The installers are used (and run) under the standard Windows operating System and the Ventoy prepared folder is used only by Ventoy (and me when I'm populating/depopulating the ISO groups. On that newly built 500gB HDD mentioned above, I have a complete Ventoy folder tree of the ISOs I use plus a folder full of standard software installers I use from time to time. Just remember, exFAT doesn't support a lot of the file properties supported under NTFS, but probably none that you really need or are interested in. That'll at least let you use a lot of a large partition space for other file storage. Ventoy only shows the Ventoy folder and any Ventoy named path to any ISO that exists in the tree. I've played with Ventoy named folders at a depth of at least five and put ISOs everywhere.

So, if you'd like, you can have a fully normal exFAT partition and a special, properly named Ventoy folder (Ventoy works fine ) on that partition that follows the Ventoy naming rules and create any ISO tree structure you'd like for your ISOs at any depth in the tree. Ventoy itself won't see any of that stuff if it's named wrong or there's no ISO at any depth in the tree. You can put anything you'd like on the main Ventoy partition and it will work just fine under any Windows System that understands exFAT formatting (all modern Systems do, I believe). It won't show anything else in the Ventoy lists it produces. In FOLDER TREE MODE (F3) it will follow properly named folders to get to an ISO that may be buried down a bit in the folder tree. Ventoy won't show anything that's not properly named. Ventoy, for its purposes, will only follow properly named folders and files (according to its specs) when doing its ISO searching and listing. if you're willing to use exFAT formatting for the balance of the partition which is what Ventoy prepares for its ISOs. A Ventoy prepared USB storage element mounts just fine within the System. I don't believe Ventoy can currently prepare a non-USB storage element for use.

Super Winpe 2004 Iso