E2B - MBR and UEFI booting of large All-In-One Windows Installers

For details about booting to Clover from grub4dos see here.

I was asked recently if it was possible to multiboot large >4GB All-in-One Windows installer ISOs using Easy2Boot in both MBR and UEFI mode.

After some work, I can now answer 'Yes - as long as you use a USB Hard disk for E2B'! - or a USB Flash drive of the 'Fixed Disk' type.

Note: Simone in the Comments below suggests splitting the install.wim file. If this is done with Win 8, you will need to add a special ei.cfg file too, in order to prevent a Microsoft 'licence' error (read the Comments for this blog post for details).

It has always been possible to directly use a AIO ISO on an NTFS-formatted E2B drive for normal MBR-type installs; the problem comes with UEFI installs. UEFI firmware can only boot from FAT filesystems and FAT32 has a 4GB file size limitation. If the Install.wim file is larger than 4GB then we have to place it on an NTFS filesystem.

The new procedure to work around this issue uses two partitions.

Partition 1 - FAT32 - contains all Windows Install files except the Install.wim file
Partition 2 - NTFS  - contains the large \sources\Install.wim file.

You must first make both partition images using MakePartImage. The partition 1 FAT32 image file should be given a filename extension of .imgPTNLBAa. The partition 2 NTFS image file should be given an identical filename but with no file extension at all - e.g.

\_ISO\WIN\Win8AIO.imgPTNLBAa
\_ISO\WIN\Win8AIO

Only the Win8AIO.imgPTNLBAa file will be listed in the Windows menu, but when it is run, the Win8AIO file will be mapped as (hd0,2) and the Win8AIO.imgPTNLBAa file will be mapped as (hd0,0).

In this way, you can boot via MBR or UEFI and install Windows even from an install.wim file larger than 4GB. The latest E2B versions include this feature.

Full step-by-step instructions on how to make the image files are here (scroll down to 'How to add Windows 7/8 installers with >4GB install.wim files').

Some UEFI systems may not like seeing two partitions - please let me know if you try this and what systems you tried it on!

Easy2Boot v1.39 - small bugfix

If you had a FAT32 E2B USB drive and you created a folder with a .  (dot) in the folder name, E2B would give an error during file enumeration. This is now fixed. Thanks to Chase for reporting it!

MPI Tool Pack also has been updated to v1.29. Small fixes for some syslinux ISOs.

New PCLinuxOS ISOs and adding an Answer file to Windows Installer .imgPTN images

It seems that PCLinuxOS has had a major Update - see here for details.

There are KDE, LXDE, Full Monty and Mate Desktop versions as well as a KDE MiniMe version - see the downloads page here to download an ISO and try it out on your Easy2Boot USB drive.

If any of you are using .imgPTN partition image files with Easy2Boot of Windows Vista/7/8 installers and want to add an answer file for automated installs, I have added instructions to the Easy2Boot website here (scroll to the bottom of the page).

New YouTube Video on UEFI support and .imgPTN files now available

I have made a new YouTube video http://www.youtube.com/watch?v=-Oo291vzfv0

I sound a bit 'nasal' due to hay-fever as usual!

E2B v1.38 is just being uploaded now.
No need to update if you are happy with your E2B drive. A few small changes were made, mainly in MyE2B.cfg support for moving the top menu heading down from the first line at the top, to any line (e.g. line 2,3 or 4) and also an option to adjust the offset that is automatically applied to the heading and bottom help text. Some new demo 'themes' have also been added - 'Mac' and 'StripedFlat_1024_pwd_is_fred' which has a master password and is in 1024x768 resolution (thanks Craig!) - see the Gallery here.

If you want to update your E2B drive, just extract the non-DPMS version to your existing E2B drive.

Boot from a Zorin ISO with persistence (Easy2Boot)

Zorin is a good free linux substitute for Windows XP. It feels pretty-much like XP and includes WINE so it can run Windows applications. It seems to have quite a few drivers too (my audio, WiFi, trackpad and video just worked on my Acer 7741 laptop). If you just copy the ISO to your Easy2Boot USB drive it should just work as a 'Live CD' (but it won't boot from a VM - only from a real system as it looks for a real USB drive).

It would be handy to have persistence too. I did this by adding a .mnu file to Easy2Boot and a casper-rw file for persistence.

