You can use gBurner to make a bootable disc.
Click on the "Data > Data Disc" icon in the project list
Or Click on the "File > New > Data Disc" menu.
A Data Disc project opens in the project window.

If you want to open an existing data project / image
file, click on the
icon and navigate to the data project / image file you would like to open.
Select a recorder from the drive drop-down lists, and then insert a recordable disc into your selected recorder.
If your disc already contains data and you want to add
more data, you can load them by clicking on the
icon.
Add files and folders: Click on the
icon to add files and folders. You can also directly drag files and folders from Windows Explorer to the project window.
Create new folder: Click on the
icon to create a new folder.
Delete files and folders: Select the files and folders you want to delete, then click on the
icon.
Rename file or folder: Click the file or folder you want to rename, click it again (not double click), then type the new name.
Change label: Click the disc label, click it again (not double click), then type the new label.
Click on the "Action > Boot > Add Boot Information" menu to add boot information to disc.
If necessary, Click on the
icon to set disc properties.
If you want to save the current project, Click on the
icon.
Click on the
icon, the burn dialog opens, where you can select or check the required burn
options and then click on the "Burn" button to
start the actual burn process.
If you want to create a multisession disc which allows you to add more data in future, please
uncheck the "Finalize Disc" option.