Because Microsoft originally sold these editions separately. If you had a Professional key but a Home Premium DVD, you couldn’t upgrade without wiping the drive. An AIO ISO solves this: you burn one USB stick, boot it, and choose which edition to install based on the license key you own.
Bootable List 1. Hiren Boot 15.2 2. Win XP SP 3 3 ... - Scribd win 7 aio
Microsoft officially stopped updating Windows 7 in January 2020. Installing a stock RTM (Release to Manufacturing) disc from 2009 requires downloading hundreds of updates over 48 hours. Reputable Win 7 AIO builds have been "slipstreamed"—meaning the and all subsequent security patches are baked directly into the install.wim file. You install the OS, and it is already updated to 2023/2024 standards. Because Microsoft originally sold these editions separately
Windows 7 reached in January 2020 . Extended Security Updates (ESU) ended in January 2023 (except paid Azure-only variants). Bootable List 1
Out of the box, Windows 7 does not support: