Fév 112017

Following a post from 2014 about booting Winpe over PXE on a UEFI computer, see below a different way to proceed.

-Disable secureboot (or else you’ll need to use a signed bootloader)
-Retrieve latest version of IPXE for UEFI, ipxe-snponly-x86-64.efi and rename it bootia64.efi
-run the following command against your BCD : bcdedit.exe /store BCD /set {bootmgr} nointegritychecks yes
-Use the below wimboot.ipxe script based on Wimboot
-set Tiny PXE Server as below screenshot


set boot-url http://${dhcp-server}
kernel ${boot-url}/wimboot
initrd ${boot-url}/bootmgfw.efi bootmgfw.efi
initrd ${boot-url}/EFI/MICROSOFT/BOOT/BCD BCD
initrd ${boot-url}/BOOT/BOOT.SDI BOOT.SDI
initrd ${boot-url}/SOURCES/BOOT.WIM BOOT.WIM

 Posted by at 15 h 26 min
Mai 172015

Read here for an interesting thread over reboot.pro.

One issue is the BCD is that it is normally linked to one hard drive since it contains (hard coded) the disk id.
The boot manager will assume winload.exe sits on a specific disk/partition.
Meaning you cannot re use it on another system : you have to generate it for each drive using bcdedit command line.
In some cases like automating, cloning, preping, etc, it can be a stopper.

One alternative is to use the « boot » keyword.
You can then re use this bcd from one disk to the other with one constraint thus : you need to have one unique partition (whereas the windows setup will usually creates 2 partition : a hidden/boot one and a system one).
The boot manager will then assume winload.exe sits on the boot partition.
See below the code to create such a « boot » bcd.

@echo off


set LABEL=Windows
set BCDEDIT=bcdedit.exe

Echo Creating store...
%BCDEDIT% /createstore %BCDSTORE%

Echo Creating bootmgr entry...
%BCDEDIT% /store %BCDSTORE% /create {bootmgr}
%BCDEDIT% /store %BCDSTORE% /set {bootmgr} description "Boot Manager"
%BCDEDIT% /store %BCDSTORE% /set {bootmgr} device boot
%BCDEDIT% /store %BCDSTORE% /set {bootmgr} timeout 20

Echo Adding Windows entry...
for /f "tokens=2 delims={}" %%g in ('%BCDEDIT% /store %BCDSTORE% /create /d %LABEL% /application osloader') do set guid={%%g}
echo guid=%guid%
%BCDEDIT% /store %BCDSTORE% /set %guid% device boot
%BCDEDIT% /store %BCDSTORE% /set %guid% path \Windows\system32\winload.exe
%BCDEDIT% /store %BCDSTORE% /set %guid% osdevice boot
%BCDEDIT% /store %BCDSTORE% /set %guid% systemroot \Windows
%BCDEDIT% /store %BCDSTORE% /displayorder %guid% /addlast
%BCDEDIT% /store %BCDSTORE% /default %guid%

One last alternative is to use the less documented « locate » keyword.
The boot manager will actually search for a specific file/folder and chain winload.exe from the partition containing that file/folder.
Get the batch to generate this BCD here.
It should give you a bcd looking like the below.

bcdedit /store c:\temp\bcd.dat
identificateur {bootmgr}
device locate=unknown
description Boot Manager
custom:23000003 {default}
custom:24000001 {default}
custom:25000004 20
identificateur {default}
device locate=\\Windows\\system32\\winload.exe
path \\Windows\\system32\\winload.exe
description Windows
custom:21000001 locate=\\Windows
custom:22000002 \\Windows

 Posted by at 19 h 09 min
Sep 072014

Latest Tiny PXE Server now handles the client system architecture (BIOS, UEFI x32, UEFI x64, etc …).

This allows one to provide the right boot filename based on the client architecture.

Below Tiny PXE Server will send pxeboot.n12 as boot filename (which will chain to bootmgr) and will indicate 00000\bcd as BCD file in BIOS mode.
If UEFI x64 (00007) is detected, and [arch] section filled in the config.ini, it will send bootx64.efi as boot filename and will indicate 00007\bcd as BCD.

See the [arch] section in the config.ini


Tiny PXE Server

Discuss it here.

