dvd刻录的

我用dvd刻录机刻录影音文件文件时，总是提示我：'You are about to create a multisession write once DVD disc. Session no.2 and above will not be readable with some DVD-ROM drives and operating systems prior to Windows XP. How do you want to continue?'
三个选项：Quote:Burn Multisession Anyway；Burn Without Multisession；cancel.
我已经知道用第一项刻录后续文件夹无法访问，但是现在的问题是：我可不可以选第二项？还有，是否我应该采用什么格式呢？ISO?UDF?UDF/ISO?