On the same page is good, yes. If it helps, I can go through everything I’ve done just to give history:
I downloaded Core from Zorin’s downloads page on zorinos.com and went to BalenaEtcher based on the Basic Install instructions. BalenaEtcher has an FAQ that mentions Persistence and refers users to unetbootin instead.
Unetbootin was a pain, refusing to see my USB drive. They have an FAQ that says to use the command line if that happens, but that certainly isn’t helpful to non-coders like me. I need the steps. It took a long time to get enough help out of my brother to be able to get the command line to make unetbootin come up with my USB drive, but it did work. The “burn” took a long time (pretty sure it was more than a couple hours), but it finished successfully.
When I couldn’t get it to boot, I had my brother try it to see if it had even created a bootable drive, and he said it booted into Zorin just fine. I tried changing boot order, I tried enabling power to the USB ports during sleep, I tried different ports - and finally I found the UEFI issue. Changing to UEFI made the USB boot up Zorin just fine, but then Windows wouldn’t boot. Until this point, I’d never heard of UEFI, and it certainly didn’t show up in the settings in unetbootin.
Pretty much all the results I find in search are focused the opposite direction, telling people how to switch to UEFI. I did find one link that claims it’s possible to convert Win7(64) to UEFI without wiping the drive, but his instructions make no sense to me. I’m not sure if he put in negatives where he didn’t mean to have them, but I never did find the directions to fix Win7(64) in spite of his headline: https://chrunos.com/convert-legacy-to-uefi/
The link I posted previously about resetting his BIOS links back to https://nmilosev.svbtle.com/booting-uefi-usb-stick-on-a-toshiba-laptop-insydeh20-bios which dismisses CSM and implies that the only thing that makes a USB drive UEFI is having an EFI folder. Opening the bootable USB in Windows File Explorer shows that there is an EFI folder, though I doubt it’s as easy as deleting the EFI folder to make it switch to CSM.
Sorry I’m slow, but I wanted to offer complete information.