Some isos now have install.esd instead of wim - presumably for space saving / booting problems on some machines from isos bigger than approx 4.7GB. Here is an example of menu.lst in Grub4Dos which resolves the issue (assuming the OS is installed on the first partition of the first disk):
The temporary workaround is to use another bootloader (Grub4Dos, Grub2, Syslinux) to chainload Windows 11. Running the following command from Win 11 installation media will install MBR code but the OS still won't boot: A quick look at the hex dump in the Linux terminal shows that there is no MBR code written to the disk: 2.9 at the link above).Īt this point the OS won't boot, at least on my system. 2.1 here:Ĥ) Install the BCD (Boot Configuration Data) using bcdboot command ( p. I use GParted, but any other modern partitioning utility should be ok.Ģ) Extract install.wim file from the ISO (it is located in \sources directory) and save it on a flash drive or on one of the logical partitions created in p.1) above.ģ) Boot to Win 11 installation media and run the dism command, following the instructions starting from p. Here is step-by-step summary.ġ) Partition the drive with a third party tool. However, there is one issue which remains unresolved: MBR installed by Windows seems to be defective and a third party bootloader must be used to chainload the OS (see p.6 below for details). Initially I tried to tweak the BIOS settings and then run the standard installation, but it always ended up in some "incompatibility" error. The machine is new and supports both UEFI and Legacy boot, but I like to have each version of Windows installed on a single partition and also like the simplicity of the Legacy mode. The installation was performed from the command line using install.wim file and dism command. I have successfully installed Windows 11 (v21996.1) on the new hardware with MBR partition table. Boot from PCI-E/PCI Expansion Devices - Legacy onlyĥ00 GB M.2 NVMe SSD - 3 primary + 3 logical NTFS partitionsĥ00 GB SATA3 HD - disabled from BIOS (3 primary + 2 logical NTFS partitions)
Boot from Storage Devices - Legacy only Boot Device Control - Legacy OPROM only Secure Boot - disabled (OS Type = Other OS) If /mbr is skipped only Partition Boot Sector will get updated. Replace drive letter G: as needed (it is the OS partition). Parameter /s might not be required on some systems (especially when installing the first instance of Windows) but it won't do any harm to use it all the time.Ħ) Update Master Boot Record and Partition Boot Sector
G:\Windows\System32\bcdboot G:\Windows /s G: Active flag (*) will be shown in the left column.ĥ) Install the BCD (Boot Configuration Data) using bcdboot command ( p.
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