boot partition not found

I have installed 20210401-0112-postmarketOS-v21.03-i3wm-0.3-nokia-n900.img to a 32GB SD-Card plugged in to my N900 and booted from SD-Card. After some kernel messages, tons of messages like this "mmc1: unspecified timeout for CMD6 - use generic" appear - and finally the message ""boot partition not found""

moved from pmbootstrap#2030 (closed)

By Dolphin von Chips on 2021-04-09T16:32:01

Did you close the back of the phone? The kernel won't find the SD card otherwise.

By Oliver Smith on 2021-04-10T01:35:16

Yes, i closed the back of the phone after selecting the "External SD card" from U-Boot. That is is starting the kernel and booting with a lot of timeout messages. I am using a 32GB SD-Card (HC-1)...

By robiwan1 on 2021-04-10T17:39:14

Hello, I have the same issue with my sdcard and n900. I can boot maemo laste from sdcard, and then use dd to install pmos into emmc, then modify boot.scr, after that n900 can boot pmos from emmc successful.

By Sou Bunnbu on 2021-04-13T04:33:37

Hi Sou! Thank you for the hint, BUT i want to boot pmos from the SD card NOT from emmc. As you mentioned maemo leste boot successfull from my 32GB SD card, but pmos (installed with dd) does NOT, even though the SD card is the same...

By robiwan1 on 2021-04-13T07:53:12

added device-nokia-n900 type::bug labels

I now have tried another (16GB) SD card - same issue. Kernel ist found and booting, but show tons of "mmc1: unspecified timeout for CMD6" messages and finally the PostmarketOS splash screen shows up, with the messages "boot partition no found"...

By robiwan1 on 2021-04-29T09:01:56

The N900 requires a magnet on back case (which can be found under the kickstand) and that is notorious for falling off on N900s.

If you have a fridge magnet, you can try to stick it at the bottom of the device where the kickstand is located while the phone booting to postmarketOS.

By Danct12 on 2021-05-16T14:50:27

Hi Danct12!

The magnet is definitly NOT the reason for this timeout messages and boot failures, because: .) maemo-leste (https://maemo-leste.github.io/) on another SD card from the same type boots successfully, and .) booting without the whole back case (and therefor without the magnet) gives the same errors/timeouts and boot failure

By robiwan1 on 2021-05-16T20:34:07

maemo-leste (https://maemo-leste.github.io/) on another SD card from the same type boots successfully

maemo leste folks upstreamed a kernel patch that makes this magnet no longer necessary. We could upgrade our kernel to get this in too, patches welcome!

show tons of "mmc1: unspecified timeout for CMD6" messages and finally the PostmarketOS splash screen shows up, with the messages "boot partition no found"...

Yes, this doesn't look pretty. Again, patches welcome, unfortunately I don't have time right now to fix this myself. (But it's only a cosmetic issue, it does boot up successfully.)

Closing, as the "boot partition not found" issue is resolved.

By Oliver Smith on 2021-05-19T21:43:29

closed

We could upgrade our kernel to get this in too, patches welcome!

Maybe we can backport the patch? I tried upgrading to 5.12 and it'll only boot to a black screen so need to look into that in the future.

By Danct12 on 2021-05-24T18:39:26

mentioned in merge request !2308 (merged)

By Danct12 on 2021-07-04T09:39:40