![]() Some care must be taken though if you want a USB drive that boots both traditional MBR/Bios and UEFI, as the UEFI requirements can be a bit picky. You can make such a drive using the various popular methods, and then just replace the files/layout with the same one used for this ISO. (Addition: This Multi-boot (圆4/32, Pro/Home) ISO method also works for a bootable USB drive. The archive doesn’t include oscdimg, so you’ll have to get that from the page linked above. That means you won’t have to download a dual-architecture ISO to get started. ![]() See here)īecause I don’t think Microsoft will mind, I zipped the base layout of the disk, it’s available here (19.4 MiB). Seeing as you don't often see UEFI x32 machines that doesn't seem to be much of an issue. Way 1: Download and Install Windows 10 21H2 64/32 Bit ISO File Step 1: Download Windows 10 21H2 ISO file Now you can directly download an Windows 10 ISO image from Microsoft. x32/86 Windows 10 will only install on an x32 machine, and 圆4 only an an 圆4 supporting CPU. (Edit-addition/correction: Various sources suggest that under UEFI, windows/setup kernel must match the underlying processor architecture, ie. ![]() The x86 version is, however, not bootable in UEFI mode. Otherwise, oscdimg will fail withīoth architectures installed successfully in both BIOS mode, the 圆4 version worked with UEFI, too. Important: The source (and possibly destination) directory must not reside on a volume that is ReFS-formatted and/or hosted on Storage Spaces. I then created an ISO image using the oscdimg tool ( available here): oscdimg -m -o -u2 –udfver102 -bootdata:2#p0,e,bG:\WinISO\boot\#pEF,e,bG:\WinISO\efi\microsoft\boot\efisys.bin G:\WinISO G:\Win10.iso In their place, I added the whole contents of the regular MSDN ISOs, which contain both editions. Then I simply removed the original x86 and 圆4 folders, because they contained only a single edition (going by size, anyway). It contains a regular Windows bootloader with entries for both x86 and 圆4 versions of the setup, residing in folders instead of the drive root. Well, I simply tried the brute force way: I let the tool create a dual-architecture ISO and examined it for a bit.
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