How To Downgrade Ubuntu 21.04 To 20.04

Okay, so you took the plunge. You bravely upgraded to Ubuntu 21.04, codenamed "Hirsute Hippo," because who wouldn't want a hippo on their desktop, even a hirsute one? But maybe, just maybe, the hippo isn't quite fitting in. Perhaps it’s chewing on your productivity, or maybe it developed a sudden craving for all your RAM. Fear not, intrepid adventurer! Going back to the familiar comfort of Ubuntu 20.04, the long-term support (LTS) release, codenamed "Focal Fossa," isn't as scary as facing a real hippo in the wild.
First things first: back up everything! Imagine your computer is a magnificent sandcastle you built on the beach. The tide (in this case, the downgrade) is coming in. You wouldn't want your precious memories (photos, documents, that half-finished novel about a sentient toaster) to get washed away, would you? So, back them up. Seriously. You'll thank yourself later. I'm not just saying that; a future, possibly sobbing, version of you will literally send me a mental thank-you note.
Now, let's talk about the downgrade dance. It's not as elegant as the tango, and there's definitely less glitter involved, but it's still a dance. A data-wrangling, system-resetting dance. The key is to create a bootable USB drive or DVD with the Focal Fossa (Ubuntu 20.04) image. Think of it as your time machine, ready to whisk you back to a simpler, fossa-filled world. You can find the image on the official Ubuntu website. It’s generally a pretty straightforward download, but if you find yourself wrestling with file extensions or burning processes, remember: YouTube is your friend. Seriously, someone, somewhere, has made a video about this. Probably several someones.
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Once you have your bootable media ready, it's time to restart your computer and boot from it. This is where things get a little… intimate with your BIOS/UEFI settings. Every computer is different, like snowflakes or annoying relatives. You might need to press the F2 key, the Delete key, or some other mysterious combination of keys to get into the boot menu. Consult your computer's manual or, again, YouTube. Think of it as a treasure hunt, but the treasure is the ability to make your computer do what you want.
Now, brace yourself. You’re about to reinstall Ubuntu. Choose the option to "Erase disk and install Ubuntu." Yes, I know, that sounds terrifying. It's like saying goodbye to a cherished pet rock. But remember that magnificent sandcastle you backed up? It's safe and sound. This clean slate is what allows Focal Fossa to move in and take over.

During the installation process, you'll be asked a bunch of questions: your location, your preferred language, your username, and password. Answer them honestly. Unless you're trying to create a super-secret online alias, in which case, go wild. Just don't forget your password. Trust me, forgetting your password is a universal human experience, right up there with stubbing your toe and accidentally replying all to an email.
Once the installation is complete, you'll be greeted by the familiar face of Ubuntu 20.04. It’s like coming home after a long trip. Everything is where you left it, well, almost. Now, comes the slightly less fun part: restoring your backed-up data. This might take a while, depending on how much stuff you had. It's a good opportunity to make a cup of tea, listen to some music, or contemplate the existential nature of software updates.

Finally, once everything is restored, take a deep breath and pat yourself on the back. You've successfully downgraded Ubuntu! You've faced the hirsute hippo and emerged victorious. You've wrestled with boot menus and file systems. You've conquered the downgrade dance! And you've probably learned a thing or two about your computer in the process. Now, go forth and enjoy the stable, dependable embrace of Focal Fossa. And maybe, just maybe, think twice before adopting another hirsute hippo. Or don’t. The adventure is yours!
Important Considerations
It’s worth noting that this process will, effectively, wipe your current system. So, backing up data is not just a suggestion; it's a commandment chiseled in digital stone. Remember that. And also, always double-check that you're downloading the correct Ubuntu version (20.04) from a reputable source. Nobody wants a surprise virus party.
"Downgrading operating systems: it's not for the faint of heart, but definitely achievable with a little patience and a lot of backups."
