Hi,

Im wondering how you can tell if your DVD Drive Combo has the ability to write to Dual Layer Dvd's.  I have a Dell Inspiron 9400 with a NR319 ASSEMBLY, DVD+/-RW, 8X, HITACHI LG DATA STORAGE, SULLIVAN/TOBAGO

 

Dvd Drive.  I thought it was a dual layer when i purcahsed the laptop but there arent any marking indicating that it is and I didnt want to spend the money on the Media unless i could use it.  Any help would be appreciated!