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From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: comp.os.linux.advocacy,alt.comp.os.windows-10
Subject: Re: Cult of Unix
Date: Fri, 17 Jan 2025 00:08:22 -0000 (UTC)
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On Thu, 16 Jan 2025 22:48:10 +0100, Carlos E.R. wrote:

> On 2025-01-16 22:37, Lawrence D'Oliveiro wrote:
>
>> File-copying software like rsync is quite sufficient for doing
>> “bare-metal restores” on Linux.
> 
> Not for restoring grub.

After the bulk file copy (with rsync or other tool), you need to fix up 
two things:

1) /etc/fstab with the new volume UUIDs
2) reinstall grub

That’s it. I have successfully migrated bootable systems many times using 
this procedure.