orangepower Posted May 22, 2020 Share Posted May 22, 2020 Hi I`m trying to set NAS server (OMV) on nanopi M4v2 with sata HAT and eMMC. I have instaled OMV but it is working realy slow and I want to make another clean install. I`m using Armbian Buster from here https://www.armbian.com/nanopi-m4-v2/ I`m tryng now for 4 hours to boot from fresh made SD card but I always end up on eMMC module. If I unplug module I can boot from SD card. I was trying Recovery key and PWR key combination but with no luck What can I try next. Thank you for help! 0 Quote Link to comment Share on other sites More sharing options...
martinayotte Posted May 22, 2020 Share Posted May 22, 2020 27 minutes ago, orangepower said: I`m tryng now for 4 hours to boot from fresh made SD card but I always end up on eMMC module. Rockchip SoCs always have eMMC as boot priority. So, to boot from SDCard, you need to stop U-Boot from eMMC by pressing <spacebar> several times during startup. Then, at U-Boot command line, you can type "setenv devnum 1" followed with "run mmc_boot", it will then boot from SD. 1 Quote Link to comment Share on other sites More sharing options...
le51 Posted May 23, 2020 Share Posted May 23, 2020 thank you @martinayotte for the tip. @orangepower : as you, I was in such a trouble: my solution was to remove emmc module from the nanoPi and then from my PC erase emmc's content using an usb2emmc adapter. Kind of brutal solution but really efficient 0 Quote Link to comment Share on other sites More sharing options...
orangepower Posted May 25, 2020 Author Share Posted May 25, 2020 I also bought emmc2microsd but there is a problem with small notch on it. My emmc plug in oposite way and than there is no way you can plug microsd anywhere. After a while I forced it in oposide way and was able to erase emmc with PC. There was no chance to stop booting to go to U-boot. It simply does not work.. But I manage to solve this probem..by force.. 0 Quote Link to comment Share on other sites More sharing options...
Ogy Posted May 31, 2020 Share Posted May 31, 2020 I use usb to ttl (pc) and from terminal console: mmc erase blk$ cnt 0 Quote Link to comment Share on other sites More sharing options...
Lennyz1988 Posted July 23, 2021 Share Posted July 23, 2021 I don't know if this is still relevant. But maybe for future reference. If you remove the EMMC chip, power up the board and after 1 or 2 seconds plug the EMMC module in. That way the board boots from the SDcard and the EMMC chip is still recognized. I was able to manually mount the EMMC chip and/or reflash using armbian-config. 0 Quote Link to comment Share on other sites More sharing options...
Guest Posted June 18, 2022 Share Posted June 18, 2022 Flashing Buster on the emmc with my pc with Balenaetcher has always worked well for me. I use the SD card only to do offline emmc image backup...SD card has just Armbian server OS on it for doing this. Running OMV5 + 4xSata-hat on Armbian 22.05.1 Buster with Linux 4.4.213-rk3399 0 Quote Link to comment Share on other sites More sharing options...
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