 Posted by at 18 h 26 min
Sep 072014

Latest changelog :

added : @arch variable can be used in the altfilename (next to @mac and @ip). 00000 = bios, 00006=efi32, etc … see https://www.rfc-editor.org/rfc/rfc4578.txt
fixed : tftpd will also bind if option is checked
modified : if the root folder in config.ini is incorrect, it will be set to the exe current directory
modified : if the filename cannot be resolved (like when using @arch or @mac), it will not prevent execution
modified : tftp will display the full path (within root) for a file request
added : @arch will also be used in opt252
fixed : opt67 in the config.ini would not set the root folder
added : [arch] section in config.ini optional, applies to filename and opt67. ex values -> 00006=bootia32.efi, 00007=bootx64.efi, etc …
added : support for nics.txt for BINL (overule the inf parsing)
fixed : opt13 was incorrect when loading a filename thru config.ini
fixed : opt13 was incorrect when using arch=00007/00006
fixed : when using opt67, would crash if [arch] section was missing
added : can re load settings from config.ini
added : can save settings to config.ini
added : smb checkbox
fixed : httpd uses fmShareDenyWrite to allow multiple i/o to one file
added : sent bootp packet will be word aligned
added : will replace \0 by null char for opt60,66,67 (some pxe clients require a null terminated string there)
added : attempt to support rfc951 = boot request will be handled as dhcp request (rfc951=1 in config.ini)
added : no_hostname=1 in config.ini to skip the server hostname field
changed : if opt54=’′ then skip in makebootp_vend (useless?)
added : no_opt13=1 in config.ini to skip option 13
changed : opt53 skipped if bootp request (i.e not a dhcp request) to be compatible with bootp clients

Discuss it here.
Download here.

 Posted by at 18 h 21 min
Août 262014

UEFI is more and more common on new computers.

It was time for an update within QuickPE to support UEFI.


Once you have generated your Windows X64 UEFI compliant iso, I suggest using Rufus to burn it to a USB key.
Make sure to select GPT for UEFI as partition type and FAT32 as filesystem or else you’ll be booting in BIOS mode.

Juil 052014

I discussed WinFE some weeks ago here.

It got updated with the following significant features (amongst others) : SysWOW64 and UEFI support. See here.

 Posted by at 14 h 59 min
Mai 102014



 Posted by at 20 h 13 min
Mai 062014

There are cases where your operating system is not booting anymore but you really need to retrieve important/personal files.

You could boot a WinPE onto a USB key (using QuickPE and Rufus) to work locally on the faulty computer but you could also do it remotely, confortably settled from another O.S.

Here below the steps :

1-Lets make a WINPE out of  windows (7 or 8) iso/dvd (I use QuickPE) .

2-Boot onto this Winpe (I use rufus to « burn » the winpe iso onto USB).

3-Launch DevIO : from the WinPE command line, type devio -r 9000 \\physiscaldrive0 1 .
Note : the -r is for read only and physicaldrive0 1 for disk 0 partition 1.


4-Launch ImDisk : from a remote host command line, type imdisk -a -t proxy -o ip -f xxx.xxx.xxx.xxx -m X:
Note : replace xxx.xxx.xxx.xxx by the ip of your WinPE / faulty computer


5-At this stage, you should now have a new logical drive letter X: appearing on your remote host.
You can now recover your files remotely !

 Posted by at 12 h 49 min
Avr 262014

More than once did I spend (lose…) long minutes on google to find the proper syntax with windows bcdedit command line.

I came with the quick batch below that will set different entries : win7, winpe, grub4dos, etc …

You need to edit the batch to set the path to your BCD store.

Beware that the BCD is overwritten each time.

Note that this is greatly (mostly) inspired from this page.

@echo off
set BCDEDIT=%SYSTEMROOT%\system32\bcdedit.exe
set BCDSTORE=C:\temp\BCD


rem create - rem if not needed
%BCDEDIT% /createstore %BCDSTORE%

rem create bootmgr entry
%BCDEDIT% /store %BCDSTORE% /create {bootmgr}
%BCDEDIT% /store %BCDSTORE% /set {bootmgr} description "Boot Manager"
%BCDEDIT% /store %BCDSTORE% /set {bootmgr} device boot
%BCDEDIT% /store %BCDSTORE% /set {bootmgr} timeout 20

