Not even if Windows and Linux were on different partitions on the same disk would Windows be able to access the files on the Linux partition without the key.

Just pointing out that s separate disks doesn’t change anything. The data, in its encrypted form, will be inaccessible without the decryption key.

I replied to a statement about Heif being an Apple image format. It is not.

Furthermore, HEIF is something that most major mobile device vendors support. Some, like Samsung, even sets it as default on some of their devices. So the whole “Apple always supporting not open standards” is just tiresome at this point.

99.999% of all Android users are defacto locked in by Google. Yes, Android might be open but Play services are not. Google works hard to lock in Android users.

At least Apple are open and honest about locking in iOS users.

No.

It’s a container for image data developed by Moving Picture Experts Group (“MPEG”, try to guess what else they have created).

While there are some compatibility issues between vendors HEIC still offers a greater set of features as compared to fx JFIF (you probably know it as JPEG/JPG.

Apple was one of the early adopters (2017) and (as usual?) the industry has followed. Microsoft wants money for the codec in Windows and that’s probably one of the reasons why it’s not commonly used…yet.