I’m trying to install Qubes on my Thinkbook 14 g8 IAL.
The media test shows an error and won’t proceed to the installation screen. Even if I skip the media test and proceed with the installation, an error occurs midway and it fails to install properly. I used GNOME Disk Tool to burn the ISO.
Can someone help me?
Hi @N00b5926
Please follow the documentation at Installation guide — Qubes OS Documentation.
sudo dd if=Qubes-RX-x86_64.iso of=/dev/sdY status=progress bs=1M conv=fsync
Maybe the Gnome Disk Tool is not the right tool for creating the installation media. The fact, that the media test won’t be successful, is another point in the right direction.
Additional question: Do you’ve test the downloaded iso file as recommended at Verifying signatures — Qubes OS Documentation?
An corrupted iso file can be the reason for such errors also.
Also make sure if you have a big enough USB pendrive.
I have found out that the 4.3 .iso can’t really fit on my 8GB pendrive. Thanks to the ‘fake’ units used by the marketing teams! 
When I used the dd command to write an ISO file to a USB drive and booted from that USB, it didn’t proceed to the installation screen and stopped at GRUB.
Does this mean it failed?
Hmm, not sure, what you mean with “stopped at GRUB”.
The QUBES installation media boots via GRUB also, on the screen you have then the options to proceed with installation and verify the media or to proceed without verify.
If you mean your default GRUB screen (from your existing OS), then yes, it fails to boot from your installation media.
Sometimes, GRUB is a little bit picky, so maybe try to use another USB-Stick (if you have one more).
And very important, use as target for the dd command the whole stick, not any partition on it (for example /dev/sda, not /dev/sda1).
That’s the recommended tool to install Tails OS, so why not?
You can re-verify the USB stick:
Stopping at GRUB means it doesn’t proceed to the installation screen.
I verified the ISO file, of course.