Résultats de recherche : ipxe

Mai 102014
 

 

 

 Posted by at 20 h 13 min
Mai 102014
 

PartedMagic is a disk management solution.
It does disk partitioning, disk cloning, data rescue, disk erasing, benchmarking.
Note, since August 2013, the tool has required a fee to download.

Lets now see how to PXE boot this linux distribution.

For this we will use TinyPXE Server and IPXE.

 

First lets prepare our iPXE script (save it to rescue.ipxe)

#!ipxe
set boot-url http://${next-server}
kernel ${boot-url}/memdisk iso
initrd ${boot-url}/images/pmagic/pmagic_2013_02_28.iso
boot

Now, lets setup TinyPXE Server

pmagic

Now, lets boot !

Note :

-My iso is from february 2013, I cannot tell for sure it earlier or newer ISO’s will boot thru PXE

-This method (using memdisk) requires at least twice the size of the iso (lets round it up to 1 gb). if this is an issue, you may want to revert to booting pmagic filesquash.

 Posted by at 19 h 43 min

TinyPXE Server

 

I have been playing with pxe booting for a while, first starting with pxelinux, then gpxe and lately with ipxe.

I am mostly a windows user and as an IT often needs a quick (=no install) and portable (=run from USB) dhcp server including a tftp server and a http server offering me then pxe booting.
I could use tftp32 or serva but i like to make my own tools and these 2 were missing some features here and there.

So here comes a small portable dhcp server including a tftp and a http server.

This is freeware (and will always be), should be opensource and the unique here idea is to share and contribute.

-dhcp daemon supports an alternative filename based on the user-class thus enabling chainloading (gpxe->pxelinux, ipxe->script, etc), and also support settings dhcp options (which can then be used by your boot loader)
-tftp daemon supports tsize and blksize commands.
-http daemon support head, range (mandatory for ipxe sanboot options) and over 2gb iso.
-new in version 1.0.0.7 : BINL (RIS & WDS) support
-new in version 1.0.0.10 : DNS daemon
-new in version 1.0.0.14 : ProxyDHCP option

The root home of tftp and http is the folder where you main pxe loader sits.
I put all my iso files in a sub folder called images.
I put all my wim files in a sub folder called sources.
I put all my other loaders, in case I want to chain load, in next to my main loader (bootmgr, pxelinux, gpxe, grldr, etc)

In the attached screenshot, i load ipxe then chainloads a script (menu.ipxe).
In the script 3 different methods : the classic memdisk, a newer approach with sanboot and a new kid on the block wimboot.

More info about these loading methods here :
http://www.syslinux….dex.php/MEMDISK
http://ipxe.org/cmd/sanboot
http://ipxe.org/wimboot

Side note about ipxe+sanboot+http : I am big fan.
I have always been looking for a quick and efficient boot from lan methods and this is one is great : executes as it read and faster than memdisk since no preloading of the ISO is required.
iPXE reaches 50/60 MBits/secs on my lan.

« Voila ».
Download here
Any questions, feedback is welcome here
Some quick how to’s here and here
Excellent and exhaustive guide here by Misty.
Contact me

rescue

 Posted by at 0 h 38 min
Mar 122014
 

About SystemRescueCD :

Description: SystemRescueCd is a Linux system rescue disk available as a bootable CD-ROM or USB stick for administrating or repairing your system and data after a crash. It aims to provide an easy way to carry out admin tasks on your computer, such as creating and editing the hard disk partitions. It comes with a lot of linux software such as system tools (parted, partimage, fstools, …) and basic tools (editors, midnight commander, network tools). It can be used for both Linux and windows computers, and on desktops as well as servers. This rescue system requires no installation as it can be booted from a CD/DVD drive or USB stick, but it can be installed on the hard disk if you wish. The kernel supports all important file systems (ext2/ext3/ext4, reiserfs, btrfs, xfs, jfs, vfat, ntfs), as well as network filesystems (samba and nfs).

Now as you have understood by now, whenever I can, I skip burning CD/DVD’s and will at worse use a USB stick or at best use PXE Boot.

Lets use TinyPXE Server + iPXE.

First lets prepare our iPXE script (save it to rescue.ipxe)


#!ipxe
set boot-url http://${next-server}
kernel ${boot-url}/sysrcd-4.1.0/isolinux/rescue32 dodhcp netboot=${boot-url}/sysrcd-4.1.0/sysrcd.dat
initrd ${boot-url}/sysrcd-4.1.0/isolinux/initram.igz
boot

Then lets prepare our files

Extrat the content of SystemRescueCD iso to /sysrcd-4.1.0, next to TinyPXE Server.
You can use 7Zip for this operation.

Now, lets setup TinyPXE Server

rescue

Now, lets boot !

