[Solved] My phone won't boot with SD card inserted

[AKD251]

I just got my pinephone yesterday and was very excited to test different distros. The phone can boot from SD card without any issue, but I found that after I flashed the image to eMMC and partitioned my SD card again hoping to use it as storage, my phone just won't boot
The SD card is SandDisk Extreme 128GB SDXC that I bought the same day I received the phone, and I'm sure it's genuine.


The screen lights up after holding power button but it won't even show things like red led that implies something went wrong, it just straight out won't boot.
I've already tried the dd command from

Reuse SD card for data storage on system booting from eMMC

in the official guide, and I've checked with gparted that all of the spaces of my SD card is formatted as fat32. (I've also tried NTFS)

The phone will boot into the OS I flashed into eMMC if I pull out the SD card.


Any suggestions will be appreciated!

[acrux]

Are you sure you did everything right here:
https://wiki.pine64.org/wiki/PinePhone_I..._from_eMMC

[AKD251]

https://wiki.pine64.org/wiki/PinePhone_I..._from_eMMC

Thanks for the reply, but I mentioned I did that already in my post

[dukla2000]

Are you sure you did everything right here:
https://wiki.pine64.org/wiki/PinePhone_I..._from_eMMC

+1
(you still have boot bits at the front of the SDcard that have to be cleared.)

[AKD251]

My bad, found out that I need to use the dd command on /dev/sdb (The SD card) instead of /dev/sdb1 (the fat32 partition I created).
I thought accessing /dev/sdb and /dev/sdb1 will be the same if I create a partition using all the free spaces, but apparently I'm horribly wrong.....