Grub4dos boot file code#

So far I have being able to UEFI boot Win10XPE_ењ†4.ISO from internal HD or USB, this is my very simple menu.lst (good to start testing with the minimum features):

It booted very fine, not a single issue, so this confirms a VHD with 2 partitions (having boot files/folders on FAT-32 partition) is capable to Ramboot very fine (at least when MBR booting). Title 10ењ†4-UEFI.vhd - SVBus RAMDISK - 2.3 GB - map as (hd) for MBR bootДЇind -set-root -ignore-floppies /10ењ†4-UEFI.vhd I created a fixed size 2.3 GB VHD (unformated) on a partition of my internal HD, initialized it as MBR, then formated as Win 6.x MBR, first partition is 128 MB FAT-32 0C Active, and second is NTFS (the rest of the espace), by means of wimlib-clc I installed (on Compact LZX mode) the Mini-10-ењ†4 on NTFS partition and created manually the Boot Files/folders on the FAT-32 partition, and edited both BCDs with BootIce, See attached pictures), latter made a new Ramboot entry on old menu.lst (for grub4dos for MBR) as usuall for the VHD located on internal HD:

My testing results with the grub4dos-0.4.6a_for_UEFI-: Title Start Linux Porteus 5.0 x86_64 openboxД¬hangeLog_UEFI-Eng.txt Sample-menu-Eng.lst Edited Novemby alacran

Title starts the existing hard disk (hd0) Title Start virtual hard disk (loaded into memory) Title Start virtual CD (loaded into memory) #Load font (if it is not a 16*16 font, add parameters, such as -font-high=24) Splashimage /efi/grub/splashimage.jpg || splashimage /boot/grub/splashimage.bmp #Set graphics mode (you can use graphicsmode to detect graphics modes supported by the system) #Set the character color (the upper 32 bits are the background color, and the lower 32 bits are the foreground color)Д¬olor normal=0xff9933 highlight=0xffff00 helptext=0xff00ff heading=0ењ†6ff00 # The font should be in unifont.hex format. # It must be UTF-8 encoding to support multiple languages. Currently, PXE Netstart only supports tftp.ДЄnd this is a sample menu.lst translated to English with Google Translate for your convenience, also attached: Cancel the delete disk function, such as map (hd1) (hd1).Д¦. In the UEFI environment, you can boot from a disk other than 0x80, so there is no need to swap disk operations, such as map (hd0) (hd1).ДҐ. Cancel the -hook, -unhook, -rehook, -unmap=, -floppies=, -harddrives= commands.Д¤. There is no need to execute the -hook command.ДЈ. Mount after the map function is executed. You can view the graphics modes supported by the system through the graphicsmode command.Дў.

Grub4dos boot file code#

For the mapping, refer to the source code of wintoflash.ДЈ. Modified console keyboard input and output, console screen output, memory control,Дrive control, get date and time, pause control, graphics mode and Unicode font implementation, PXE net start, etc.Дuring the development process, the GRUB2 source code was referenced. This is a huge project, almost all the code has been stroked. The script set can be written in multiple lines. The curly brace must be the end of a line.Дў. Reading general memory value is still вЂread memory addressвЂ™, while reading GRUB4DOS internal value, use вЂread *memory addressвЂ™ (eg read *0x8308).ДЄdd else function to batch processing. The variable address is changed from 0x8304 to 0x8308, from 32 bits to 64 bits. The function subscript remains unchanged, and the parameter is changed from 32 bits to 64 bits. Add the function exit_g4d to exit GRUB4DOS. When there are multiple CDs, adjust the boot CD to the first CD to suit windows.Д¤. Change the menu directory to: /efi/grub/menu.lstДЈ. Support to use the kernel and initrd commands to start the linux kernel.ДЎ. So far our fellow wimb was able to sucessfully UEFI boot Win10XPE_ењ†4.ISO, from internal HD and also from a USB device, hope he will share his experiences with all of us. On this topic we will talk about the experiences with this new version, as not all the usual commands work on this version. Hope this desition is fine with forum admins. I made that desition because unfortunately the author hasn't opened a topic on this forum. This new grub4dos for UEFI was developed by yaya, so in no way I'm involved on it's development, but I think this thread deserves to be on this section of the forum just because the relevance of the subject. Please remember this is a work in progress so it is an experimental version. There is a new version of grub4dos for UEFI, made by yaya, this is his third version: