I mean fail as error. Like, I did something wrong at commands. I haven’t verificated the iso about its valid or not. That’s the thing I’m worried about. I asked can I verify with other ways without the iso. But I decided to do clean re-install. Thanks for comment. Goodbye.

Better guarantee it haha. I did nothing except using unnecessary documents and surfing on the net. And maybe some games. I used archinstall for it but now, I will set it up customized and nonscript. Maybe fresh restart would be better. Thanks for the help again. Goodbye!

So sorry for labor. There is a lacking information by me. I created the bootable at my previous OS, so there is no same .iso file. Only extracted version on my USB and installed version that is running on my PC. Can I see the mirror source from the extracted version?

Oh, I didn’t know that. I just downloaded iso and iso.sig then used gpg commands. The thing I’m worried about is, maliciousy chance of the iso. I probably used German or French mirror to download the iso. Then, failed the verification. I am using unverificated iso’s Arch Linux now. Can I know if I had any tracker, keylogger or mining software etc. ? Usage is normal and smooth as how it have to be. But idk… Just worried. I still have the same bootable USB that the iso was extracted into. I have a FreeDOS unnecessary PC. Can I verificate the bootable by executing any verification command while I’m at the installation process? Or, can I verify or check my operating system’s originality at post-installation era of my main PC? Thanks for comment.

I did download and set the bootable at my previous OS, Fedora. Now the iso is not reachable and I forgot the mirror that I downloaded from. I still have the usb card I used for installation. Can I do any verification over it? Thanks for reply and relaxing info.

As far as i see from the comments, I understood what i have to. I see that Arch has no problem in itself, the problem is user. I decided to install Arch on my pc finally. Thanks for your reply. Have a nice day.