OS Boots on one device but fails to boot on another (mander.xyz)

submitted 1 week ago* (last edited 4 days ago) by TonyTonyChopper@mander.xyz to c/linux@lemmy.world

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Hi, I just did my first Linux install (Kubuntu) onto an external NVME drive. It boots fine on my laptop but gives me a "MBR error, insert floppy" screen when I try to run it on my desktop. On the motherboard settings the drive shows as a bootable option but without a UEFI label. What issues could cause this? From what I've read it seems like a boot loader problem but I have no idea why it would be fine on one device but not another. I tried to update the motherboard firmware but the file the manufacturer provides wasn't working. It's running a 2021 version.

Edit: I figured it out. The issue had nothing to do with my Linux installation. My motherboard had a hidden option to change the UEFI boot order, which is entirely separate from choosing which drive to boot from.

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[-] pleasejustdie@lemmy.world 2 points 1 week ago

I assume you installed Kubuntu to the external drive on your laptop, in which case it likely installed the boot record into the laptop's main drive

[-] TonyTonyChopper@mander.xyz 2 points 1 week ago

I ran the installer on the desktop with all other drives disconnected

this post was submitted on 05 Nov 2024

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