I used to think that default default allocation unit size was 4 kB (4096 B).
I have a recent drive that was formatted with 64 kB allocation unit size, I would currently like to reformat it with the smallest unit size.
In current menu in Win 10 Pro, the smallest option I select is 8 kB (so 8192 B), and if I select the "Default " size it also results in 8 kB.
Is it something that changed in OS? Is it something that depends on the drive? (It's a 26 TB drive by the way, file system is NTFS.)
Also, why can I selected smaller unit sizes?
Please stay focused: I want to know if default size changes, what does the unit size choice that is offered depend on (OS? Drive?), why I can't select smaller. I'm not interested in yet another debate on the pros and cons of various sizes.