Ah, and right. This value can be modified in order to reflect a known working kernel. Or "point" to a known working kernel. If you know what you're doing . . . Which is not very simple to explain but not overly hard either. For instance:
$ ls /boot/ SOC.sh config-4.4.14-ti-r34 initrd.img-4.4.14-ti-r34 uboot System.map-4.4.14-ti-r34 config-4.4.14-ti-rt-r34 initrd.img-4.4.14-ti-rt-r34 vmlinuz-4.4.14-ti-r34 System.map-4.4.14-ti-rt-r34 config-4.4.8-ti-r22 initrd.img-4.4.8-ti-r22 vmlinuz-4.4.14-ti-rt-r34 System.map-4.4.8-ti-r22 config-4.4.9-bone-rt-r10 initrd.img-4.4.9-bone-rt-r10 vmlinuz-4.4.8-ti-r22 System.map-4.4.9-bone-rt-r10 dtbs uEnv.txt vmlinuz-4.4.9-bone-rt-r10 and $ ls /boot/dtbs/ 4.4.14-ti-r34 4.4.14-ti-rt-r34 4.4.8-ti-r22 4.4.9-bone-rt-r10 As you can see I have the possibility to load any of these 4 kernel directory "trees" that I show listed in my last command. simply by editing the "uname_r" parameter in the /boot.uEnv.txt file. On Mon, Sep 19, 2016 at 3:07 PM, William Hermans <yyrk...@gmail.com> wrote: > > > On Mon, Sep 19, 2016 at 2:53 PM, Dennis Lee Bieber <wlfr...@ix.netcom.com> > wrote: > >> On Sun, 18 Sep 2016 21:19:49 -0700 (PDT), Viswadeep Sarangi >> <deepun.d...@gmail.com> declaimed the >> following: >> >> >> {I was running late getting to work and missed this part} >> >> >The contents of the FAT partition include : >> >- a "dtbs" directory, which contains a lot of .dtb files >> >- uEnv.txt >> >- zImage file >> > >> >> If the card isn't booting off the SD card, you might have to >> examine >> that uEnv.txt file for things that may be erroneous, since (as I >> understand >> things) it defines some of the stuff used by u-Boot to get to the rest of >> the OS. >> > > At minimum: > > $ cat /boot/uEnv.txt | grep uname > uname_r=4.4.14-ti-r34 > > This is needed in order to find. . . I forget off the top of my head, but > for instance, it refers to the kernel version you wish to run. So without > this set, the default 1st stage uEnv.txt file wont know where to look for > the kernel, and probably the board file device tree overlay. > > This is really easy to check on a Linux system, but would require > *something* in order for Windows to read ext4 file systems. > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CALHSORozdWdx26PcdGO-VGg5Oo6V8i%2BcK4HF0a_Vw5K9UeW%3DzA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.