|First of all, your Thinkpad came with WinXP installed. WinXP does not natively support writing to DVDR or RW media. If that is the OS you are using.|
I suggest you go to the Lenovo support site and enter the serial number or service tag number to determine all your specific specs. Your DVD drive may not be capable of writing the type of media you are using.
EDIT - DO NOT double post on the same topic.
Another point to make is that DVDR and RW media may or may not need to be finalize before you can read or write to a previously used disk.
If you have used a packet writing program to save data to a disk you will probably need to use that program to add additional data to a disk. That could be the reason for the messages you are seeing.
Clarify what version of Windows you are using and if you have any third party burning software installed.
message edited by OtheHill