WinBootMgrHandle->GetInfo(winBootMgrHandle, &infoGuid, &infoSize, &fileInfo) RootDir->Open(rootDir, &winBootMgrHandle, path, EFI_FILE_MODE_READ, EFI_FILE_READ_ONLY) Įfi_guid_t infoGuid = EFI_FILE_INFO_GUID

Uint16_t path = u'EFI\Microsoft\Boot\bootmgfw.efi' Opening the root volumeĮfi_simple_file_system_protocol_t* fsProtocol = NULL Įfi_guid_t fsGuid = EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID īS->OpenProtocol(device, &fsGuid, (void**)&fsProtocol, IM, NULL, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL) įsProtocol->OpenVolume(fsProtocol, &rootDir) Įfi_file_handle_t* winBootMgrHandle = NULL I am able to start other EFI applications with the same code but bootmgfw.efi is the only one that doesn't start, though I am able to start it in the UEFI Shell just fine. I'm writing my own bootloader and I want to be able to boot Windows (and Linux).īootmgfw.efi is the windows bootloader and I'm trying to load and start it with UEFI functions LoadImage() and StartImage(), but after calling StartImage() on it, I get EFI_INVALID_PARAMETER error, even though I checked that the image handle is valid and LoadImage() didn't return an error status.

Windows boot manager