i have one hdd write protected can i copy its all files to other hdd and change its configuration without password
thanks for helping

Well, I dont understand the second part of your question (password?) but for the first part do this:

cp -R -f /dev/hdXX/ /path_to_copy_to

where hdXX is the hard drive from which you want to copy, and /path_to_copy_to is the path on the new hard drive onto which you want to copy the files. The -R -f makes the copy recursive, which means it'll copy everything in every directory, and the -f forces it to copy regardless of permissions or errors, and it won't ask you to confirm each and every file.

As I said, I don't get the other part of the quesiotn regarding the password, could you elaborate?

Good luck...

You copy from a mounted partition. There is no '/dev/hdxx' folder, that is the file for the device. You need to mount the device to access the files inside:
mkdir /mnt/write-protected-hd
mount /dev/hd[insert appropriate numbers/letters] /mnt/write-protected-hd
mkdir /mnt/destination
mount /dev/hd[insert ... for destination drive] /mnt/destination
cp -r /mnt/write-protected-drive/* /mnt/destination

If you don't have the password, you will need a bootdisk to do this.

dear the clearification of password
the hdd is containing squid cache and i forget the pasword its lan card is malfuntioning so iwant to change the lan card and confugrate it need root password which i forget it is long time so i want to extract the main to other hdd and configurate the lan so please again is it possible and what to do for
thanks for prev reply and thanks for next