changing dvd drive permissions

You can't change the write permissions of the drive. The write capability is determined by two things:

1. The hardware itself -- IOW, a drive with no burn capabilities for DVD's can't burn to that media because it physically lacks a laser that will do that.

2. The type of media & its state. For instance, commercial DVD's are pressed, not burned, & their media layer can't be changed by shining a laser on it, period. DVD-R's can be written to once & only once. DVD-RW's can be erased & reused, but it is an all or nothing process.

What type of DVD have you put into the drive?

Is this a commercial video DVD, or a disk that you (or someone) burned?

Commercial video DVDs are copy protected, so it's not possible to just drag files off of them (it's not an issue with your drive). You must have had some other software that enabled you to get the files off, and since breaking the copy protection is illegal in the US, we're not allowed to discuss any possible procedures here. Sorry, but you'll have to take this issue up on some other web site.

Regards.

DVD's marked "RW" can be erased, but as noted this is an all or nothing process. This is not what you want to do anyway. What you want is to "rip" the movie to a format suitable for the PSP; thus, there is no need to write anything to the DVD.

Since the legality of ripping commercial content to other media is a complicated issue, this is not an appropriate forum to discuss if you have a right to do that, or to tell you how it can be done.