Re #28
I have both problems using the 20200522.0.0 image on a Windows host.
Host specs: Lenovo Thinkpad P50, Intel Core i7-6700HQ, Windows 10 v1909, tried with both VirtualBox 6.0.4 and 6.1.8.
Full details at https://askubuntu.com/questions/1243582/unable-to-boot-official-vagrant-boxes-for-20-04
Re #28
I have both problems using the 20200522.0.0 image on a Windows host.
Host specs: Lenovo Thinkpad P50, Intel Core i7-6700HQ, Windows 10 v1909, tried with both VirtualBox 6.0.4 and 6.1.8.
Full details at https:/ /askubuntu. com/questions/ 1243582/ unable- to-boot- official- vagrant- boxes-for- 20-04