DVD+Checking for error

[ShinigamiRukia]

Okays so...
A friend of my mother's gave us 3 DVD's that have movies burnt on them. She tried to make a copy of one of the DVD's but got a read error. So is there any way I can check, scan or something these DVD's for errors, before actually burning them? Or why the lady got an error on the one she tried to burn?
@_@

[Ledgem]

If these are burnt DVDs, I'm going to assume that there's no copy protection; normally that could be a cause for concern, however.

I'd recommend trying to use the discs in a different DVD drive, preferably from a different manufacturer. I've occasionally burnt DVDs with my laptop's drive that could not be read by my desktop's drive; the laptop could read them fine, however. It's possible that this is such an issue.

If many drives are unable to read, then it's possible that the disk is corrupt in some way. As far as I know, there's no automated way to scan for errors (except for during the burning process). It's pretty much a matter of if it works, it works, and if it doesn't, it doesn't.

[demonix]

If your using nero as your burning software then you should have a programme in the tools section (this would show at least in the start menu) called Nero CD-DVD speed where you can scan a disc for errors and check the quality of the disc (just be sure when you use the scandisc option you select the C1/C2 - PI/PO test as this will scan for actual errors on the disc)