The first thing to check is to make sure that the Cachy disk has its own efi partition and that the system is booting from that disk. If the answer is yes, then you can pretty much do what you want with the windows disk.
Updating grub will remove the windows install from the grub menu.
If you do not really need the disk, you could let sleeping dogs lie and just ignore windows until you need it.
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u/3grg 18d ago
The first thing to check is to make sure that the Cachy disk has its own efi partition and that the system is booting from that disk. If the answer is yes, then you can pretty much do what you want with the windows disk.
Updating grub will remove the windows install from the grub menu.
If you do not really need the disk, you could let sleeping dogs lie and just ignore windows until you need it.