 Posted by at 20 h 20 min
Mar 112014
 

In previous article, we have seen how to make a bootable disk image using CloneDisk.

Lets see now how to boot this disk image thru PXE boot with TinyPXE Server.

1-Prepare the the IPXE script
2-Setup TinyPXE Server
3-PXE Boot !

1-Prepare the IPXE script and save it as disk.ipxe

Pretty simple

#!ipxe
set boot-url http://${next-server}
initrd ${boot-url}/test.vhd
kernel ${boot-url}/memdisk raw
boot

2-Setup TinyPXE Server

Next to pxesrv.exe, in the same folder, you must have the following files :
-disk.ipxe (see previous item)
-ipxe-undionly.kpxe (in TPS zip file)
-memdisk (in TPS zip file)
-test.vhd (see previous article)

Now set TinyPXE Server as follow

tps_howto1

3-PXE boot

 Posted by at 14 h 15 min
Jan 132014
 

 

  • fixed: remoteport=4011 when srcport=4011 -> was preventing some ipxe client to boot (uefi for exemple)
  • changed: opt60=empty by default when using opt67 (was ‘PXEClient’ before) -> was preventing ipxe client to boot with opt67
  • changed: opt60=’PXEClient’ when proxydhcp=1 (was hardcoded before) -> more flexible
  • fixed: xid is now displayed correctly -> was reversed order
  • fixed: was sending an empty boot filename in proxydhcp in the dhcp_offer stage -> removed, was preventing proxydhcp+opt67
  • changed: bind=true by default when multiple interfaces detected -> was preventing pxe boot with multiple interfaces when bind=false

Discuss it here.

 Posted by at 23 h 26 min
Jan 122014
 

Here below some drafts notes on how to boot WINPE on a UEFI computers.

1/Files you need from your windows x64 dvd

-\efi\boot\bootx64.efi file (1)
-\efi\boot\bcd file (2)
-\efi\boot\boot.sdi file (3)
-\efi\microsoft\boot\fonts folder (4)
-\sources\boot.wim (5)

If you dont find bootx64.efi, you can use bootmgfw.efi which is in install.wim on your dvd (sources folder).
Use 7zip to extract this file from the wim file and rename it to bootx64.efi

2/Files you need in your tftp root

-get in your tftp root
put bootx64.efi (from 1)
-create a SOURCES folder
put boot.wim in there (from 5)
-create a BOOT folder
put boot.sdi in there (from 3)
put bcd in there (from 2) / applies for Win8
-create a EFI/MICROSOFT/BOOT folder
put bcd in there (from 2) / applies for Win7
put the FONT folder in there (from 4)

You should end up with the following :
=>ROOT
-bootx64.efi
==>SOURCES
==boot.wim
==>BOOT
==boot.sdi
==bcd (for win8)
==>EFI/MICROSOFT/BOOT
==bcd (for win7)
===>FONTS
===*.ttf

3/Things you need to do on your boot.wim

Add the following winpeshl.ini (create it with notepad) file in your boot.wim (system32), making it a « cheap » winpe.

To modify your boot.wim, you can either mount/change/commit it with DISM (from the command line), or with CloneDisk or else modify it with wimlib :
wimlib-imagex update boot.wim 1 --command="add CustomWinpeshl.ini \Windows\System32\winpeshl.ini"


[LaunchApps]
%SYSTEMDRIVE%\Windows\system32\startnet.cmd
%SYSTEMDRIVE%\windows\system32\cmd.exe

4/Things you need to do in your PXE Server :

Set bootx64.efi as the bootp filename.

The UEFI + PXE boot process will be the following :
pxe->bootx64.efi (from windows install dvd)->bcd (pointing to winload.efi)->boot.wim (x64 only)

as opposed to a legacy bios computer :
pxe->pxeboot.n12 (from windows install dvd)-> bootmgr.exe -> bcd (pointing to winload.exe) -> boot.wim

Site note : you can use option dhcp 252 to decide which BCD file to load.
Can be handy when you want to switch from a UEFI computer to a legacy BIOS computer : efi\microsoft\boot or boot\bcd

tps_howto_uefi

side note : you can check if you booted on uefi with the following reg query HKLM\System\CurrentControlSet\Control /v PEFirmwareType Will output 0x1 for bios, 0x2 for uefi.

Cheers,
Erwan

Note that the following would aso work : PXE-> IPXE.efi ->MS Bootx64.efi ->BCD (winload.efi) ->Boot.wim (x64).

