Dual boot with Zorin on a separate disk together with Grub

Installing Zorin OS
1

Thank you @zenzen for the link to this tutorial on how to prepare the manual install of Zorin. But I am not completely satisfied with it.

I want grub and the complete efi stuff related to Zorin on the disk where it belongs. Not on the disk where Windows is running.

I have tried several ways without success. Can you help further? Or anyone else?

2

What did You tried in Detail? And could You show us with GParted how Your System is partitioned? You can install it with sudo apt install gparted

3

So, you want Zorin installed on another drive, not on another partition, did I understand you correctly?

4

I agree, it's still a bit unclear whether you want to have two separate drives (one with Windows and one with Zorin OS) or set up a dual boot on the same drive.

5

Actually I don't care about a dual boot. I want 2 separate drives so that I can install the HDD with Zorin in another desktop. This I did with KDE Neon and it works perfectly.

6

Install Win on one drive with the other HDD / SSD disconnected, then disconnect the Win disk, connect the other HDD / SSD you want to install Zorin to, boot, install, done - when you want to switch, change the boot order in BIOS.. or, you may be able to just choose your Win or Zorin disk in BIOS one-time boot selector (won't affect the primarily selected disk in BIOS for booting btw) with F12 -- may be different, that's what my Dell OptiPlex and my Asus ZenBook use (aptly named ZoriPlex and ZorinBook.. hehe).

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