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Process for commissioning a new hard-disk-drive with Ubuntu

es flag

I have a Lenovo idea-centre pc The old HDD packed-in. I bought a new HDD - Seagate Barracuda 4TB I installed the new HDD today, loaded Ubuntu 22.04 via a live-usb and then rebooted BUT, Ubuntu would not boot - received the message "no operating system found". I have tried many workarounds - to no avail. It would appear that there is no boot-loader - ? Grub-2 Can anyone guide me to a solution - I am not very tech-savvy but can use the terminal and carry out monkey-see-monkey-do instructions. Thank-you for your time Duncan

Organic Marble avatar
us flag
Did you install in UEFI or legacy mode? If you don't wish to troubleshoot, but just fix it, consider using boot-repair https://help.ubuntu.com/community/Boot-Repair
Duncan avatar
es flag
Thanks - tried Boot-Repair - did not help
Organic Marble avatar
us flag
It's likely your install failed then. Did you get any errors? How about the UEFI vs legacy mode question?
Duncan avatar
es flag
Here is the reference to the scan Boot-Repair did of my system - it (Boot-Repair) said I should pass this on to any expert who was trying to help me:
Duncan avatar
es flag
Here is the reference: https://paste.ubuntu.com/p/bhF83Rx3v5/
Duncan avatar
es flag
I tried both UEFI and Legacy boots (by changing the options in BIOS)
mook765 avatar
cn flag
There is no bootloader installed at all. Your ESP is formatted with ext4 but must be fat filesystem. I'd suggest ot delete both partitions on the drive and do a clean install ( in UEFI-mode), let the installer create the needed partitions.
Duncan avatar
es flag
Many thanks for your help and time - I really appreciate it. I have tried that - sadly does not work - back to square 1.
Organic Marble avatar
us flag
Since your reply to all suggestions has been "I already tried that", it would save a lot of wasted time if you put what you already tried in the question.
Duncan avatar
es flag
Thank you. I have tried many, many "solutions" offered by searching the web. I did not write them down as I tried them - it would take pages and pages of text and even then I would miss out some. A recurring theme of the problems is "No EFI" system" Then, when I load and efi-system GParted does not allow me to add a mounting point for the boot. It goes on and on - always, at the end of trying something, "no mount point" or "no EFI system" - If I manage to get both these on then I can't get a mount point for the ext4 Linux partition. Most frustrating - have not slept in days.
Duncan avatar
es flag
I am taking my machine into the repair shop. Hopefully they will be able to solve the problem.
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