ubuntu iso sha256 checksum

rf22 Published at Dev

rf22

I've been having some troubles with my newly installed Ubuntu system (random freezing) and I wanted to verify that the iso I received was not corrupted by checking the sha256 hashes (I know I should have done that first). I followed the instruction on the Ubuntu website but I keep getting the same warning, shown below:

user@user-System-Product-Name:~/Downloads/ubuntu_isos$ sha256sum -c SHA256SUMS
sha256sum: ubuntu-16.04-desktop-amd64.iso: No such file or directory
ubuntu-16.04-desktop-amd64.iso: FAILED open or read
sha256sum: ubuntu-16.04-desktop-i386.iso: No such file or directory
ubuntu-16.04-desktop-i386.iso: FAILED open or read
sha256sum: ubuntu-16.04-server-amd64.img: No such file or directory
ubuntu-16.04-server-amd64.img: FAILED open or read
sha256sum: ubuntu-16.04-server-amd64.iso: No such file or directory
ubuntu-16.04-server-amd64.iso: FAILED open or read
sha256sum: ubuntu-16.04-server-i386.img: No such file or directory
ubuntu-16.04-server-i386.img: FAILED open or read
sha256sum: ubuntu-16.04-server-i386.iso: No such file or directory
ubuntu-16.04-server-i386.iso: FAILED open or read
ubuntu-16.04.1-desktop-amd64.iso: OK
sha256sum: ubuntu-16.04.1-desktop-i386.iso: No such file or directory
ubuntu-16.04.1-desktop-i386.iso: FAILED open or read
sha256sum: ubuntu-16.04.1-server-amd64.img: No such file or directory
ubuntu-16.04.1-server-amd64.img: FAILED open or read
sha256sum: ubuntu-16.04.1-server-amd64.iso: No such file or directory
ubuntu-16.04.1-server-amd64.iso: FAILED open or read
sha256sum: ubuntu-16.04.1-server-i386.img: No such file or directory
ubuntu-16.04.1-server-i386.img: FAILED open or read
sha256sum: ubuntu-16.04.1-server-i386.iso: No such file or directory
ubuntu-16.04.1-server-i386.iso: FAILED open or read
sha256sum: WARNING: 11 listed files could not be read

To let you know what I've done, I downloaded the Ubuntu desktop iso and the SHA256SUMS/SHA256SUMS.gpg files from http://releases.ubuntu.com/xenial/ into the same directory. I then ran the command sha256sum -c SHA256SUMS from this directory to get the output. I have downloaded 5 different images and they all give this same exact output, that does not seem correct to me. I did exactly as instructed on the Ubuntu website, but I must be doing something wrong, right?

Stephen Kitt

The important line here is this one:

ubuntu-16.04.1-desktop-amd64.iso: OK

Your ISO is OK.

The checksum file contains sums for all the images; sha256sum warns you about the ones you haven't downloaded, because it can't verify them.

Collected from the Internet

Please contact [email protected] to delete if infringement.

edited at2021-03-27

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ubuntu iso sha256 checksum

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