Downloaded Linux mint 20.1 Cinnamon ISO
Tried to follow instructions for Integrity and Authenticity; Integrity passed but must have messed up my Authenticity file/folder location.

What I did was to open the "Home" folder in/on my desktop and created an ISO folder within it. Dragged ISO, Sha256sum.txt, and Sha256sum.txt.gpg into ISO folder. Noted the ISO went in fine but the other two txt files were linked to. Cut an pasted all terminal commands.

scup@GullHaven:~$ cd

scup@GullHaven:~$ cd ISO

scup@GullHaven:~/ISO$ sha256sum -b *.iso
14f73c93f75e873f4ac70b6cddc83703755c2421135a8fbbfd6ccfeed107e971 *linuxmint-20.1-cinnamon-64bit.iso

scup@GullHaven:~/ISO$ gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-key "27DE B156 44C6 B3CF 3BD7 D291 300F 846B A25B AE09"
gpg: key 300F846BA25BAE09: "Linux Mint ISO Signing Key <root@linuxmint.com>" not changed
gpg: Total number processed: 1
gpg: unchanged: 1

scup@GullHaven:~/ISO$ cd

scup@GullHaven:~$ cd ISO

scup@GullHaven:~/ISO$ gpg --verify sha256sum.txt.gpg sha256sum.txt
gpg: can't open 'sha256sum.txt.gpg': No such file or directory
gpg: verify signatures failed: No such file or directory
scup@GullHaven:~/ISO$ ^C
scup@GullHaven:~/ISO$ ^C
scup@GullHaven:~/ISO$ ^C
scup@GullHaven:~/ISO$

Help: I tried it several times and I must have messed up somewhere?

"gpg --verify sha256sum.txt.gpg sha256sum.txt"

I don't get this.

Your verifying the authenticity of sha256sum.txt file.

https://linuxmint-installation-guide...st/verify.html

You need the real file, not a link.

When I right click on either file the following window opens up:

Open link in new tab
Open link in new window
Open link in incognito window
Save link as...
Copy link address
Inspect

There is no "save as". I do not know how to copy either file into my ISO folder. I am using Chromium. The instructions I am following is from the Linux download web site.

The save link as option will save the data file.

You should be able to simply verify checksum of iso file. Look online and use a quick glance at the output of online sum and your result. Should be all you need.

That doesn't mean that your burned disc will turn out perfectly however.

The save link worked!

scup@GullHaven:~$ cd
scup@GullHaven:~$ cd ISO
scup@GullHaven:~/ISO$ gpg --verify sha256sum.txt.gpg sha256sum.txt
gpg: Signature made Wed 06 Jan 2021 11:10:08 AM EST
gpg: using RSA key 27DEB15644C6B3CF3BD7D291300F846BA25BAE09
gpg: Good signature from "Linux Mint ISO Signing Key <root@linuxmint.com>" [unknown]
gpg: WARNING: This key is not certified with a trusted signature!
gpg: There is no indication that the signature belongs to the owner.
Primary key fingerprint: 27DE B156 44C6 B3CF 3BD7 D291 300F 846B A25B AE09
scup@GullHaven:~/ISO$

Not really sure how I messed things up but did not get any "no file or directory". Most important is "it is a good signature from Linux Mint ISO Signing key. The Linux download site stated the "warning" is perfectly normal and to be expected. Jefro, I used a flash drive and "USB Image Writer" to create a bootable live Mint flash drive. That little piece of software made my life quite a bit easier.

Thank you, everyone, for staying with me until I got over this snag. Was up half the night trying to figure why I could not follow simple instructions. One last question:
How do you mark this thread "solved"??

Thanks for the update and solution.


Should be a button on this page says something like solve??