: You must choose the entire disk (Figure 1), not just a volume contained on it. If you are formatting only a partition of your startup disk, you cannot install Mac OS 9 drivers.
Figure 1 Disk Utility
B. Partitioning the disk
Alternatively, you may also avoid this issue by using the Partition function. If you only want the hard disk to be one volume, select one partition.
Related information
A disk that is available in Mac OS X is not available when the computer is started up from Mac OS 9.
Solution
Is the disk UFS-formatted?
UFS-formatted volumes are not available in Mac OS 9. If this is the case, may wish to erase the disk and use a different format (such as Mac OS Extended), as described in section II below.
I. Try Drive Setup first
Depending on the history of the affected disk (Note 1), using Drive Setup to update drivers may resolve the situation. Try these steps first:
- 1. Start up the computer from a Mac OS 9 CD (Note 2).
2. Open Drive Setup, which is normally located at in the Utilities folder in the "Applications (Mac OS 9)" folder.
3. Select the disk that you wish to make available.
4. Choose Update Driver from the Functions menu (Note 3). This message appears:
"The new driver will not be available until you restart the computer."
5. Restart the computer.
Notes:
- 1. If the disk was last formatted with Drive Setup (included with Mac OS 9), a third-party disk utility, or the Partition function of Disk Utility (included with Mac OS X), then you may be able to use Drive Setup to update the drivers. If the disk was last formatted using the Erase function of Disk Utility, then you need to continue to Section II, below. Disk Utility in Mac OS X versions 10.0 to 10.0.4 included the Partition but not the Erase function, so you should be able to use Drive Setup on a disk that was last formatted for or by Mac OS X 10.0 to 10.0.4.
2. This requires a "bootable" Mac OS 9 CD, one from which your computer may start up. Some Mac OS 9 Restore CDs included with recent computers are not bootable.
3. If the Update Driver menu selection is dimmed, you cannot use Drive Setup to update the Mac OS 9 drivers on this disk. You should continue to Section II.
II. Using Disk Utility
Warning: These solutions involve formatting the disk. Formatting a disk removes all data contained on the disk. You should first back up important data and documents.
Disk Utility can install Mac OS 9 disk drivers when partitioning or easing your disk. Choose the method (A or B) that you prefer. Partitioning divides your disk so that it virtually behaves as two or more disks. A partition may be erased or reformatted without affecting other partitions contained on the same physical disk. If you do not need that, choose to simply erase the disk.
A. Erasing the disk
- 1. Start up the computer from a Mac OS X Installation CD. When the first screen of the Installer appears, be sure not to click anything. If you do, you must restart the computer again.
2. Choose Disk Utility from the Installer application menu.
3. Select the disk in the left-hand column (see Note).
4. Click the Erase tab.
5. Select the "Install Mac OS 9 Drivers" checkbox.
6. Click Erase.
Note: You must choose the entire disk (Figure 1), not just a volume contained on it. If you are formatting only a partition of your startup disk, you cannot install Mac OS 9 drivers.
Figure 1 Disk Utility
B. Partitioning the disk
Alternatively, you may also avoid this issue by using the Partition function. If you only want the hard disk to be one volume, select one partition.
- 1. In Disk Utility, click the Partition tab.
2. Select the disk, not a volume of the disk. The message "Select a single disk in order to set it up" appears until a single disk is selected.
3. Set up partitions as desired.
4. Verify that the "Install Mac OS 9 Disk Drivers" option is selected (in the Options box).
5. Click "OK".
Related information
| Related Documents | ||
| 61301 | Mac OS X: How to Partition a Hard Disk | |
| 75275 | Mac OS X: About the "Install Mac OS 9 Drivers" Option in Disk Utility | |