Quote Originally Posted by Brother Oni View Post
Replacing an internal hard drive on a laptop can be very fiddly and generally involves disassembling your laptop (usually by unscrewing things or lifting up your keyboard), which can invalidate your warranty.
And even if it was nice and easy to swap out (some are) you then have to reinstall your operating system and all your programs, and then figure out a way to get all your other stuff from the old drive to the new one. You might as well just purchase an external drive and accept that you'll have to carry it around with you as well as the laptop--you can get ones that are specifically designed to be small and light to alleviate this issue, but they tend to be more expensive.