Hi. I am a long-time Windows user (all the way back to 3.11 including every iteration except 8 and 11) and decided to try Linux as Microsoft doesn't seem to have mastered the whole update thing. I read up on the subject, watched several videos and decided on KDE NEON. I need to keep Windows for some things but was very open to the idea of replacing it with Linux completely at some point. I downloaded the Neon iso, upcoupled my Windows drive and booted from the USB stick. The installation completed and I was advised to update the system. To complete this process I needed to reboot. When I did so so, I got the 'no bootable media' or 'no operating system found' or whatever it says. You know the one. I reconnected the Windows drive, went into the BIOS, selected the Linux drive, but no joy. I have found this is a problem that several people have encountered so I thought I would try the Newbie section of a Linux forum. Any help gratefully received. Thanks

Boot from the live usb, go here https://help.ubuntu.com/community/Boot-Info to provide more information.

Try booting in the same physical configuration as when you were installing:

• windows drive disconnected
• neon drive connected
• installation media connected

If you are lucky, you'll be able to boot into the installed system.

You can run the installed system in a maintenance mode by booting the installation media as if you were going to install. Once the desktop is reached, do the following:

1. Ctrl-Alt-F2 to reach a login shell prompt
2. login "neon" to reach a passwd prompt
3. <ENTER> to login (passwordless)
4. sudo passwd root
5. <provide a password>
6. <confirm password>
7. Alt-F3 to reach another login shell prompt
8. login as root with the password you just created
9. fdisk -l # from this output, identify the device names applicable to your root and ESP partitions, e.g. nvme0n1p1 for ESP, nvme0n1p3 for /. If fdisk output turns out to be inadequate to task, try parted -l or lsblk -f or tune2fs -l <suspect partition name> to confirm ID
10. mount /dev/nvme0n1p3 /mnt # mount neon's / filesystem
11. mount -o bind /dev /mnt/dev
12. mount -o bind /sys /mnt/sys
13. mount -o bind /proc /mnt/proc
14. chroot /mnt
15. mount -a

At this point you are running the installed system with full superuser authority, in position for whatever repair can be deemed necessary. First, check to see if grub was setup at all:If ls returned BOOT and ubuntu or neon, the ESP is likely setup correctly. What you want to see is something like:What you might be seeing omits ubuntu/neon if not windows. If there is neither ubuntu nor neon, then create a new entry based upon directory names found in ls output (probably ubuntu, less likely neon):The bolded strings above are based upon output from ls -Gg /boot/efi/EFI/ubuntu. Next try Alt-F7 or Alt-F1 or Alt-F2 to reach the initial Neon desktop, then reboot without installation media attached.

Thanks for the tips. I'll give it a try!

Any updates?

To a thread that's been closed for two years, where the solution was posted?? Probably not. If you have a question you should open your own thread with the appropriate details.