- May 16, 2010
- Gigabyte Z370-HD3
- RX 580
- Mobile Phone
Thank you @miliuco for this hint. Problem was caused by "old" HfsPlus.efi driver located in Drivers folder together with OpenHfsPlus.efi. I replaced it by OpenHfsPlus.efi and system is booting correctly now.
EDIT - new workng HfsPlus.efi driver for OC 0.6.6 can be also downloaded from this location : https://github.com/acidanthera/OcBinaryData/blob/master/Drivers/HfsPlus.efi
Note that this driver is from Feb 29, 2020, so not new with 0.6.6