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Is it possible to add some 'PXE Network Boot' option to GRUB?

For recent versiones of iPXE efi chainloading is possible. In the ipxe.iso is an image (esp.imp) which contains the needed efi structure. You can copy the BOOTX64.EFI file to a different place in your ...
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Is REISUB/REISUO to switch off/reboot safe?

Physically there's no harm. In terms of data safety - you may find some files (specially databases) corrupted or empty on next boot.
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Write a bootable image of system into an internal disk, without removing a data partition

Use fdisk to delete volumes sdb1 to sdb3 Still in fdisk, create a new volume sdb1, covering the whole free 100 GB Now you only want to copy sda1 of your image to sdb1, so do fdisk ubuntu.img and print ...
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grub not working with lvm

as @psusi pointed out, the issue was that my lvm binaries were corrupt. I ran apt-cache depends lvm2 | grep Depends | awk '{print $2}' | xargs apt install --reinstall -y apt install --reinstall -y ...
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GRUB: Display GRUB on external display connected to laptop?

Lenovo Y50-70 is a dual-GPU laptop. It has a power-efficient Intel iGPU and a more powerful discrete Nvidia GPU. With Nvidia, this is known as the "Nvidia Optimus" technology. There are ...
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Mirroring EFI System Partition (ESP) on Ubuntu

It does seem to work with grub-efi-amd64-signed but confusingly, to get the prompt to identify efi partitions you have to call dpkg-reconfigure shim-signed.
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I messed up systemd-boot by being foolish. No longer able to boot into PopOS or windows 10

Feels like it's not much of an answer as it doesn't fix the problem directly but for completion here's how it's now all sorted. Firstly, I did a fresh install of Pop_OS. That removed the grub problems ...
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grub: What is a menu item identifier?

What is a menu item identifier? I seem to have stumbled onto the right answer to the question above. Given the Grub menu (as described in /boot/grub/grub.cfg) shown below, the menu item identifier ...
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