Do I understand this correctly.
Using Imgburn 2.5.6.0
To Burn xdg3 backups, set write settings option by clicking radio button Calulate Optimal.
To burn ap25 backups, set write settings by clicking radio button User Specified and set the layer break to 1913760.
Using Imgburn 2.5.6.0
To Burn xdg3 backups, set write settings option by clicking radio button Calulate Optimal.
To burn ap25 backups, set write settings by clicking radio button User Specified and set the layer break to 1913760.