Does a Linux USB stick (no live system) leave any traces on the used PC?

I'm a hobby programmer and have recently had a lot of arguments with my father, because I install a lot of programs, etc. Which he doesn't like (unfortunately we only have 1 family laptop). Now we have agreed that I install Linux on a USB 3.0 stick, then boot from it and then I can do what I want. Under the condition that nothing (except possibly the boot order) is changed on the laptop. Now where I was looking for instructions on how to properly install Linux on a USB stick, read something with Boot Manager, GRUB, etc. I'm now just ned sure whether everything will be installed on the USB stick or whether it will be installed on boot is installed on the laptop and changes something on the system that must not happen under any circumstances.

Can I install Linux on a USB (correct, no live system), then boot on a Windows laptop and then remove it again without leaving any traces on the laptop (except boot sequence) / things are installed on the normal hard drive? (Please answer with justification and only if you know 100%)

Unless you use the hard drive for programs, you have to save everything on the stick

Of course everything is saved on the stick, otherwise my question wouldn't make much sense.

No, he would hardly change anything on the PC. You just have to want it. There's nothing about Windows in the subject areas. Correct?
So far there's only one Linux system on it anyway.
Have you thought about simply installing a 2nd Linux on the hard drive?
I even have 4 systems (different distributions) on the "large PC" and 2 on the laptop. You hardly need more than 20GByte (11 are used).
So everyone has their own system. You can destroy the other as root, but who does it willfully.
The installation on a USB stick is quite possible, but it can lead to it being simply removed… The device files are also not unique if several sticks are inserted. But it can be solved.

Nope is Windows on it, is also somewhere in the question. Simply installing it with Linux was also my first idea, but my father doesn't want that because he is afraid that something will be damaged in the Windows installation. But to be honest it also has advantages for me that when I go to a friend I have my own operating system with me, so to speak, where everything is on it and I ned always have to copy everything I need onto a stick.

It actually works very well. For work on external computers, I have set up a 128 GB stick with persistent Debian testing.

https://wiki.ubuntuusers.de/MultiSystem/

No, unless you mount the hard drive on the Linux system and use it.

Yes, my plan was also a 128 GB stick.

Do I have to be careful that it does not mount iwie automatically or could I theoretically only mount it manually?

Both are possible if you want to. Automatic only works if the drive is entered in / etc / fstab, no entry in fstab, no automatic mounting. The sudo user can do manual mounting.

Ok but so that it happens automatically I would have to specify what I won't do, I was more concerned with whether I had to be careful with the 1st boat or something that I didn't tick anything wrong

Then, so to speak, have my own operating system with me where everything is on it

but then the stick must always be selected via the BIOS for booting.
You can't take dug from the "home PC" with you. If there's grub on the USB stick, then your father has to call up his Windows via the BIOS.
It all just creates trouble.

If I always take the stick out after using it, it should boot normally from the hard drive, right? Without having to change anything in the BIOS

No it generally doesn't cause any traces but if you are fast enough and the RAM freezes you could get some data out of it, so if you really want to be Really sure use Tails.

Um jaguut but why should you freeze the RAM to get to data. It's all about whether nothing is adjusted on the family laptop

Aso yes then you can actually be sure that nothing happens, you would still be careful with drivers because they can also change other hardware such as the graphics card.

I agree. Normally, you can also press a key when booting and you get a boot menu where you can select the stick. If you don't call that, it just boots Windows.