Persistence seemed to work and Zorin remembered changes to the Desktop, the wireless WPA password and keyboard/country settings. However there were some problems running Windows applications under WINE as there was insufficient temporary file space. I suspect that it was using the ramdrive instead of the persistence file system.

However, you can at least boot to Zorin and use the Chrome browser and play YouTube videos, etc. with the Desktop and country settings, etc. of your choice, without needing to install it.

Note: For Zorin 9 use the Zorin-os-9.1-core-64-persistent.mnu file in 2016 versions of  E2B,

Here are the instructions:

1. Download and copy a Zorin ISO (I used v8.1) to a suitable folder on your E2B drive (must be at 3rd level or deeper) - I used \_ISO\MAINMENU\MNU. Alternatively, the \_ISO\LINUX\MNU folder would also be OK. The 32-bit version would be a better choice if you want it to boot on a wider variety of systems.

2. Use RMPrepUSB to create a file formatted as an ext2 filesystem using the Create ext2 FS button.
    Filename        = zorin32-rw  (or zorin64-rw depending on which ISO you have)
    Volume name = casper-rw
    Size               =   (up to you! - I used 300MB)

3. Copy the appropriate E2B .mnu file (32 or 64-bit version) to the same folder as the .ISO file (see below). The Zorin .mnu files can befound in the \_ISO\docs\Sample mnu files\linus folder.

4. Run RMPrepUSB - Ctrl+F2   (WinContig) to ensure all files are contiguous.

That's it. Now boot it on a real system to try it out.

Instructions are also inside each .mnu file.

You can add many more linux ISOs with persistence in the same manner (even if they all use casper-rw as the persistent file system!). See the \_ISO\docs\Sample mnu files folder for more .mnu files.
This scheme works on both FAT32 and NTFS E2B USB drives (even if the version of linux you are booting to, cannot mount NTFS drives whilst booting).

There are still weird BIOSes about!

I had two issues reported this week concerning booting .imgPTN images from E2B USB drives. Both issues show that even in the last few years, we still have BIOSes which have non-standard boot behaviour!

1. Intel Desktop Mainboard DP67BG

Art found that .imgPTN FAT32 image would not boot on this one mainboard but would boot OK on all other systems he had. It turned out that the partition geometry had to be set to 255 tracks per cylinder and 63 sectors per head instead of 128x63. I have now (v0.027) changed the default in MakePartImage to use 255x63.

2. Lenovo Thinkpad Edge E525 laptop

Alexandre found that on this laptop, it would not even try to boot from a .imgPTN FAT32 image but would boot OK from the same image via UEFI and boot to the E2B partition OK. It turned out that the .imgPTN FAT32 partition needed to be flagged as 'Active' (bootable) otherwise the BIOS would not try to boot from the USB drive in MBR\CSM mode! This was easily done by renaming all his .imgPTN files to .imgPTNA and now they all boot fine.

I am reluctant to always set the partition as Active as it may prevent some UEFI systems from booting (they may not like an 'Active' FAT32 partition and may only boot from it in EUFI mode).

The UEFI specification clearly states that the Boot Flag field '...shall not be used by UEFI firmware'. This does not appear to be the case for the Lenovo UEFI firmware!

If you see any similar behaviour, please let me know.

MenuetOS - a tiny GUI OS!

I found MenuetOS today. An entire GUI OS that can be contained on a single 1.44MB floppy disk!

It is written in x86 assembler and there is a 32-bit and 64-bit version. A new version was released yesterday.

Add it to Easy2Boot and try it out for a bit of fun!

1. Download the floppy image file M64-0.99.58.ZIP  - or the 32-bit version
2. Unzip it to obtain .img file - e.g. M6409958.IMG
3. Copy the file to your E2B drive - e.g. to the \_ISO\MAINMENU folder
4. Try it!

Test using a Real system or QEMU. If you use VirtualBox, I found I needed to set a SB16 Sound  adapter in the Virtual Machine or disable it, and also disable VTx CPU acceleration and set a 32-bit OS. You may need to tweak a few settings to get it to run in VBox.


A more recent version of MenuetOS is Kolibri. The .img file still is only 1.44MB but it has network support, a basic text-only internet browser (WebView) and many games.

WebView showing a page from easy2boot.com

The forum is here, downloads here (.iso or .img works). To run under a VBox VM, I used - linux 32-bit, Sound Blaster 16, IDE, VTx OFF. This boots in just a few seconds!

