

When I copy the contents of both ISOs to another flash drive I can successfully boot both of them on a UEFI bootable only PC. I have verified both ISOs are functioning using Virtualbox and both boot in EFI mode. Once you created the multiboot USB, boot your system with the USB drive, select the ISO you want to load and start using it in no time.
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Upon booting the ISO that was not made to be bootable, I get the error "No bootfile found for UEFI! Maybe the image does not support X64 UEFI!" Upon trying to boot the bootable ISO ImgBurn created using Ventoy, I get a flashing underscore in the top left of my display for a few seconds before it returns to the Ventoy boot menu. I have also tried making an ISO by leaving "Make Image Bootable" unchecked. Under Advanced > Bootable Disc, I have tried making a bootable image where I point the boot image at the file and changing the "Sectors to load" to 8. Open ImgBurn. Select "Create image file from files/folder" in ImgBurn, select the Windows 10 folder and the destination ISO directory.

Select the images files you want to back up on the USB drive and copy them. Extract with WinRAR to folder, add ei.cfg file under sources folder that allows me to select which edition to install. Open File Explorer and head to the directory where you keep your boot images. Download Windows 10 ISO officially from Microsoft's website. I then use ImgBurn's "Create Image File from Files/Folder" functionality to make this folder into an ISO. The Windows 10 ISO does not show what edition you'd like to install (Home, Pro, etc.) by default so I extracted the ISO using WinRAR to add an ei.cfg in the sources folder that overrides this. Hi there, I'm struggling to create an edited Windows 10 ISO that can boot with Ventoy.
