Weird USB problems with Windows 10 1903!

In the last week or so I have been experiencing very odd things with some of my USB drives under Windows 10 x64 1903.

Windows seems to think that the USB drive is corrupt. However, I can look at the drive sectors using RMPrepUSB and it will show what looks like a good MBR and PBRs. However, Windows cannot read the volumes and wants to format both of them!

Rebooting the system does not help.

If I run TestDisk, that also reports very 'wrong' results.

Windows Disk Manager shows the drive with two partitions but it refuses to let me assign a drive letter to them and asks me to 'refresh' Disk Manager (which does no good).

The strange thing is that the USB drive is OK when connected to another system.

The fix!

1. Download and run NirSoft USBDeview.exe (USB Device Viewer).
2. Highlight the USB drive
3. Right-click - Uninstall Selected Devices
4. Now unplug and reconnect the USB drive.
5. Reboot if required.

Magically, Windows now sees two good partitions and gives them both drive letters and all is sweet!

I also found that none of my Sandisk Extreme Pro 128GB USB flash drives would be recognised by Windows (no 'ding' when inserted) when I plugged either of them into the 2nd USB 3 socket on the front of my PC (but all other USB sockets worked OK and other USB flash drives worked OK in all the USB PC sockets!).  Clearly it did not like 'Sandisk Extreme Pro' + USB port 2' as a valid combination! Using USBDeview also fixed this too (after finding the 'Sandisk Extreme Pro' device and uninistalling it and then rebooting).

Add Medicat 18.10 to E2B

Because Medicat uses incompatible and mixed versions of syslinux, the ISO may not work 100% by just extracting the files from the ISO. You can use Rufus to prepare a spare flash drive first. Rufus should update and fix any incompatible versions in the ISO as it installs it onto the USB drive. The alternative if to use the E2B MPI ToolKit on the ISO file to make a .imgPTN file.

Note that the Medicat WinPE is NOT intended to be run as a DVD/ISO (even if it could be made to fit) - the files MUST be extracted from the ISO. MiniWindows will not work correctly unless the files are extracted.

Once you have prepared the spare flash drive you can test that all menu items work and then make a .imgPTN file using the spare flash drive as the 'source' by dragging-and-dropping the spare USB drive icon\letter in Explorer onto the MPI_FAT32 Desktop icon.

Note that Medicat has bugs even when you prepare it in the 'official' way using Rufus.

If you don't have a spare USB drive then just use the Medicat ISO as the source. The latest version of the MPI Tool Kit should prompt you to use syslinux '604' too.

When prompted by MakePartImage to AUTO-CORRECT - answer N, do NOT update the configuration files.

AFAIK the functionality is the same if you directly use the ISO file instead of a 'Rufus' flash drive as the source.


You can also UEFI64 boot from the .imgPTN file to MiniWindows x64.

Medicat - notes and bug fixes

XMLtoE2B version 2.0.48 with bugfix

The previous version sometimes added an extra
</RunSynchronousCommand>
line when adding an SDI_CHOCO section.

This new version should fix the problem.

Easy2Boot v1.B7b with bugfix for non-contiguous files hanging menu loading

I just came across a long-standing bug in grub4dos which has the affect of making E2B freeze when listing a non-contiguous ISO file, as shown below...

It is not supposed to hang!!!

Version 1.B7b avoids this bug by not showing the Volume and UUID details of the ISO which is normally listed under the menu and so avoids the issue.

By habit, I always make files contiguous after I copy them to the E2B drive, so I never noticed until now!  This issue must have been present since E2B v1.B0!

The grub4dos bug report is here.

E2B v1.B6 released

Changes from v1.B5:

• Bugfix - Easy2Boot download self-extracting exe no longer adds the Make_E2B.exe program into the Windows Start Menu
• Bugfix - SWITCH_E2B.exe v1.1.25 - if C: drive compressed/encrypted will still work after warning
• Improve SIZE_E2B and SIZE_HD1 values to nearest GiB instead of nearest 4GiB.
• Licence readme files added for 3rd-party s/w - see \_ISO\docs\Licenses
• E2B now checks for 2019-08-09 version of grub4dos 0.4.6a or later
• MyPwd.g4b added to Sample mnu Files\E2B folder to show example of how to prompt for a master password and have different wallpapers when asking for password
• Latest grub4dos (allows animation to play during user input, adds grub4dos 'setmenu --keyhelp-on and --keyhelp-off commands)
• KBD_DVORAK_USA.g4b keyboard translation file added (thanks to Alex R).
• Latest version of RMPartUSB.exe
• menu.lst changed to fix first frame of animation graphics being displayed just before Main menu (due to new grub4dos)
• ArchiveOS link added to \_ISO\docs\Download URLs folder.
• Change to \_ISO\e2b\grub\bsd.imgptn to fix bug of not booting if located past 2GB on drive (thanks to James for reporting and extensive testing!)
• .isogrub file extension now directly loads \menu.lst if it exists (for all-in-one Acronis ISOs, etc.).

Download from Alternate Sites.

It will be available on FossHub in a few days.

The XJW01 LCR (0.3% accuracy) YouTube video is now uploaded

XJW01 LCR Bridge Meter

Hutale 4.2 LCR-DDS-F meter: LCR ESR Bridge Meter / DDS Function Generator / Frequency Meter

Another interesting LCR Bridge (without any case or 5V power supply) which has approx the same accuracy can be found here. Contact the developer - price is around 60 Euros delivered.

I have not tested this yet but it can also measure Frequency and be used as a frequency generator too!

English User Manual for the XJW01 LCR Bridge

I have spent a lot of time testing, experimenting and then writing this User Manual. I hope it is useful to the owners of this very useful XJW01 Bridge which comes in two case styles (as a kit or ready-made).

Type 2 Mains powered

Type 1 for external power source

Many owners have had difficulties with these, mainly because if you press the wrong button you can destroy all the preset calibration values without warning! With one button press, you can also overwrite the factory preset calibration values. This manual explains how to avoid this pitfall and other gotchas!

Once you understand how to use it, it is a very useful piece of kit.

You can now download my PDF manual from here for a modest fee.

The PDF also includes an example front panel template with the correct (or at least more easily understood) button labels.

Table of Contents

Getting to know the XJW01 LCR Bridge

I was looking for an accurate LCR Bridge recently which could also measure ESR values of capacitors.

I also wanted a low-voltage LCR so that I could test components whilst they were still on the PCB without exceeding any diode/transistor junction voltages and thus get false readings.

The XJW01 LCR bridge seems to be quite good and inexpensive. It is sold on many sites including eBay, Amazon and Ali Express.

E2B v1.B6e with .isoBSD bugfix

James reported a problem when using the .isoBSD file extension with E2B (flashing cursor on boot).

This file extension can be used to boot to FreeBSD and other BSD-based ISOs which are otherwise difficult to multi-boot from.

http://www.easy2boot.com/add-payload-files/freebsd/

The .isoBSD file extension actually uses E2B's \_ISO\e2b\grub\bsd.imgptn (fat12 disk image) file together with the original BSD ISO file to create two new partitions on the E2B drive.

The Beta version 1.6Be ('Latest Beta' folder) has a modified version of the bsd.imgptn file which fixes the issue.

If you are interested in more details, visit the thread at reboot.pro.

Boot KDE Neon with persistence from an ISO

Here is the .mnu file for booting KDE Neon with persistence.

It is essentially the same as the Ubuntu persistence .mnu file except that it loads the kernel file /casper/vmlinuz instead of vminux.efi (which does not exist in KDE Neon).