Backing up your files onto your computer’s internal hard disk isn’t so smart. You’re always better off using an external drive – and tools can help you manage this. — dpa Your hard drive gives up the ghost, your files are hijacked by ransomware or there’s a fire at home. None of these scenarios seem particularly immediate – and yet you still have to be prepared for them. Backing up data regularly is quite a nuisance, but you can make your life a little easier with special backup programs – and you don’t even have to pay for them.