Just burned DVD appears empty?

I burned video DVD using Nero Burning ROM in Windows XP.
Media MAXELL DVD+R; speed 8X;
Nero confirmed burn disc succefuly.
After re-ejecting DVD, Windows cannot see anything on disc…
I tried data DVD. Same problem!
Is there anyone who can help with this?

You probably have burnt the “ImageFiles” rather actual files. Or the burnt disc was not finalized or has been burnt in multisession.