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by Darktrax
Fri Nov 08, 2019 4:50 pm
Forum: Advanced users
Topic: Raspberry Pi4 fail in the very moment I connect a second hard drive
Replies: 8
Views: 420

Re: Raspberry Pi4 fail in the very moment I connect a second hard drive

The system was even configured to run the OS from the drives. /boot on micro SD card. / (rootfs) on 256GB SSD (top drive in picture). /home on 500GB SSD (bottom drive in picture). Wow! That's a really cool setup! How do you configure the different devices to hold different parts of the OS? When you...
by Darktrax
Sun Sep 15, 2019 8:00 pm
Forum: Troubleshooting
Topic: Please help fix window manager - can't move nor close
Replies: 1
Views: 80

Re: Please help fix window manager - can't move nor close

I got lucky and found a fix by accident. A work-around maybe, because it does not involve understanding, nor fixing any configuration files. Right-click on the desktop, and choose --> Desktop Preferences OR.. Menu --> Preferences--> Appearance Settings Choose the "Defaults" tab. It is very dumbed-do...
by Darktrax
Sun Sep 15, 2019 6:23 pm
Forum: Troubleshooting
Topic: Please help fix window manager - can't move nor close
Replies: 1
Views: 80

Please help fix window manager - can't move nor close

I made a bad mistake - I followed Internet advice on how to change click-to focus to mouse-hover-over-window focus. "Use obconf" it said, and this openbox window manager was apparently already there. I clicked the option do exactly that, and from then on, we are in a mess! Basically one cannot close...
by Darktrax
Sat Aug 10, 2019 5:53 pm
Forum: General programming discussion
Topic: I tried lshw on a Raspberry Pi 4 !
Replies: 2
Views: 1631

I tried lshw on a Raspberry Pi 4 !

Thinking to install Eclipse IDE on my RPi 4, I checked. I tried lshw to list all the hardware, and it reports.. description: ARMv7 Processor rev3 (v7l) product: Raspberry Pi 4 model B Rev 1.1 serial: 100000007535ef8 width: 32 bits capabilities: smp Eh! ?? The review said the processor was a Broadcom...
by Darktrax
Sun Jul 28, 2019 12:32 pm
Forum: General discussion
Topic: Raspberry Pi 4 usb boot?
Replies: 445
Views: 109709

Re: Raspberry Pi 4 usb boot?

RonR: More thanks. This time I got there! There are many little situations that can arise.. Clicking on the shell script icon, and letting the GUI offer a choice to "Run" or "Run in Terminal" is what tripped it up. As in your post, the right way is opening a terminal and using sudo ./usb-boot, which...
by Darktrax
Sat Jul 27, 2019 12:06 pm
Forum: General discussion
Topic: Raspberry Pi 4 usb boot?
Replies: 445
Views: 109709

Re: Raspberry Pi 4 usb boot?

Much simpler and less error-prone: 1. Write a Raspbian Buster image to your USB drive with Etcher . 2. Write a Raspbian Buster image to an SD card with Etcher . 3. Plug the USB drive and SD card into Pi4 and boot it up. 4. Run usb-boot , answering 'No' to 'Replicate BOOT/ROOT contents from /dev/mmc...
by Darktrax
Sat Jul 27, 2019 9:43 am
Forum: General discussion
Topic: Raspberry Pi 4 usb boot?
Replies: 445
Views: 109709

Re: Raspberry Pi 4 usb boot?

Thank you Pi 4 folk for the great Pi 4 USB boot recipe and advice. Now suppose the USB drive happens to be a 500GB USB 3.1 SSD (like Samsung T5). Simply plugging it in (experiment) causes a mounting error (:unknown filesystem 'exfat'). I know it's a Microsoft thing, but my LinuxMint seems to treat t...
by Darktrax
Fri Feb 16, 2018 6:16 pm
Forum: RISCOS
Topic: I tried RiscOS Pi
Replies: 3
Views: 6896

I tried RiscOS Pi

Hi all After quite a long time away, I finally got back to the Pi, this time a Pi 3 with a Sandisk SD card that was fast enough not to limit the performance. And - while getting curious, a thing from the long past shows up. I loaded up RiscOS on the Raspberry Pi 3, and I was blown away by the perfor...
by Darktrax
Tue Jan 13, 2015 11:29 pm
Forum: Graphics programming
Topic: Graphics Acronyms & What works with what?
Replies: 15
Views: 6143

Re: Graphics Acronyms & What works with what?

