Mac OS X reserves an amount of hard disk space when burning a CD. The amount of space reserved depends on the size of the CD. If a disc burning operation is unexpectedly interrupted, this space may be temporarily unavailable. The system is not otherwise adversely affected. Interruption could occur, for example, if the computer loses power, is force restarted, or an external CD burner is disconnected during use.
For Mac OS 10.2 or later
To make the temporary space available again, restart the computer. It is not necessary to use Disk Utility or fsck.
For Mac OS X 10.0 to 10.1.5
To make the temporary space available, either use Disk Utility to repair the disk or burn another CD successfully.
Steps for using Disk Utility:
Insert your Mac OS X CD-ROM disc, then restart the computer while holding the C key.
1. Once started up from CD, choose Disk Utility from the Installer menu.
Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from CD to access Disk Utility.
2. Click the First Aid tab.
3. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
4. Select your Mac OS X volume.
5. Click Repair. Disk Utility checks the disk.
Once complete, quit Disk Utility and restart from your Mac OS X volume.
Advanced: Using fsck
If your Mac OS X CD or your CD drive is not available, use fsck twice instead of Disk Utility.
Use fsck two times. See technical document 106214: "
Mac OS X: Why, When, and How to Run fsck for File System Maintenance".