Hi all, this is my first post on this awsome looking forum ... I have recently aquired a macbook air from my little sister and want to reload SL BUT i have no dvd drive...so i have been messing around with the usb install but am having problems . I have been using an Iomega 500 gb external drive , after i format it on the macbook (journled) and try to "restore" it fails to recognize my image. It is an install disc image (.dmg) ....could it be because when i put the image on the macbook desktop i used the iomega formated to NTFS (just to transfer)...maybe it didn't see all of the file ??? I can not figure this out, doesn't help that i'm a comlete mac newbie either . I tried to use fat 32 but the .dmg wouldn't fit onto the drive in that format.