The information I got under windows 10 from the view settings are the following and let think that the bootloader and system partitions are on separate disks, but actually I can start my windows 10 system even if I disconnect the other disk (supposed to correspond to the F disk) :
There is one entry in the Windows bootloader.
Default: Windows 10
Timeout: 30 seconds
EasyBCD Boot Device: F:\
Entry #1
Name: Windows 10
BCD ID: {current}
Drive: C:\
Bootloader Path: \WINDOWS\system32\winload.exe
There is one entry in the Windows bootloader.
Default: Windows 10
Timeout: 30 seconds
EasyBCD Boot Device: F:\
Entry #1
Name: Windows 10
BCD ID: {current}
Drive: C:\
Bootloader Path: \WINDOWS\system32\winload.exe