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Thanks for the reply, Tall Man. In a way, that was the point. My experience is really only with my home network use and with nvme information displayed by linux tools which seem to insist on the xnypz suffix on the root word nvme. I continued reading up on the general topic overnight and it seems that in the dtb tree world, the focus is on structuring cohesion and delaying actuating instances, so I am guessing different (more general) descriptors are used. My query was whether the precise descriptor was correct as I could see other options possible, one of which had, I think, popped up elsewhere. Since I had seen other reports of difficulties in loading systems to devices, I thought it a remote possibility that a typo had crept in. I still havent found anything definitive in my reading re the formats of the abstractions in the dt stack. I am interested in knowing about this but I as my Armbian is up and running now, and I identified the actual issue for me was a sd card error, the pressure is off . So, I hope this ramble was not too tedious and I do appreciate that you took the time to answer, and again, thanh you cheers

Belay that. I copied trixie to ssd and it fired up just fine without sd in slot. However, I dont yet understand nvme addressing requirements, but I can now read up on it.. so, for me, solved. Thanks

Also in 25.8.2

Hi, SD card did not load Armbian_25.8.1_Orangepi5_trixie_current_6.12.41_xfce_desktop. I noticed that in boot.cmd line 9 , rootdev is defined as /dev/mmcblk0p1. Should that be /dev/mmcblk0n1 or /dev/mmcblk0n1p1? I note that this file should not be edited and the armbianEnv.txt only refers to rootdev=UUID=7e27c862-0a39-41cd-891e-7d77ff7968fd. Is this an error or am I off course? If so where do I correct it? cheers

I just saw advice from martinayotte Posted May 23, 2020 "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." I've made a note of this for myself as well, cheers

Hi, have you sorted this out? If not, I suggest that you reload the original downloaded os or a fresh copy back to the reformatted microSD card. Also note advice re the SD quality written elsewhere on this forum. That should give you access to the system. Then you can review your procedures for setting up the NVME and boot options and try again.