iDVD 2: Burning a DVD-R Using a PowerBook G4 With Built-In SuperDrive
On a PowerBook G4 (1 GHz/867 MHz) with built-in SuperDrive, iDVD 2 will not ask you to insert a blank DVD-R if you click the Burn button only once. Click the burn button a second time before inserting a blank DVD-R disc.
Symptom
When you click Burn in iDVD and insert a blank DVD-R disc, the disc is opened by the Finder instead of iDVD.
Solution
Click the Burn button twice. iDVD will then ask you to insert a blank DVD-R disc.