OK, so I got it figured out, with tips from this site: https://askubuntu.com/questions/176121/dpkg-error-trying-to-overwrite-file-which-is-also-in
The complete instructions for installing LinuxCNC on top of a stock Raspbian install in my case are these: sudo apt-key adv --keyserver hkp://keys.gnupg.net --recv-key 3cb9fd148f374fef echo deb http://linuxcnc.org/ buster base 2.8-rtpreempt | sudo tee -a /etc/apt/sources.list.d/linuxcnc.list sudo apt-get update sudo apt-get install linux-image-4.19.71-rt24-v7l+ sudo dpkg -i --force-overwrite /var/cache/apt/archives/linux-image-4.19.71-rt24-v7l+_4.19.71-rt24-v7l+-4_armhf.deb sudo apt-get -f install sudo apt-get install linuxcnc-uspace This may be more trouble than creating a LinuxCNC boot sd card to begin with if you don't already have Raspbian installed, but I had a fair amount of trouble getting a boot device going, and didn't care to start over. This was quick and easy once I got past the dpkg overwrite error. -- Ralph ________________________________________ From: John Dammeyer [[email protected]] Sent: Friday, November 27, 2020 1:13 PM To: 'Enhanced Machine Controller (EMC)' Subject: Re: [Emc-users] Installing LCNC on Raspberrypi 3B+ CAUTION: This email originated from outside the Walla Walla University email system. > -----Original Message----- > From: Jon Elson [mailto:[email protected]] > Sent: November-27-20 11:41 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Installing LCNC on Raspberrypi 3B+ > > On 11/27/2020 12:53 PM, John Dammeyer wrote: > > I just put the brain dead LinuxCNC distribution onto an SD card. Then > > booted and pulled the ini and hal files from the PC into the > proper folder. > BDI (Brain Dead Install)? But, that's a 20 year old > system, X-86 only, and it would be hard to find hardware the > kernel would know how to install on. Or, am I hopelessly > out of date? > > Jon When it was announced that a Pi version of LinuxCNC 2.8 was available an image for the SD card was talked about. I went to the site and downloaded it. Don't remember exactly where. https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fforum.linuxcnc.org%2F18-computer%2F36879-raspberry-pi-4%3Fstart%3D440&data=04%7C01%7Cralph.stirling%40wallawalla.edu%7Cb195954e92d14de73dbc08d893195622%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C1%7C637421084324365564%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=rKaZ12njwUiG6MlJzOq1mZ8nw5OxrvFuDihMdjStlGc%3D&reserved=0 John Dammeyer > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Cralph.stirling%40wallawalla.edu%7Cb195954e92d14de73dbc08d893195622%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C1%7C637421084324375565%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=SHCgw0xtn1he3b5IqIEK9jjuplAWE8fJtKg1eDodh8k%3D&reserved=0 _______________________________________________ Emc-users mailing list [email protected] https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Cralph.stirling%40wallawalla.edu%7Cb195954e92d14de73dbc08d893195622%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C1%7C637421084324375565%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=SHCgw0xtn1he3b5IqIEK9jjuplAWE8fJtKg1eDodh8k%3D&reserved=0 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
