[4.0.0-beta2] [Raspberry Pi 3] Transfering ROM into External Storage

[marcosmo]

Hi, I've just upgraded to 4.0.0-beta2 and I'm trying to transfer all my roms to a external USB. When selecting the option in system settings the drive appears in Recalbox. I haven't been able to find instructions on how to addings roms on the external USB pendrive, do I need to create the usual Roms folders structure manually myself or should this be created automatically by Recalbox when selecting external? The usb pendrive is formatted as exFAT, hopefully that is not impiding Recalbox from creating the folder structure for my roms. Apologies in advance if I have missed any post on how to use the external storage on 4.0.0 Thanks for great work Marcos