How does Windows hibernation relate to other drives and systems?

Question

Windows

Let's say I have a machine with two different HDDs with their own SATA connectors on the motherboard, both running copies of Windows.
Can I hibernate both copies and switch between them?
If each system uses its own physically addressed disk and dumps the contents of the RAM only on it, then in theory they should not interfere with each other
. It will look like this:
1. The first system is working, the second in hibernation "sleeps on the disk
" system, put it into hibernation mode, wait for "sleep"
3. Distort the power, turn on the system and select the second system in the bootloader
4. Now the first system is on the disk, the second one works
Sounds simple, but won't it cause any conflicts and what is the best bootloader to use to make it work? (I'm leaning towards grub)

Answer 1

If the disk is mounted in the system before sleep, then its RAM contains a cached file system structure. If another operating system then works with the same disk, then the changes it makes to the file system will not match the data in the memory of the sleeping one, and after waking up from hibernation, the result is unpredictable. At a minimum, lost files, as a maximum - complete damage to the file system and BSOD.
As long as the volumes / disks of other systems are not used by the current system, it can be put to sleep and other axes can be used that do not touch the partitions of the already sleeping system.

Answer 2

if you reset the power and start the PC from the start of the BIOS and you have a choice of systems there, then you can start any system

Answer 3

When waking up, it won't even reach the bootloader, that's all.
But if the power drops in the process, then the system will recover from the RAM dump that lies on the disk, it's
easier to stupidly turn it off.

Answer 4

What a crazy idea. Why is it needed if virtual machines exist?