I've got a similar problem - installed Zorin Core alongside Windows 8.1. I got the option to boot into Zorin or Windows on the first re-boot and never since - only Windows boots now. Disabled Fast Boot and Secure Boot. Also booted from USB and ran the Boot Repair w/o luck. It generated an error file…

Appreciate the responses so far - I have been surfing forums all day yesterday and today decided to try a few things, including some of the things Aravisian has posted here and elsewhere. Short recap: Aspire V15 Nitro laptop, 1TB drive, 16G DRAM, NVidia 840M w/2G VRAM I installed Zorin 16.2 Core u…

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Dual Boot only boots Windows

General Help

Ocka April 2, 2023, 4:03am 6

Glad you fixed it
Yes Disabling secure boot will cause SHIM errors.
Secure/fast boot explained