Turning a Dead Laptop Into My Personal NAS

July 07, 2026

So I had this old laptop just lying around, doing absolutely nothing. It had a 1TB hard drive sitting inside it, which felt like a waste, so I figured — why not turn this thing into a personal NAS at home. Something I could maybe upgrade into actual cloud storage later on if it worked out.

Here's how it actually went.

Wiping It and Starting Fresh

First thing I did was wipe the entire laptop clean. Didn't want any leftover junk from whatever it was being used for before. Clean install, nothing else on it.

Went with Ubuntu Server on top. No desktop environment, no GUI, none of that — just the bare server OS, since that's really all a NAS needs to run.

Getting CasaOS On It

Once Ubuntu Server was up, I installed CasaOS with:

That was it, one line, and suddenly I had a proper web interface for managing the thing — files, apps, all of it — instead of doing everything through SSH like some caveman.

Then Came the Actual Problem — My Wifi

This is where things got annoying, honestly.

I'm on Airtel, and their router is basically useless if you want to configure anything on it yourself. It's controlled through their app, and there's barely any settings exposed. I couldn't even assign a static IP to a device on it — it just does its own thing and doesn't care what you want.

And for a NAS, that's a real problem, because you need it to have a fixed address on the network so other devices can actually find it reliably.

Bringing In an Old TP-Link Router to Fix It

Luckily I had another router lying around from an old ISP — a TP-Link one. And unlike the Airtel router, this one actually lets you get into the settings and configure things properly.

So instead of fighting the Airtel router, I just connected the TP-Link one behind it. Airtel router stayed as the main connection to the internet, and the TP-Link one created its own little network behind that — kind of like my own separate network hanging off the main one. Not entirely sure what the "official" term for that setup is, but it worked. I could finally assign a proper IP to the laptop on this network, and once that was done, I could access the NAS from other devices without any issues, with CasaOS giving me that clean web interface to work with.

What's Next

Eventually I want to get this reachable from outside my home network too, not just over local wifi — basically turn it into my own little cloud storage setup. Still figuring that part out.

If you've got an old laptop sitting around doing nothing, it's probably a better NAS than you'd think.