A: The base install uses about 12-15 GB of disk space (vs 20+ GB for 22H2) and ~1.2 GB RAM idle (vs ~1.8 GB). But the difference is negligible on modern hardware.

Microsoft does not provide consumer 1507 ISOs officially anymore, except through:

🚫 Avoid random ISO sites. Many contain malware, modified files, or unwanted toolbars. Always verify SHA-1 checksums against known Microsoft-published values if you find an archive copy.

Instead of using 1507, consider:

If you absolutely must test an old build, use a virtual machine (Hyper-V, VirtualBox, VMware) with no network access.