A one-time pad is a key generation scheme that can be basically used with any algorithm (even the basic Vigenère cipher would do the job to store the codes for TOP SECRET programs safely). This is mathematically proven.
However, such a key has to be really random and has to be as long as the thing you want to encrypt (so you need a Hard Drive full of key to encrypt a Hard Drive) and, most importantly only used once. All these measures are quite difficult to be taken, if you want to protect your key and are only practical for TOP SECRET government programs, the “red telephone” and such stuff.
So if you do not have something as dangerous as the next “Snowden files” or similar stuff on your PC (even he did not use one-time pads as they are impractical), just don’t use it.