Go direct to new description including Windows 10
http://www.msfn.org/...-2#entry1117324
UEFI Windows 8 + BIOS Grub4dos = MultiBoot USB-Harddisk
Everything At Once
Windows 8 came on computer with UEFI firmware and GPT partitioning of the internal harddisk.
On trying to boot with my existing USB-harddisk Or CD / DVD then initially Everything Failed.
UEFI does not like Grub4dos and so all boot Images failed. The boot CD's were not compatible with UEFI.
It was time to redesign USB Multiboot.
On computer with UEFI firmware I can Install Windows 8 on normal USB-harddisk having MBR and three primary partitions.
The first Boot partition E: is FAT32 Win8 Format and contains the EFI folder
and the second partition M: is NTFS with Windows 8 System Installed by using WinNTSetup2.
GPT partitioning is not needed and unwanted because it would only boot on UEFI firmware.
Install of Win 8 on USB using UEFI computer and latest beta version of WinNTSetup2 is OK
Did not use any other tool. Boot and EFI folder are created on FAT32 Boot partition.
http://www.msfn.org/...winntsetup-v23/
UEFI_MULTI.exe is program to make Multi-Boot USB-Harddisk to boot computers having BIOS or UEFI firmware
Follow Tutorial UEFI MULTI - http://reboot.pro/to...182-uefi-multi/ and http://www.911cd.net...showtopic=25269
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Manual procedure using Windows 8 Tools to make USB-harddisk bootable on BIOS Or UEFI computer:
Use Win 8 tools bootsect.exe to reset MBR bootcode and FAT32 PBR according to Win8
and use bcdboot.exe to create the Boot and EFI folder for booting Windows 8 from FAT32 partition.
bootsect.exe /nt60 E: /force /mbr
bcdboot.exe M:\Windows /s E: /f ALL
bcdedit.exe can be used to add Grub4dos entry in Boot\BCD for booting ISO and VHD Image files on BIOS computers.
http://diddy.boot-la...ws.htm#windows3
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Now I can boot from USB-harddisk on BIOS and on UEFI computers with Win8 (flat)
and with Grub4dos using all kind of Image files (Linux Parted Magic + LiveXP + 7PE + Portable XP + Win7)
Some Mobo e.g. Gigabyte GA-Z77MX-D3H allow to use F12 Boot Menu
and Select either BIOS or UEFI booting from USB-harddisk.
In my case BIOS Grub4dos booting Image files on UEFI computer is only possible
after switching in UEFI the Advanced OS setting from Win8 to Win7 / Other
For booting Windows 8 then the UEFI Advanced OS setting Win8 is used.
So now really Everything At Once is working.
7PE_x64.png 110.82KB
223 downloads =
Win7-UN.png 287.3KB
242 downloads =
LXP_WIM.png 303.74KB
190 downloads
http://www.youtube.c...h?v=ZZ2cftjyHys
More Info on Universal PE http://reboot.pro/to...pe/#entry166561