On Friday 24 August 2018 10:12:54 Dave Cole wrote: > >> THIS is the safest > > way to upgrade a running system: Make multiple partitions. > > No, that's definitely not the safest way. Jon's right. Swap hard > drives. You can't screw up something that's not plugged in! > > If you don't want to do that, then at least image the drive to another > device, like a USB drive, then unplug the drive and put it in a safe > place. > > Been there, done that. > > Dave
I might point out that SSD's pricing are getting very competitive. I've been running 2 of my machines on 60GB SSD's, which are about 3 to 4x faster than spinning rust. Now 120GB's are under 50 bucks. And they are quicker than stink with read rates of 250 megs/second and up. You'' think a 10 yo Dell is a brand new machine. Being aware that they will fail at some point due to write wear, I'd expect the 120's will outlast the 60 by a factor of 4 or so, and the first "60" is 300.5 days old running in the Dell that runs my G0704. Smartctl says no re-allocated sectors yet, pretty good for what is now a $30 drive from newegg. And running the G0704, I'm using only 29% of its 64GB, so I've buckets of room to play in yet. I have 2 on the r-pi, a 64GB and 120+ GB, using them for kernel building workspaces. I might have $70 in them. > On 8/23/2018 10:00 PM, Chris Albertson wrote: > > Swap out the HD? No. Yo can install quite a few copies of > > Linux+EMC on one drive then chose which to boot from the boot menu. > > THIS is the safest way to upgrade a running system: Make multiple > > partitions. > > > > Then it is easy to copy from the old system, you boot the new one > > and mount the old system read-only and copy from it. > > > > On Thu, Aug 23, 2018 at 6:18 PM Jon Elson <el...@pico-systems.com> wrote: > >> On 08/23/2018 08:41 AM, Ed wrote: > >>> I have a lathe that is running 2.5.4 and runs well. > >>> > >>> I get offers from Update Manager to do an update. Can this > >>> be any danger to operation or to any of the ini or hal > >>> files or operation? > >>> > >>> My paranoid gene tells me to ask. > >> > >> Your paranoia is GOOD! I would not update the system. If > >> you want to check out the newer version, > >> at the VERY LEAST, just swap out the hard drive, and install > >> a completely new system from the ISO. > >> If the computer is pretty old, it might be time to update > >> the hardware as well. > >> You can copy over your config file set and machining > >> programs from backups, or using whatever removable media you > >> have available. Most likely, you will have to make some > >> small adjustments to your configs files to make them work on > >> the latest LinuxCNC version. The release notes usually > >> describe what needs to be done accurately. > >> > >> This is the safest way to do things. > >> > >> Jon > >> > >> > >> > >> > >> ------------------------------------------------------------------- > >>----------- Check out the vibrant tech community on one of the > >> world's most engaging tech sites, Slashdot.org! > >> http://sdm.link/slashdot > >> _______________________________________________ > >> Emc-users mailing list > >> Emc-users@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/emc-users > > ---------------------------------------------------------------------- >-------- Check out the vibrant tech community on one of the world's > most engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users -- Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
