I didn't check out knoppix but I'll tell you now that if your old hard drive crashed because of a virus and didn't just flat out fail, any program that recovers 100% of your files without choice (such as slave and master lets you do) could revive that same virus on your new hard drive..so be careful with how you approach retrieving your data unless you're sure without a doubt that your hard drive just failed due to old age.

__________________
██â€-█████████▒▓▓▓▓▓▓▓██████▓▓▓▓██████████████████ ██↑
██‡████████▒▓▓█████▓▓██████▓▓▓█████████████▓▓▓██ ██|
██‡███████▒▓▓██████▓▓▓███████▓▓███████████▓▓█▓▓█ ██|
██‡███████████████▓▓▓▒███▌████▓▓█████████▓▓███▓▓ ██|
██‡█████████████▓▓▓▒████▌▌▌████▓▓███████▓▓████▓█ ██|
██‡███████████▓▓▓▒█████▌▌▌▌▌▄███▓▓█████▓▓███████ ██|
██‡█████████▓▓▓▒█████████████████▓▓███▓▓████████ ██|
██‡███████▓▓▓▓▒███████████████████▓▓█▓▓█████████ ██|
██‡███████▓▓▓▓▓▓▓▓▓▓▓▓▌████████████▓▓▓██████████ ██|