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Wikipedia redirects "Windows Boot Manager" to the Windows Vista Startup Process. To avoid a problem dual booting Windows 10 with Linux, I would want to note the UEFI and GPT configuration from a live Linux flash drive. I'm not sure what the Windows equivalent to GRUB 2 would be, but I would want to save those settings as well as the partition table.
How do I get that diagnostic data before proceeding with any Linux install steps?
1The only thing of interest are the UEFI boot entries. If you’re concerned about the rest, create an image of the disk. – Daniel B – 2016-12-12T11:44:38.750