Guided by Use physical harddisk in Virtual Box, I allocated a physical partition on an external device (/dev/disk1s1 in my case, not that it should matter) to be used as a raw disk (i.e. a VMDK that points to a physical device instead of a virtual disk file) for a Windows 10 virtual machine to be installed on it. Attaching a Windows 10 ISO to the guest machine and booting it up, the installer complains with a rather vague error with an error code of 0xC0000225. No installation screen even shows up. Did I miss something?

Note: I do not expect the guest OS to treat the chosen raw disk (/dev/disk1s1) as a partition belonging to an encompasing disk. Rather, to the guest, I want it to be as if it were a whole disk, like what a "normal" VMDK virtual disk is supposed to be if I hadn't used a raw disk.

Note: I zeroed some of the disk's beginning using something like dd bs=4m count=256 if=/dev/zero of=/dev/disk1s1 to make it look a little cleaner.

Your Answer

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Browse other questions tagged or ask your own question.