Why did you dd to /dev/sdc1. You should copy it to the root sd card at /dev/sdc1 instead

I think that second /dev/sdc1 should be /dev/sdc instead.

Can confirm from messing with SBCs (and RISC machines way back before that) that you will need to get a serial console going. I'm not familiar with this board, but on the StarFive Vision2 and a lot of these, that's probably connecting a USB-serial adapter to specific header pins on the board. Since they try to be RPi compat, it should be the same pins as in instructions for the RPi.

Anyway, sdc1 is data for one partition which is basically always a filesystem. sdc is partition tables, firmware, and partitions.

-s

On 2025-10-04 14:55, Jason wrote:

Did you try to plug a serial cable into it? At least on the orange pi zero there are no lights except etherent light but I do get serial output. Why did you dd to /dev/sdc1. You should copy it to the root sd card at /dev/sdc1 instead

Oct 4, 2025 9:11:35 AM Епишин Василий Ильич <[email protected]>:

Hello!

I want to try OpenBSD. For this I have bought Orange Pi PC2. Before
buying I checked supported hardware list:

https://www.openbsd.org/arm64.html

I read INSTALL.arm64 file. I'm tried to do with SD card:

$ dd if=miniroot77.img of=/dev/sdc1 bs=1m
$ dd if=/usr/share/uboot/orangepi_pc2/u-boot-sunxi-with-spl.bin \
of=/dev/sdc bs=1024 seek=8h

The result:

$ fdisk -l
Disk /dev/sdc: 7.51 GiB, 8068792320 bytes, 15759360 sectors
Disk model: Mass-Storage
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00000000

Device     Boot Start   End Sectors Size Id Type
/dev/sdc1  *    32768 49151   16384   8M  c W95 FAT32 (LBA)
/dev/sdc4       49152 88063   38912  19M a6 OpenBSD

After that I am plugging SD card in Orange Pi PC2 and... Nothing!

With official SD card after plug power cable, red led turns on. Then
when I press the power switch the red led turns off and the green led
turns on and a system starts. When I plug SD card with OpenBSD, all leds
are off. There's no light. I've tried several SD cards -- the same
problem. What am I doing wrong?

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