#+TITLE: Installing Mobian on PinePhone
#+SHORT-TITLE: mobian
#+TOC-KEYWORDS: PinePhone
#+KEYWORDS: PinePhone, Mobian
#+DESCRIPTION: Mobian on PinePhone


#+BEGIN(menu):left
[[toc][]]
#+END

* Related pages
- [[https://wiki.mobian.org/][read about mobian]]
- [[pine][PinePhone is not a phone]]

* Installing mobian
I assume that we have [[pine][Manjaro running]] on our PinePhone and we have connected it to a /normal/ computer so we can use /normal/ keyboard and /normal/ screen.
Also I assume that we have an SDHC card installed in the phone, and we want to install [[https://wiki.mobian.org/][mobian]] onto this SDHC card.

In order to install [[https://mobian-project.org/][mobian]],
we need to copy one of [[https://wiki.mobian.org/doku.php?id=install-linux][pre-built images]] to the SDHC card inside PinePhone.
#+BEGIN(src) shell
time bmaptool copy https://mobian-image.img.gz /dev/mmcblk0
#+END
where [[src:mobian-image.img.gz]] should be replaced by the actual (long) address of the image.
After that, if we are lucky, we can reboot from Manjaro into Mobian.

Mobian creators (used to) produce daily images, and not all of them are going to work.
In case the image does not work, I pull the SDHC card out of the PinePhone,
insert it into my desktop and run
#+BEGIN(src) shell
dd if=/dev/zero of=/dev/sdX bs=8k seek=1 count=4
#+END
where [[src:/dev/sdX]] is the name of the SDHC card on the desktop.

* Small SDHC card
Suppose we use a 16gb SDHC card.
Before running [[src:bmaptool]] its partition table was
#+BEGIN(src) shell
fdisk -l /dev/mmcblk0
Disk /dev/mmcblk0: 14.73 GiB, 15819866112 bytes, 30898176 sectors
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/mmcblk0p1 *     2048 30898175 30896128 14.7G  c W95 FAT32 (LBA)
#+END
Then, after running [[src:bmaptool]] it was changed to
#+BEGIN(src) shell
fdisk -l /dev/mmcblk0
Disk /dev/mmcblk0: 14.73 GiB, 15819866112 bytes, 30898176 sectors
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: 0x3b1d2aeb

Device         Boot   Start     End Sectors  Size Id Type
/dev/mmcblk0p1 *      16384 1048575 1032192  504M 83 Linux
/dev/mmcblk0p2      1048576 7421874 6373299    3G 83 Linux
#+END
We see that most part of the SDHC is now unused.
I do not remember how did I fix this problem, 
probably I've just extended the second partition,
please [[mailto:oleg@chalaev.com][share your experience]].

* Problem with large SDHC card
In 2021 I had problems with starting Mobian on a larger (256gb) SDHC card.

When booting into fresh-new Mobian, first I saw a message
"resizing file system during initial boot".

Then I got thousands of messages like
#+BEGIN(src) shell
[migrate_block: 56] Migrate node block XXXX -> YYYYY
#+END
for about 2 minutes.

After that:
#+BEGIN(src) shell
Not enough spase to migrate blocks Try to do defragment: Skip
[migrate_main: 199] Info: Done to migrate main area: main_blkaddr = 0x2200 -> 0x2d400
[migrate_ssa: ...] ...
[migrate_nat: ...] ...
[migrate_sit: ...] ...
....
mounting /dev/mmcblk0p2 on /root failed: Structure needs cleaning
#+END

Then I receive several more alarming (at the level of panic) messages, and the system freezes.

* Vague: how did I fix it
Preparing SDHC card on desktop:
#+BEGIN(src) shell
wget https://mobian-image.img.gz
time ( zcat mobian-image.img.gz | dd bs=64k of=/dev/sdX status=progress )
#+END
After that the partition table is
#+BEGIN(src) shell
fdisk -l /dev/sdX
Disk /dev/sdX: 238.8 GiB, 256355860480 bytes, 500695040 sectors
Disk model: Card  Reader    
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: 0x72b2302e

Device     Boot   Start     End Sectors  Size Id Type
/dev/sdX1  *      16384 1048575 1032192  504M 83 Linux
/dev/sdX2       1048576 7421874 6373299    3G 83 Linux
#+END
where  (ext4-formatted) [[src:/dev/sdX1]] contains
#+BEGIN(src) shell
System.map-5.10-sunxi64  config-5.10-sunxi64  dtb-5.10-sunxi64
extlinux  initrd.img-5.10-sunxi64  lost+found  vmlinuz-5.10-sunxi64
#+END
and [[src:/dev/sdX2]] is almost (96%) full.

As far as I remember, I [[https://forum.pine64.org/showthread.php?tid=13461&pid=93846#pid93846][followed this advice]] doing
"resizepart 2 50%",
"resizepart 2 90%".
"resizepart 2 100%" in [[src:parted]].

* First steps in fresh-new Mobian
#+BEGIN(src) shell
apt-get --no-install-recommends -y install aptitude
aptitude install screen
#+END