I smell a repeat of the SBAT problem

This is more a heads up than anything else, given my recollection of the spike we saw in users with SBAT issues due to dual booting or having formerly dual booted, but having orphaned Windows EFI stuff.

Tl;dr: Upcoming Windows 11 feature will, if Windows won't boot, boot into WinRE (recovery environment), connect to the Internet, and do what needs doing to render the machine bootable again. This is some ways off yet, and I don't see information about how much it'll do without asking permission (after the original plans for Microsoft Recall, I wouldn't be surprised if it just did as it pleased), but a worst case scenario could theoretically include silently wiping and replacing an EFI partition to ensure Windows boots.

I want to be very clear that I don't see this being done deliberately. Linux on the desktop isn't something any major corporation cares a whole lot about, but there are enough Windows devs who develop Windows software and backend systems in Linux that it'd be a nightmare for Microsoft to have those clients wrecked. Still, the SBAT situation was acknowledged as a bug from the get-go as well, and took months for them to fix, leaving users to find workarounds. Caveat emptor, dual booters.

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Thank you for the information provided. Can you please tell me what to look out for with Dualboot? I don't understand it very well. Does this mean that if you use windows recovery, Linux may not be able to boot afterwards because grub will be deleted? If so, can this be prevented when only one drive is in the computer?

Basically, yes. Please remember that I'm concerned based on problems in the recent past (search this forum for "SBAT" to read about the previous problems), but that doesn't mean the upcoming Windows feature WILL break dual boots, only that it may. If it determines that it needs to repair the partition where boot data is stored (/boot/efi/EFI), it could do so by deleting everything and only putting Windows' boot data in. If that happened, you would need to boot using a Zorin live environment USB and try the boot repair tool.

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