To identify which boot volume is currently active on a BIG-IP system, the correct command is:

tmsh show sys software status

This command displays:

All installed boot volumes (HD1.1, HD1.2, HD1.3, etc.)

The BIG-IP software version installed on each volume

The Active field, indicating which volume the system is currently booted from

The installation status (“complete”, “in-progress”, “allowed”)

This is the standard and authoritative way to determine the active boot location.

Why the other options are incorrect:

A. tmsh show sys version

Displays OS version, build, and date.

Does not show boot locations or which volume is active.

C. tmsh list sys software update

Shows software update configurations, not boot volume status.

Does not display which volume is active.