virtualbox
This is the error I received:
Failed to create the hard disk storage C:\Users\Sara\VirtualBox VMs\OSOS\OSOS.vhd.
Could not create the medium storage unit 'C:\Users\Sara\VirtualBox VMs\OSOS\OSOS.vhd'.
VHD: cannot set the file size for 'C:\Users\Sara\VirtualBox VMs\OSOS\OSOS.vhd' (VERR_DISK_FULL).
Result Code: VBOX_E_FILE_ERROR (0x80BB0004)
Component: Medium
Interface: IMedium {53f9cc0c-e0fd-40a5-a404-a7a5272082cd}
VirtualBox does support DMG files. As you can see in my screenshot, when browsing from the VirtualBox medium finder, Explorer lists DMG in the "supported file types" section.
The supported file-types section gets its' information from the Windows file associations that are set when you install a program. During the installation, the program will declare which file types it supports. In this case we can see the VirtualBox has declared support for DMG format.
Best Answer
The error code
VERR_DISK_FULLsums it up. Your disk is full. Free up some space and it should work.