Can one invoke OpenGL ES or OpenVG from such souces, and what does it take? Use a OpenGL ES Wrapper/toolkit like JOGL. http://jogamp.org/jogl/www/ ghans Thanks much for the suggestions ghans. Probably with a mix of direct experimentation, and searching out what techniques various folk have used, I ...
by Darktrax
Sun Jan 11, 2015 2:29 pm
Forum: Graphics programming
Topic: Graphics Acronyms & What works with what?
Replies: 15
Views: 6143

Graphics Acronyms & What works with what?

I am new to PI, but what I am trying to read up about does not quite fit in beginner's section. It would be great to get a bit of an overview of how the common programming languages and resources can best be applied to use the built-in features in the Raspberry Pi. There are so many acronyms, librar...
by Darktrax
Sat Jan 03, 2015 5:35 pm
Forum: Troubleshooting
Topic: Copy-Paste? What you see is NOT what you get!
Replies: 7
Views: 2106

Re: Copy-Paste? What you see is NOT what you get!

On *nix a fix is tr -d "\240\302" <file >file.new Should copy file to file.new and remove those unneeded characters. Thanks Joan - indeed it does. We can understand that that most browsers have to be able to recognise and handle all the many flavours of EOL newline combinations, but this is not tru...
by Darktrax
Sat Jan 03, 2015 1:41 am
Forum: Troubleshooting
Topic: Copy-Paste? What you see is NOT what you get!
Replies: 7
Views: 2106

Re: Copy-Paste? What you see is NOT what you get!

Thanks also topguy It looks more like a UNICODE / UTF-8 character set problem. \302\240 is in hex 0xc2 0xA0 which is in this table http://www.utf8-chartable.de/ mean NO_BREAK_SPACE. Being in the UK, I used (as root) raspi-config to set the Locale to en_GB.UTF-8 UTF-8 , which is the recommended choic...
by Darktrax
Sat Jan 03, 2015 1:18 am
Forum: Troubleshooting
Topic: Copy-Paste? What you see is NOT what you get!
Replies: 7
Views: 2106

Re: Copy-Paste? What you see is NOT what you get!

My thanks for the reply. Yes, the numbers in there might indeed be associated with CR and LF escape codes, but I am not completely sure. It begs the question about spaces. I thought a SPACE character ASCII is the same in DOS as well as UNIX formats. The only difference I am aware of is that DOS form...
by Darktrax
Sat Jan 03, 2015 12:11 am
Forum: Troubleshooting
Topic: Copy-Paste? What you see is NOT what you get!
Replies: 7
Views: 2106

Copy-Paste? What you see is NOT what you get!

This is a difficult thing to describe since copy-paste is needed to show examples, but I will try. The Pi is like any other, with Raspbian downloaded last month. The problem came when using copy-paste with using LeafPad (or Nano) to make a simple bash script to try out the vcgencmd commands to explo...
by Darktrax
Mon Dec 01, 2014 9:39 am
Forum: Beginners
Topic: What happened to checksums?
Replies: 3
Views: 606

Re: What happened to checksums?

Thanks very much for the help. The .zip did in fact unpack OK I went back to the SD card, and this time, I tried for Raspian. It worked OK. What (I think) has happened is that (perhaps temporarily), Raspian is the only distro available, despite a main feature of NOOBS being to allow relatively painl...
by Darktrax
Sun Nov 30, 2014 1:52 pm
Forum: Beginners
Topic: What happened to checksums?
Replies: 3
Views: 606

What happened to checksums?

I had an older Raspberry Pi which came with a pre-loaded SD card, worked OK, and has been given to a child. This time, with a newer model B, I tried downloading the NOOBS .zip file to then put on a SD. I have the kit to write to the empty SD card, and it all went well enough for the NOOBS configurat...

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