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Perhaps this old link better explains deleting the original user which I understand OP wants

https://www.digitalocean.com/community/tutorials/how-to-add-and-delete-users-on-ubuntu-18-04

Not really .. it was just another rabbit I tried to pull out of a hat .. as often I do with wild ideas. i know that my security key works with Heroku (tried it yesterday) but it could be any other...

That might be rewritten .. [/COLOR] How do you give a raw user sudo rights?

This could be a good test case for mentoring a new user in the arts.

Start by running this command in terminal to...

I do not know how to change existing default grub theme. But I do know that if you install rEFInd (which supplements GRUB and sits alongside in EFI) you can customise rEFInd GUI theme quite easily.

The alternatives for 2FA are remote server EITHER sending an SMS one time password (OTP) OR requiring security key to be touched. You might try opening a test account with both options. Heroku is an...

I remember a Setting .. Settings > Appearance > Dock > Autohide the Dock

Solved .. ok. I see you did that.

Often OP's write and omit important context clues.
I admit I have zero knowledge of Japanese. But that doesn't dampen my curiosity.
We now learn "I'm using Lubuntu, not Ubuntu".
Now thinking out...

Apology for the "translation" red herring (but not for citing Professor's work in Japan on antconc).

Sometimes I tend to "shoot from the hip" with ideas.

Studying expanded context, perhaps this...

I am not a language expert. But I offer two ideas.
(1) there are translation services such as DeepL.com
(2) Join a discussion group managed by Professor Laurence Anthony (based in Japan)
who...

Find an alternative.

http://snapsvg.io/
BoxySVG
Inkscape
etc.

After your experiments I suggest that you still experiment with Recoll+EasyTag to more easily index and find your collection(s).

Extending the EasyTag idea from TheFu (I just installed EasyTag through Synaptic) this is another option for opening *.mp3 files indexed through Recoll. After indexing all desktop files (although...

Another find ...

https://www.reddit.com/r/firefox/comments/untrya/u2f_keys_not_working_in_ubuntu_2204_remove_the/

Run ..
man synaptic

for reassurance.

Good news. Follow the advice penned frequently by TheFu to backup (n times, locations).

Any progress with PhotoRec?
Setting aside the flood of references given earlier, another idea is for you to approach a local university in your country experienced in data forensics, talk to a...

Based on recommendations from other users I adopted Recoll as my main desktop indexing engine. So in your case (after full lengthy indexing process) run in Recoll GUI Query Language - ext:zip
This...

The finger should point to the manufacturer, not Ubuntu, in my opinion. The question is does the manufacturer support Ubuntu?

I have problems in Ubuntu 22.04 working with Logitech Bluetooth mouse (with side buttons) and keys. They did work in an earlier version but not today. They work in Windows. One day I'll find out...

Although this writer has zero experience with RAID devices the broad model developing in mind (avoiding third party forensic data recovery specialists) is to create a mentor/mentee framework.

...

i should add a footnote. Since you will be using LiveUSB to be your "home forensic lab" by installing tools such s TestDisk/PhotoRec, ddrescue, R-Linux, and so on .. it should have reasonable size...

It seems that we are in the last chance saloon.

The first "local shop" is taking too long to assess. I would have asked up front for (a) references and (b) an estimate.

I think that you will...

I concur. If you can find a 64bit laptop/tower PC, with at least 16GB (depending on work profile) you are good to go.
If the gameplan is to add external drives/docking bay ensure that you have...

Well I'm in U.K. and a long term Dell user.

Dell+Ubuntu is a partnership.

Perhaps start with preconfigured Ubuntu OS.
...