I CAN'T BOOT HD IMAGE

[Starman99x]

I installed MS-DOS 6.22 on an hd created with Dosbox-x, it boots normally there, but no matter what I tried I can't get it booting with Dosbox-core :

Here's the conf file I'm using (it works with Dosbox-x):

[autoexec]
IMGMOUNT C "D:\RETRO\ROMS\DOS\os_files\Microsoft MS-DOS 6.22 (HD)\MS-DOS_6.img" -t hdd -fs fat -size 512,63,16,31
BOOT C:

I also tried a floppy installation and that one boots fine with Dosbox-core.