But I’m a little concerned that things such as the power supply, motherboard etc. may break at some point as they are 3 years old already. Should I worry about this or not?
power supply sometimes die, but they can affect your other components, too. I lost a HD due to a faulty power supply, I think. The power supply died about 2 weeks before the HD.
Never had a broken motherboard, though I guess it can happen.
What OS are you running now? Your pc should be able to upgrade to XP, but you might find that it runs a little slowly at times. i still use 98 on one system, but upgraded the hardware. Usually flies by.
If you make the new disk your c: drive, you will need to set up the OS again. I guess you know that. They will show up on other drives if you copy the files to that drive. On the other drive, they can be deleted without effect, usually. Please remember your system needs to run on the C:/ drive, so you either need to reinstall on the new hard drive from scratch or you need to copy the system partition to the new drive. Or better still pay someone else to do it!
??? what if I want to upgrade the OS to a newer version of Windows? Will that create problems for the hardware?
Depends on the hardware.
If I use a USB key drive, can I use that as a “rescue disk” if things go wrong? (Not that I’d know how to use one anyway; the only reason I ask is that AVG Antivirus seems to want me to make one.)
Unless your system can boot from a USB, this is motherboard feature, I think, I don’t think it’s possible, though it’s a good idea… comments?
In AVG you can skip this step easily. I have done.