this post was submitted on 13 Dec 2025
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I had a friend who wasn't very technical who had some issue where he couldn't boot into his OS (Windows) and bought a new computer, but wanted the files off the old computer. So he asked me for help. I remember bringing a Knoppix live CD (remember Knoppix?) And when I was there, I realized I had a severe lack of general networking equipment. (I didn't have a switch, so I couldn't plug both computers into the network so they could communicate with each other and the internet.)
So I started up the old computer in Knoppix, plugged it into the network, and installed a bunch of networking packages like a DHCP server and such. And then I used the Ethernet cable to plug the two computers into each other, letting the Knoppix box give the new Windows machine its IP. And then I installed Putty on the Windows machine and used it to SCP the files from the old machine to the new one.
The whole thing went way smoother than I'd have expected, never having attempted that before. But I felt like such a hacker that day. Lol.
I remember going through tech school 20 years ago and them telling you you need a crossover cable with you at all times for just this type of situation. I think in the 20 years I have used one once.
NICS have had auto crossover detection built-in for like 20 years now too.
Apple used to have a function in macs with FireWire, where if you had T pressed down on the keyboard while booting, the computer booted into a mode where you could use it as a FireWire external hard drive. An insanely useful feature, for migrating files off old machines, installing OS onto a machine without a functional optical drive, quickly stealing your friend's hard drive contents etc.
It's a shame it didn't really take off as a more common feature. It would be a useful feature in so many situations, nowadays the closest I can get to it is a custom USB stick with a linux distro that tries to discover all volumes and expose them as network drives, but it's a lot more complicated to use than just having something you plug in and it simply works. I'd love it if they did a similar thing with thunderbolt, but as far as I know it's no longer an option.
I think they still do that with Thunderbolt.