Recent Posts

Pages: [1] 2 3 ... 10
Raspberry Pi / Pi useful terminal commands
« Last post by norman on October 14, 2021, 09:51:51 am »
free -h checks memory
df -h checks disk space
ifconfig shows network setup
cat /proc/device-tree/model gives Pi model number

Raspberry Pi / Booting Pi 3B from SSD
« Last post by norman on October 14, 2021, 09:23:13 am »
I found a lot of instructions on the internet about how to do this but many were incomplete or were simply just wrong.

The only way I got it to work was to add these lines to config.txt on the existing SD Card :-


Then reboot. This tells the Pi to check for other boot devices.

Once done, in terminal type vcgencmd otp_dump | grep 17:

The output should say 17:3020000a where the 3 indicates that USB boot is enabled.

Now plug the SSD into a computer and using the Raspberry Pi Imager create a new image on it.

Plug the SSD in and remove the SD card. Reboot. It should now work.

I tried to use the SD card copier to copy the SD card image onto the SSD and it didn't work. I kept getting 'Kernel panic-not syncing: VFS: unable to mount root fs on unknown-block(179,2)'

Apparently if you have a Pi 3 (not the B) then you need to format a SD card and just put the file bootcode.bin onto it (available from Pi site). Then put this card in the SD card slot. This tells the Pi to boot from the SSD.

Windows / Application has failed to start because its side-by-side configu
« Last post by norman on August 11, 2021, 10:15:42 am »
"Application has failed to start because its side-by-side configuration is incorrect".

This has loomed up following a recent Windows update.

If you download a program from the internet then try to install it then you get a message similar to the above. It does not install anything.

It seems to be caused by a faulty Microsoft Visual C++ redistributable package. The quickest 'cure' is to go into Control Panel then Programs and Features then REMOVE ALL Microsoft Visual C++ redistributable packages.

Then - reinstall them all. I found a single source here -


Chromebooks / Problem trying to load Linux on Chromebook
« Last post by norman on July 13, 2021, 06:01:36 pm »
If you have a new Chromebook and want to use Linux then you may have an issue. I had problems on my Asus C423 and had to research the issue as they didn't have an answer as to why it wouldn't load.

Found this on -

Google has pulled the latest version of Chrome OS 91. Reports have been emerging that some Chromebook owners are experiencing significant performance regressions on Chrome OS version 91.0.4472.147, the latest stable release. However, in the process of pausing the update on devices, Google has introduced another problem you can no longer install Linux on what has now become the latest release again, version 91.0.4472.114.

After pulling the problematic update to version 91.0.4472.147, Google is now pointing to v91.0.4472.114 as the most recent stable release. However, it looks like the Linux installer app hasn't received the memo regarding the pulled update yet. As reported by Chrome Unboxed, the Linux installer checks if you're running the latest version of the OS before it runs, and it looks like Google's servers still claim that version x.114 isn't the latest anymore, prompting users to update their Chromebooks. Since version x.147 is no longer available, that's not possible x.114 is simply the latest release now. Hence, you can't install Linux on the current release of Chrome OS 91 right now.

I had to tell Asus about this as they clearly didn't know.


General discussions / Windows 11
« Last post by norman on June 24, 2021, 09:04:00 pm »
Windows 11 is coming.

The minimum hardware requirements for Windows 11 include a PC with a dual-core 64-bit CPU, 4GB of RAM, and 64GB of storage. It will be a free upgrade for existing Windows 10 users.

Unless your PC is less than 2 years old it is unlikely that it will fit the minimum spec.

There is a tool to check compatability at -

Linux / Linux LUG meeting 21/07/2021
« Last post by norman on June 01, 2021, 04:20:25 pm »
Next meeting 7pm Wednesday 21st July, 2021 at the Lincoln Bowl, Washingborough Road, Lincoln LN4 1EF.

Operational Status / website not working
« Last post by norman on May 24, 2021, 08:50:25 am »

While we still own the web site address, the site is not operational.

This is due to the fallout between the UK and the EU over Brexit. The EU have pulled the plug on the connection despite the fact that the UK is still part of Europe, meaning that the website and the associated email addresses are 'in limbo'. We are locked out just like all other UK users of .eu websites.

How petty. Children!
TPN Invoicing / Faster pricing percentage updates
« Last post by norman on March 05, 2021, 12:59:32 pm »
If you are doing a large global pricing update and your data is on a network then there is a quicker way of doing it.

Make a note of where your data is currently located. This appears at the top of the main screen.

Create three new directories on your local drive C: and call then MyOldBackup, MyNewBackup and MyData.

Ensure TPN Invoicing is not being updated and don't allow any changes while you carry out this procedure.

Go into Utilities and Backup. Backup your system to C:\MyOldBackup

Once done go into Utilities and Datapath. Alter the data directory to C:\MyData

Now go into Utilities and Restore Data.

Locate the file called BACKUP.ZIP in C:\MyOldBackup and restore this. You are now working with your existing data but on the local C: drive.

Perform your pricing changes.

When done go into Utilities and Backup. Backup the data to C:\MyNewBackup

Now go into Utilities and Datapath. Alter this back to your original network location.

Go into Utilities and Restore. Pick the file BACKUP.ZIP from C:\MyNewBackup and let it restore.

Your amended data is now on the network drive. You have a copy of the original data in C:\MyOldData

Updating on a local drive can be much faster than the network.

TPN Invoicing / Not responding during pricing update
« Last post by norman on March 04, 2021, 08:48:35 pm »
Symptom - you get Not Responding message during very large pricing updates.

The message means it has not refreshed the screen and not that it has stopped. It is a Windows message.

To check this, simply press the CAPS LOCK key. Does the CAPS LOCK light go on? If CAPS LOCK works then it's still running.

Do not press CTL-ALT-DEL and terminate the program. Give it more time.

Apple / Update older Mac when normal update fails
« Last post by norman on March 02, 2021, 04:47:11 pm »
Apple do not allow all older models to be updated to the latest version despite the fact that they are powerful enough.

If you get this then search for PATCHED SUR on the internet. This allows a different method of updating. My 2013 Macbook Pro has updated to Big Sur with this quite happily.

It gets round the software restrictions.

 ;) ;)
Pages: [1] 2 3 ... 10