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by dprees
Fri May 22, 2020 11:09 am
Forum: Beginners
Topic: Does a graphical sql client exist for the pi?
Replies: 4
Views: 219

Re: Does a graphical sql client exist for the pi?

phpmyadmin might be what you are after...
by dprees
Tue Apr 07, 2020 8:30 am
Forum: Beginners
Topic: Raspberry Pi not visible in windows network workgroup.
Replies: 3
Views: 280

Re: Raspberry Pi not visible in windows network workgroup.

This is a Windows "feature". Linux (and possibly other non-Windows OSes) do not appear in Windows File Manager network view.

You can still map drives, however, and also browse the Samba shares: use the \\server\share notation.
by dprees
Sat Sep 21, 2019 8:55 am
Forum: Troubleshooting
Topic: [SOLVED] Raspbian on USB/SSD does not boot after upgrade from Stretch to Buster
Replies: 8
Views: 1999

Re: [SOLVED] Raspbian on USB/SSD does not boot after upgrade from Stretch to Buster

Just a follow-up to give results of the upgrade to Buster from Stretch in-situ. The resulting system works, except that wired networking is problematic. I tried duplicating my upgraded install for a test group of three pupils, and normally at least one of them found that the network did not come up....
by dprees
Fri Aug 30, 2019 2:50 pm
Forum: Troubleshooting
Topic: Usb boot not working
Replies: 5
Views: 337

Re: Usb boot not working

There is a way to change the boot order on the Pi 3B(+), and that is to enable the gpioboot OTP flag. Then pulling certain GPIO pins high/low will determine the boot device to use. It is documented with the rest of the USB boot stuff on the main website. Good to know--apologies to the OP for giving...
by dprees
Fri Aug 30, 2019 2:12 pm
Forum: Troubleshooting
Topic: Usb boot not working
Replies: 5
Views: 337

Re: Usb boot not working

You haven't told us which RPi model you are using, but based on the fact that you report you can boot from USB stick if the SD card is not present, then your RPi must be a 3B or 3B+. With either model, the boot process first looks for the presence of a microSD card in the slot, and if one is present...
by dprees
Thu Aug 29, 2019 6:14 am
Forum: General discussion
Topic: Raspberry Pi3 SDCard upgraded to Buster put into RPi4 won't boot
Replies: 6
Views: 735

Re: Raspberry Pi3 SDCard upgraded to Buster put into RPi4 won't boot

It is possible to do this, though as others have told you, it is not recommended/supported. I did it for exactly the reason you give -- my existing Stretch image had considerable effort put into customising it for my pupils, and I didn't want to have to do it all over again (though I do have copious...
by dprees
Mon Aug 26, 2019 4:26 pm
Forum: General discussion
Topic: Raspberry Pi 4 Heatsink vs Fan vs Flirc Case
Replies: 66
Views: 27978

Re: Raspberry Pi 4 Heatsink vs Fan vs Flirc Case

Anyone know where to get Flirc case for RPI4 in UK? I got mine here: https://thepihut.com/products/flirc-raspberry-pi-4-case It really works, just as everyone says. Maximum temp I can get my Pi4 4Gb once I put it into the FLIRC case was 61C, no matter how hard I stress it (at stock, btw...no overcl...
by dprees
Sat Aug 24, 2019 8:53 pm
Forum: General discussion
Topic: Raspberry Pi 4 usb boot?
Replies: 574
Views: 220225

Re: Raspberry Pi 4 usb boot?

Yeah... Good use case. I would suggest a possible alternative that will be implemented sooner than USB booting. That is, get a router, not connected to the school network--so no issues there--and set up network booting. Biggest problem would be--so far as I know--that you'd have to run a LAN to all...
by dprees
Sat Aug 24, 2019 8:44 pm
Forum: General discussion
Topic: Raspberry Pi 4 usb boot?
Replies: 574
Views: 220225

Re: Raspberry Pi 4 usb boot?

This is a case where sourcing a collection of tiny capacity old SDCards (get the kids to supply them for a $1 each) would make sense. You only need 256MB for Raspbian Buster. Tiny cards won't get stolen because they're not useful in a cellphone or GoPro or dashcam. They aren't written beyond adding...
by dprees
Sat Aug 24, 2019 6:49 pm
Forum: General discussion
Topic: Raspberry Pi 4 usb boot?
Replies: 574
Views: 220225

Re: Raspberry Pi 4 usb boot?

In the classroom environment, we found the microSD cards to be problematic. No issues with reliability or performance, but they are so small that pilfering is potentially an issue, made worse by the fact that pupils often have smartphones which could use some extra storage--and a microSD card was p...
by dprees
Sat Aug 24, 2019 6:16 pm
Forum: General discussion
Topic: Raspberry Pi 4 usb boot?
Replies: 574
Views: 220225

Re: Raspberry Pi 4 usb boot?

The only use cases that have any show stopper level of need that I have seen are corporate/school environments... Not wishing to add to the flames, so my post below is simply to set out the use case I have where USB boot on the RPi 4 would be of help to me. Quite happy to wait until it turns up, bu...
by dprees
Fri Aug 16, 2019 1:43 pm
Forum: Troubleshooting
Topic: [SOLVED] Raspbian on USB/SSD does not boot after upgrade from Stretch to Buster
Replies: 8
Views: 1999

Re: Raspbian on USB/SSD does not boot after upgrade from Stretch to Buster

"Try adding hdmi_ignore_edid=0xa5000080 to config.txt" worked for me, too.

Many, many thanks!
by dprees
Tue Aug 06, 2019 8:32 am
Forum: Staffroom, classroom and projects
Topic: Teaching with the Raspberry Pi in Scotland
Replies: 2
Views: 4876

Re: Teaching with the Raspberry Pi in Scotland

I've been gradually introducing RPis into my teaching over the past couple of years, and it now features heavily in my N5 and AH lessons. Initially I was unable to connect these RPis to the school network, but eventually I persuaded our IT dept to modify an Ethernet port in my classroom to isolate i...
by dprees
Thu Jun 27, 2019 1:41 pm
Forum: Troubleshooting
Topic: [SOLVED] Raspbian on USB/SSD does not boot after upgrade from Stretch to Buster
Replies: 8
Views: 1999

[SOLVED] Raspbian on USB/SSD does not boot after upgrade from Stretch to Buster

I migrated to booting and running RPis (3B & 3B+) from small (16Gb/32Gb) SSDs for school use a while back, since micro-SD cards had a habit of getting lost somehow by the pupils... I use a USB to SSD cable for this purpuse, connecting the RPi to the SSD. THis has been a stable system for 12 months, ...
by dprees
Thu Sep 07, 2017 10:05 pm
Forum: Advanced users
Topic: kali linux on USB
Replies: 2
Views: 1282

Re: kali linux on USB

I've been struggling with this too, with no success so far. I'm sure there is a way, but my Linux skills are not yet up to figuring it out. If someone finds a way, even some time in the future, please post it.

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