Unreadable data files

looking for help with my pioneer dvr-105. I can copy 1 data file on a re-writable disc and windows can open it. the same file written to a once only disc cannot be opened by windows. however, iso buster can open both discs and the only thing that differs is iso buster tells me about the unreadable disc is No file system scanning(reserved tracks) does anybody know what this means and how I can get the burner to adjust the burning procedure. anybody!!!1

Was your write-once disc finalized?

Yes It Was