While cutting and pasing important file folders from Toshiba notebook with Windows XP and Sonic DLA to DVD RW something went wrong and program got closed resulting in malfunctioning of Sonic DLA. Now the relevant DVD can not be opened and data retrieved. When trying to open the DVD RW the drive does not read the DVD i.e. does not recognize the whether DVD RW or CD RW and gives error messae that Y: is not accessible and incorrect function. Attempted to retrieve data by disabling Nero softwae but without any result. Agreed that data should have been copied to DVD RW instead of cutting and pasting But how to retrieve lost data now? Can anyone help.