___________________


I also tried adding the MRI GeekSquad ISO as a .imgPTN image file today and updated my previous blog on it here.

E2B v1.37 now available

• New image partition extensions (see below)
• Make_E2B_USB_Drive.cmd now installs grub4dos to the PBR and MBR

As well as .imgPTN, the following file extensions are now recognised:

.imgPTNA - same as .imgPTN but the partition is made Active (flagged as bootable). This may be required for some WindowsToGo first boot-time images to avoid a 'Windows could not complete' error on first boot. E2B v1.36 and later.

.imgPTNlba - same as .imgPTN but modifies the partition table - use this instead of .imgPTN is some BIOSes won't boot .imgPTN images. v1.37+
.imgPTNlbaA - same as .imgPTNlba but makes the first partition Active.

.imgPTNAlba23 - same as .imgPTNlba but partition entries 2 and 3 are not removed and partition 1 is made Active. This allows you to boot from a Windows image file but still be able to access the 2nd and 3rd partition on the E2B USB Hard disk. This extension cannot be used for UEFI booting. v1.37+

.imgPTNA23 - same as .imgPTNA but does not clear partition entries 2 and 3 - use for WinPE/WinToGo images on E2B USB hard disks where you want access to the 2nd and 3rd partitions when you boot from the image. Not for UEFI booting.  v1.37+

If you have an E2B USB hard drive which has 2 or 3 partitions, when you boot to a WinToGo image using a .imgPTN file, the 2nd and 3rd partitions on the E2B drive will be removed. You therefore cannot access any files on them when you boot to WinToGo. By using a .imgPTNA23 or .imgPTNAlba23 file extension, you can still access the 2nd and 3rd partitions on your E2B USB HDD.

Note that this is only for non-UEFI booting (UEFI booting requires the first partition to be a FAT32 partition).

The best booting compatibility is obtained using standard MBR boot code and a grub4dos PBR, however for Partition Image booting, a grub4dos MBR is required.  Make_E2B_USB_Drive.cmd now installs grub4dos to the PBR and MBR.

MPI Tool pack 0.027

Small change to MakePartImage - it now always creates partitions with a 255 Heads x 63 Sectors per track geometry. This may make the CSM mode more bootable on certain systems/BIOSes.

If you find that the CSM menu does not boot on some systems (but does on most others) please try (in order):

1. Re-make the .imgPTN file using the new 027 version of MakePartImage.
2. Try using a file extension of .imgPTNA and use the latest E2B version.
3. (for non-syslinux bootable images only) Use RMPrepUSB to install grub4dos to the PBR when it is in the CSM image mode (i.e. switch to CSM menu - unplug - re-plug - install grub4dos to PBR).
4. If it still does not boot, please contact me for help.

Easy2Boot v1.36 and MPI Tool Pack v0.026 now available

E2B v1.36 has .imgPTNA file extension support now. This is the same as .imgPTN but will make the partition active. If you read my last blog about WinToGo, you will know that the first boot of a WinToGo installation requires the partition to be marked as active. By using .imgPTNA as the file extension instead of .imgPTN, it saves you the bother of having the extra step of making the partition active using the Windows Disk Management Tool.

E2B v1.36 also has a workaround for a bug in grub4dos to do with files that are exactly a multiple of 4GB (which I found when I made a file that was exactly 20GB in size!).

MPI Tool Pack 026 has a small change to the way I set the menu title - now you won't see 'PAYLOAD=' if you don't use the MPI Tool and just copy the .\csm\menu.lst file to your image (as done in the previous blog). I have also increased the default size for very large ISOs (MS Win Install ISOs seems to be larger when you extract them than the total size of the ISO file - probably due to duplicate files inside the ISO).

Also, I have removed the 'beta1' password from the MPI Tool Pack zip file now as I have had over 40 people who requested the password and no negative reports about anyone losing their E2B drive contents or any other disasters.

If you have tried the MPI Tool and .imgPTN file booting - PLEASE add a comment or just contact me directly to let me know what you have tested and how it went. I realise that the MPI cmd script is very 'wordy' when it runs and may be frightening to some. Is it too flexible? For 90% of cases would you just want it to auto-run and not ask any questions (maybe have two versions - one that just ran automatically with the defaults and another that prompted you for each option?). Did you need to change the defaults at all? Please let me know.

Thanks
Steve

P.S. New french article on E2B at La vache libre