I updated my MacBook Pro to Big Sur. 15.1
Now I am not able to run Oracle Virtual Box becasue of the error that VT-x is disabled.
Can someone help me to enable VT-X?
Is this an Apple-silicon M1 MacBook Pro?
if so, the Intel vt-x instructions are NOT part of the Rosetta emulation, by design.
By default it should be enabled, suggest you to try NVRAM reset if it is intel-based MacBook Pro.
See: Reset NVRAM or PRAM on your Mac - Apple Support.
Hope it helps.
The Apple-Silicon M1 processor uses a completely different machine Instruction set from previous Intel processors.
Apple says every well-behaved ordinary Application (that does not use Virtualization) will run on Apple-Silicon. It will use Rosetta emulation to translate the Intel binary to M1-binary. (But VT-x instructions are NOT part of that emulation, so Hypervisors like Virtual Box will not run their Intel versions.)
Many vendors of Hypervisors, such as parallels, are making great progress toward shipping their new software based on the M1. Some are in Beta test, others have yet to be made available in any form. The bigger problem is that you may also need M1 versions of certain emulated software to run under the Hypervisor. Windows for M1, for example is only available under a developer program, not to the general public.
Your other Intel-processor Apps will run and not crash while being executed on a a completely different processor than the one the developer used. That is what Apple promised and delivered.
How to enbale VT-X on my MacBook Pro.
