Cant Read DVD-RW Disc

[ReSpEcT]

I recently added a new hard drive to my computer. So I copied all the files
I wanted to keep onto 2 CDRW and 1 DVD-RW discs. The CDRW's work
fine, but I cannot get my Pioneer A05 to show the files on the disc.
The properties show Empty Disc, but No space available. I tried on another PC and it showed up.

When I rebooted my computer with the new Hard Drive Have I done
something wrong, or missed something. It plays DVD films OK with
Power DVD Pro 6, I have just loaded XP office as well.

Can U help. I really cant afford to lose the info.

[Doggiedaddy]

More info????? What format did you copy the files to the media. Do you have the program used to do the B/U installed on the new H/D. Did you use a DLA, IMG, Data etc. and did you finalize the disc???????? So many questions!

[ReSpEcT]

I used Nero 6 DVD ROM ISO Multisession. The option to finalise was not
given. It was a succesful burn.

The new hard drive is a Maxtor 80 gb. I used the software supplied
Maxblast to install and format the drive as additional to my Samsung 40gb. The new drive is the slave.

I have not used the old drive yet, as I am still setting the new one up.

Can you help, I am a bit of an amature at this.

Thanks