Ipxe script

#!ipxe
#change with you dhcp or proxydhcp server
set next-server 192.168.1.11
set filename boot/x64/bootmgfw.efi
chain tftp://${next-server}/${filename}

And changes to apply to your BCD : bcdedit.exe /store my.bcd /set {bootmgr} nointegritychecks yes

 Posted by at 21 h 49 min  Tagged with:
Jan 112014
 

There are times where you may not have a dvd drive or media available, or else, you may also want to perform some tasks before triggering the windows setup.

Agenda

  • Prepare winpe with QuickPE
  • Prepare the ipxe script
  • Prepare the PXE server with TinyPxe Server
  • Boot to winpe and Install windows
  • Reboot and complete the installation on the local drive

Prepare winpe with QuickPE

You can either use MS WAIK (winpe3), or MS ADK (winpe4) or an existing windows setup DVD or ISO file.
Launch _run_me.cmd and make your choice.

quickpe_menu

Prepare the ipxe script

The following will attach an iscsi drive and will boot your winpe


#!ipxe
dhcp net0
set boot-url http://${dhcp-server}
initrd ${boot-url}/images/winpe4.iso
kernel ${boot-url}/memdisk iso raw
boot

Prepare the PXE server with TinyPxe Server

Use ipxe-undionly.kpxe as « boot file name » and the above script (name it install.ipxe) as « filename if user-class=iPXE »

tinypxeserver

Boot to Winpe

Now lets network boot (pxe as first device in the bios).
Computer will pxe boot, load ipxe, then load your script.
The script will boot into winpe.

Now we are ready to perform the installation : map a drive thanks to PeNetwork (in the tinyshell launchbar) and map a network share containing your windows installation files.
You could eventually script this part (in batch file) :

net use \\servername\sharename /user:username password
\\servername\sharename\setup.exe

Note1 : CloneDisk can also mount a virtual dvd drive from an iso file (only in winpe4).

Note2 : Rather than launching the setup.exe from the windows DVD, you can also apply a wim file to the target drive using imagex (or clonedisk).
If so, then remember that you need to prepare the drive (partition active, boot sector …).
Example code using imagex (we’ll assume the partition has been made active already) :

Imagex /apply \\servername\sharename\install.wim 1 c:
bcdboot c:\windows /s c:
bootsect /nt60 c: /mbr

Launch the windows setup and let it run.

Reboot to local drive

Windows should the complete the installation, and reboot one last to your windows desktop.

See below a video demonstrating the above steps.

 Posted by at 14 h 51 min
Oct 162013
 

Here below a step by step to PXE boot Linux Mint over NFS

needed :
ipxe
tiny pxe server
winnfsd
Mint

1/Prepare the Linux Mint files

open mint.iso in winrar (or any other iso reading capable tool).
extract casper folder to x:\pxe\iso\mint (or any path that suit you)

2/Prepare NFS Server

launch winnfsd with the following :
winnfsd.exe -id 0 0 x:\pxe\iso\mint

note : adapt the above path with your own path

3/Prepare iPXE Script

#!ipxe
set nfs-server ${next-server}
kernel /ISO/mint/casper/vmlinuz root=/dev/nfs boot=casper netboot=nfs nfsroot=${nfs-server}:/x/ISO/mint quiet splash
initrd /ISO/mint/casper/initrd.lz
boot

note : adapt /x/pxe/ISO/mint to your own path.
name it mint.ipxe and put it in x:\pxe

4/Prepare PXE Server

put ipxe-undionly.kpxe in x:\pxe
launch tiny pxe server with the following settings (leave other settings untouched) :
->boot filename = ipxe-undionly.kpxe (use the browse files and folders « … » button)
->filename if user-class=iPXE = mint.ipxe

push the online button

5/Boot !

pxe boot your computer and here we go 🙂

linux-mint-10-lxde

 Posted by at 19 h 25 min
Sep 282013
 

A person (which I believe is the author of another similar product, thus that other product is nagware and /or payware versus Tiny PXE Server being fully freeware) has been truly harrassing / spamming me over the last days claiming the ownership (if not copyright) around the kernel parameters I used for Ubuntu Live booting (cifs, nfs, etc) in previous articles.

I will recommend this page if you wish to understand more about which kernel parameter does what.

I consider syntax around products like grub4dos, syslinux, ipxe, distros kernels to be public knowledge and therefore free for everyone to copy paste, modify, re use.
Actually there are tons of forums and web sites out there experimenting and sharing findings and knowledge about this.
Some of my favorite forums being http://reboot.pro or iPxe.

Any dev guy claiming copyright over this syntax would (IMHO) look like a fool.

I will not approve comments over my blog around this topic.
Why? Because I can.

I purposedly will not mention or quote that guy harassing me simply.
Why? Because I do not want to encourage such behaviors and because that person does not deserved to be mentionned.

Topic closed…

 Posted by at 13 h 53 min