Burned copy of Vista recovery won't boot

[Cheryl_27]

Got a Toshiba recovery disk w/ Vista, which will boot my Satellite P200-ST6061. This isn't a Vista installation disk, but a recovery disk (image).

Burned a copy of the bootable disk, verified the burn w/ Nero.

The burned copy won't boot the laptop. Is there a common reason(s) why it wouldn't? Remember, this isn't a MS Vista installation disk.

Before burning, copied the files to my HDD and modified one line in the Install.ini file. The Readme file from Toshiba says if the value for "CustomSystemInstallation=1," then "creating & installing a custom install is supported," using the recovery disk. The orig line was "CustomSystemInstallation=0".

Doubt changing that one value in the Install.ini file causes it not to boot from burned copy - could be wrong.

I didn't choose the option to "finalize" the disk (or make single session) before burning. Could that be it?

Any ideas? Thanks.