"Opened Disk Read Only - You Do Not Have Permission To Write"

On my laptop (a presario 2190US). I keep running into the above error, I've tried mounting/un-mouting hda1 and I've set all the permission to allow everyone to read and write on this disk but no matter what I cannot get it to install to my HD because of this. I figured it might be due to the fact that my HD was formatted in NTSF so I made a 6 GIG partition with ex2 and another 5 GIG with FAT32 but neither soluation worked, could this be a bug in the CD itself? I'm kinda frustraited becuase I've been running knoppix from the CD and have my settings on a thumbdrive but its getting kinda cramped and a bit of extra speed plus my CD drive back would be a great help. Thanks in Advance.