Expert pls help.....Nero burned disc cannot be recognise

Hello

i have burned 4.35GB of vob files in a single folder, using Nero551056 UDF(1.02)/ISO format.
Disc cannot be read by my WinXP system on both Ldw811-hsop & Pioneer 116.

i have also burned a similar disc (vob files in 2 folders) using Nero6303, using ISO format ,also cannot be read.

what i did wrong ?

Which is the better format for burning data ?

Frustrated…

anyone know what is the “Do not add the ‘;1’ ISO file version extension” under the Relax ISO Restriction mean…

will it cause disc recognise issue ?

It might be the case of poor DVD discs/media. Try burn at lower speed possible. Try other brand of discs. Check at your dvd recorder web page for a list of supported/recommended media.