") and modify device UUIDS & vmlinuz/initrd names. For safety, you leave module insertions ("insmod. You can start with copying existing entries from currently used /boot/grub/grub.cfg to newly created /etc/grub.d/. If you do the same on nvme install, and just change the default boot entry in /etc/default/grub, it should work. # to boot nvme install from usb stick grub: Only when I install it on a USB stick it causes problems. Also, the system on a USB stick is mainly for offline backups and I really don't want to mount it in my main system.Ĭuriously, I can boot Debian Live CD on a USB stick without problems. if I forget to mount the USB device, "update-grub" will remove the entry for the unavailable device. I know that I can "update-grub" when both drives are mounted, so "grub-install" will also create entries for systems on other drives (when properly configured with GRUB_DISABLE_OS_PROBER) but ideally I would like to have completely independent systems on both drives. On the other hand when invoke "update-grub" in my NVME system, it will take over the boot process and I will not be able to boot directly from USB stick at all when I select it from the UEFI device list or any other way. The problem is that when I install the system on a USB stick it "takes over" the computer's boot process and only the system from the USB stick will normally boot - when I try to start the system from NVME (by selecting it from UEFI boot list) it shows me GRUB command line, which works but is inconvenient to use. Hi, I have a Debian testing installation on my main NVME drive but I want to also have a separate installation on a USB stick.
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