Wednesday, 20 March 2019

E2B v1.B0h available

This version v1.B0h has a few very small tweaks to the Make_E2B.exe GUI but I also have removed nircmd.exe from the SDI_CHOCO folder because this was causing some AV software problems when downloading or extracting E2B.

nircmd.exe is still used by SDI_CHOCO and it still speaks to you as the installation proceeds, because it extracts the file during the Specialize pass.


Friday, 15 March 2019

Add 'SuperinSecureUEFI-Boot' to your E2B USB drive

There are two projects on GitHub which are of interest to USB-booters.
This was mentioned on reboot.pro recently and also pointed out to me by Alex G.

The first project (by thias) is a multiboot menu system based on grub2 called 'glim'. It automatically detects .iso files and builds a menu each time it boots (does it sound familiar?). It supports UEFI and MBR booting.

The second project (by ValdikSS) includes 'glim' and is a UEFI+MBR multiboot project which allows you to UEFI Secure Boot, UEFI-boot or MBR-boot and then run secure or unsecure payloads from the grub2 menu system.

The downside is that for Secure Boot, you have to register the bespoke grub2 efi file using a certificate that is provided. This adds the certificate into the NVRAM of the system UEFI firmware and so it 'changes' the target system.

Set the timeout so it autoboots if you like!


Use the GRUB Live ISO Multiboot menu entry...

I only added one ISO...

Comparison between UEFIinSecureBoot and E2B grub2 menu system v10


  • E2B grub2 allows Secure Boot without using MokManager and so does not change the target system.
  • Both systems can Secure Boot and run both secure and insecure ISOs and other non-EFI payloads.
  • UEFIinSecureBoot should Secure Boot and run non-secure EFI payloads ??? (not tested).
  • UEFIinSecureBoot can Secure Boot and access files on an NTFS partition, when Secure booted however, E2B grub2 can only access a FAT partition.
  • Both systems can be expanded by adding more menu files.
  • UEFISecureBoot uses a graphical grub2 theme menu, this type of menu runs very slowly on some systems (E2B grub2 menu system dos not use a theme for this reason).
If you want to try this you can download the ready-made .imgPTN23 file here.

Instructions

Thursday, 14 March 2019

E2B v1.B0g Beta now available (Make_E2B.exe now automatically creates 2nd partition if large USB disk)

v1.B0g is now available.

If you make a new E2B USB drive and the USB drive is larger than 128GiB, then the cmd script will now use Windows Diskpart to create a second maximum-sized partition. Note that if you have a >128GiB USB Flash drive (removable-type) then Windows 10 Build 1703 or later is required, otherwise you will just get the usual small 31K 2nd partition.

The filesystem choice is left up to Diskpart to decide - if the second partition is less than 32GB, it will be formatted as FAT32, if larger then it will be formatted as NTFS.

You can still make a single large first partition if you wish, if you run the .cmd file instead of the clicking the big red button in Make_E2B.exe.

Changes from the current v1.A0 released version are:

Sunday, 10 March 2019

E2B 1.B0f available

The latest version is v1.B0f Beta version which has a few small bug fixes.
Check the Version History for details.

Thursday, 7 March 2019

At least two pupils in the same school class will have the same birthday - probably! (the 'Birthday Paradox')

Our old Maths teacher always used to do this trick with every new class intake each year...

First, he would ask the question 'What are the chances that at least two pupils in this class have the same Birthday'?

After asking for our guesses, he would ask anyone in the class to raise their hand if they had a Birthday in January. Then he would ask each of the pupils who had raised a hand to shout out the day they were born on, e.g.Tom shouts '21st', Victor shouts '12th', etc. and then he would go on to February, etc. until someone else shouted out 'YES' if they had the same Birthday.

Theoretically, with a class size of 30 pupils, there is a 70% chance that two or more pupils in the same class will share the same Birthday (and probably the same birth-year as well). Our Maths teacher would tell us that he would explain this when we came to study probabilities, but he also said something else which peaked our curiosity...

He said that he had been doing this test for many years now and with many classes, and that he has found that the probability was actually much better than the theoretical 70% figure!

He would then ask if anyone could think of why this should be?