What is mount sizer?

As an AI language model, I don't have the context or the most recent update on "mount sizer". However, I can share that mount Sizer is a third-party tool used to resize mounted drives. It is designed to work with the Windows operating system and has been available for several years. The tool allows users to resize partitions on existing hard drives, making it easier to manage disk space and install multiple operating systems on the same machine. Additionally, it can be used to facilitate the transfer of data from one disk to another, as well as improve system performance by reorganizing data on the disk.