after update to 16.1, external usb hdd isnt recognized

hi,
since updated from 16 to 16.1, my external hdd isnt recognized at boot anymore (hdd powered and spinning)
tested some other hdd and usb-sticks, all have the same problem
when the nas is up and running and i plug in my hdd, all works fine
reboot --> no external usb hdd available
plug hdd out and in, all works fine
nwsp2-lite, only one user and only two samba-shares (int hdd - ext hdd)
firmware 16 was running flawless, never had such problems
any hinds?
thanks
since updated from 16 to 16.1, my external hdd isnt recognized at boot anymore (hdd powered and spinning)
tested some other hdd and usb-sticks, all have the same problem
when the nas is up and running and i plug in my hdd, all works fine
reboot --> no external usb hdd available
plug hdd out and in, all works fine
nwsp2-lite, only one user and only two samba-shares (int hdd - ext hdd)
firmware 16 was running flawless, never had such problems
any hinds?
thanks