Hirens Boot USB is a bootable USB containing various diagnostic programs such as partitioning agents, system performance benchmarks, disk cloning and imaging tools, data recovery tools, MBR tools, BIOS tools, and many others for fixing various computer problems.

It is a Bootable USB; thus, it can be useful even if the primary operating system cannot be booted. Hirens Boot USB has an extensive list of software. Utilities with similar functionality on the USB are grouped together and seem redundant; however, they present choices through UI differences.