Said the other way round, you'd better first have a working ram booting Windows, and then attempt to create a ramdisk and booting from it via EFI shell. Uefitool add uefi shell to bios windows#I don't see why (in theory) #1 and #2 should not be possible from EFI shell, though I am failing to see any particular advantage on not using an already tested and working solution, but #3 is a pre-requisite to boot a Windows from ramdisk. Open P9X79.CAP with UEFITool CTRL+F to search click Text tab Look for IOH text in the bios double click on one of the messages this should point to the setup section. Uefitool add uefi shell to bios driver#If you prefer, besides the way you "prepare" the ramdisk, the OS you copy there must be capable of booting from ramdisk.Īnd to boot from UEFi (or BIOS) you need a OS loader, the only os loader that can load (recent) windows is bootmgr.efi (or BOOTMGR on BIOS), so what any of the existing working tools do, one way or the other, is to:ġ) prepare and/or map an image to and/or copy to the ramdisk the needed OS filesĢ) chainload the osloader on it (bootmgr.efi or BOOTMGR)ģ) the os on the ramdisk must have installed/available a driver to map the ramdisk as volume This is independent from the way you load the data to the ramdisk. Such a driver is needed for windows to "map" an extent of ram as a disk, otherwise it won't ever boot, simply because it cannot find the device, typically halting with a 0x0000007b BSOD. WIndows (recent versions) has not one built-in apart the one used for. The point is about the need of a ramdisk driver. No, this has nothing to do with the filesystem used by the ramdisk (though a filesystem on the ramdisk is needed to load files to it and of course the OS needs to be ale to access it). I was just wondering if anyone successfully used the UEFI-only ramdisk for booting Windows. It looks like they all use grub in some way. I guess a 'boot from that file option (UEFI SHELL)' could be added using easyBCD or GRUB. Uefitool add uefi shell to bios windows 7#Currently during boot windows boot manager gives me the option to boot windows 7 Premium home or (via TAB key) the HP diagnostic tool that is UEFI based but nothing else. This package also includes the pre-built binaries for IA32, 圆4 and IPF platforms. This release follows the UEFI Specification 2.3.1. These tools build in the EDK environment. The question is not about the existing tools. Now I would just need to get the notebook to find this file during the boot process. The EFI Disk Utilities contain the source codes and documentations required to develop UEFI related tools for the UEFI filesystem. But in case ntfs works would you need an additional driver? I guess the disk would just look like a normal ntfs disk to the OS, wouldn't it? The link just mentions fat32 so maybe it won't work with Windows+NTFS. But you can leave out the grub part (just use the efi shell) and I'm not sure if you would require an additional driver. AMI-specific features like NCBs, ROM_AREA structure and other things like that can't be implemented by me because of the NDA I have.I guess it is similar to what you can do with grub.If someone wants to write an unpacker for such crappy files - I will be glad to use it. Uefitool add uefi shell to bios update#
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