: It tells the system to "reserve" space on the hard drive so the download doesn't fail halfway through due to a "Disk Full" error.
This guide explains what these files are, how they function, and why they are essential for smooth software installation. What is an Install Size Text File? Download Ready Install Size txt
: The launcher queries your local drive (e.g., C:\ ) to see if available bytes > required bytes. : It tells the system to "reserve" space
: It distinguishes between the Download Size (the compressed data being transferred) and the Install Size (the final space occupied on the disk). How It Works in Modern Launchers how they function
: Repositories use similar metadata to inform users of the total "Disk Space Required" before confirming sudo apt install .