Hi, Thanks for your reply. Usually, the blank DVD's would already be formatted and ready for use since they are write once only disks. Please try creating the back up disk without formatting the DVD. 
hi, i have problem with dell backup and recovery in my dell laptop (inspiron15). when i select factory backup option > select Discs then  continuous it says "Please insert supported blank media to continue".However blank disc is already inserted and formatted with live file system. please help if anyone have solution. Thanks
Problem with Dell backup and recovery system