ECHO _________________________________________
ECHO Menu Choices
ECHO 1 Add Win7
ECHO 3 Add Grub4Dos
ECHO 4 Add Winpe
ECHO 5 Add RamDisk
echo -
ECHO 9 Exit
ECHO _________________________________________

if %userChoice% == 1 GOTO win7
if %userChoice% == 2 GOTO vhdboot
if %userChoice% == 3 GOTO g4d
if %userChoice% == 4 GOTO winpe
if %userChoice% == 5 GOTO ramdisk
if %userChoice% == 6 GOTO ntdlr
if %userChoice% == 9 GOTO QUITMENU

rem add new windows7 entry
for /f "tokens=2 delims={}" %%g in ('%BCDEDIT% /store %BCDSTORE% /create /application osloader') do set guid={%%g}
%BCDEDIT% /store %BCDSTORE% /set %guid% device partition=C:
%BCDEDIT% /store %BCDSTORE% /set %guid% path \Windows\system32\winload.exe
%BCDEDIT% /store %BCDSTORE% /set %guid% osdevice partition=C:
%BCDEDIT% /store %BCDSTORE% /set %guid% systemroot \Windows
%BCDEDIT% /store %BCDSTORE% /set %guid% description "Windows 7"
%BCDEDIT% /store %BCDSTORE% /displayorder %guid% /addlast
goto :eof

%BCDEDIT% /store %BCDSTORE% /create {ntldr}
%BCDEDIT% /store %BCDSTORE% /set {ntldr} device partition=C:
%BCDEDIT% /store %BCDSTORE% /set {ntldr} path \ntldr
%BCDEDIT% /store %BCDSTORE% /set {ntldr} description "Windows XP"
%BCDEDIT% /store %BCDSTORE% /displayorder {ntldr} /addlast
goto :eof

rem add new vhd boot entry
for /f "tokens=2 delims={}" %%g in ('%BCDEDIT% /store %BCDSTORE% /create /application osloader') do set guid={%%g}
%BCDEDIT% /store %BCDSTORE% /set %guid% device vhd=[C:]\disk.vhd
%BCDEDIT% /store %BCDSTORE% /set %guid% path \Windows\system32\winload.exe
%BCDEDIT% /store %BCDSTORE% /set %guid% osdevice vhd=[C:]\disk.vhd
%BCDEDIT% /store %BCDSTORE% /set %guid% systemroot \Windows
%BCDEDIT% /store %BCDSTORE% /set %guid% description "Windows 7 VHDBOOT"
%BCDEDIT% /store %BCDSTORE% /displayorder %guid% /addlast
goto :eof

rem add grub4dos
for /f "tokens=2 delims={}" %%g in ('%BCDEDIT% /store %BCDSTORE% /create /application osloader') do set guid={%%g}
%BCDEDIT% /store %BCDSTORE% /set %guid% device boot
%BCDEDIT% /store %BCDSTORE% /set %guid% path \grldr.mbr
%BCDEDIT% /store %BCDSTORE% /set %guid% description "Grub4dos"
%BCDEDIT% /store %BCDSTORE% /displayorder %guid% /addlast
goto :eof

rem add winpe
for /f "tokens=2 delims={}" %%g in ('%BCDEDIT% /store %BCDSTORE% /create /application osloader') do set guid={%%g}
%BCDEDIT% /store %BCDSTORE% /set %guid% systemroot \Windows
%BCDEDIT% /store %BCDSTORE% /set %guid% detecthal Yes
%BCDEDIT% /store %BCDSTORE% /set %guid% winpe Yes
%BCDEDIT% /store %BCDSTORE% /set %guid% osdevice ramdisk=[boot]\Boot\boot.wim,{ramdiskoptions}
%BCDEDIT% /store %BCDSTORE% /set %guid% device ramdisk=[boot]\Boot\boot.wim,{ramdiskoptions}
%BCDEDIT% /store %BCDSTORE% /set %guid% description "Windows PE"
%BCDEDIT% /store %BCDSTORE% /displayorder %guid% /addlast
goto :eof

rem add ramdisk
%BCDEDIT% /store %BCDSTORE% /create {ramdiskoptions}
%BCDEDIT% /store %BCDSTORE% /set {ramdiskoptions} ramdisksdidevice boot
%BCDEDIT% /store %BCDSTORE% /set {ramdiskoptions} ramdisksdipath \Boot\boot.sdi
goto :eof

echo "this is the end..."

 Posted by at 15 h 54 min