Zorin Os does not boot

I have C:\ D:\ and E:
on E:\ I have installed Zorin Os 15,
restart, but only windows 10 is starting (no bootmenu)
and on windows E:\ is no longer available

Did you set up uefi boot menu in Zorin? Also make sure to disable fast boot in BIOS and secure mode in Windows.

You can also try grub repair