Recently I have found a little harder to set up a dual boot installation Ubuntu 20.04 LTS / Windows 10 in a laptop. It involved:
- Switch SSD operation mode from RST to AHCI
- Prepare usb stick for Ubuntu iso image to load in UEFI mode (BIOS does not support legacy mode)
- Shrink Windows 10 partition
- Ubuntu 20.04 installation, create encrypted LVM partition
- Enjoy the set up