mirror of
https://github.com/NixOS/mobile-nixos.git
synced 2024-12-27 18:06:13 +03:00
67 lines
2.1 KiB
Markdown
67 lines
2.1 KiB
Markdown
Partitions
|
|
==========
|
|
|
|
Right now, we will **not** touch any partition map.
|
|
|
|
This is because it may break devices.
|
|
|
|
Some (all?) android devices keep a small bit of their internal storage aside to put
|
|
secondary bootloaders in.
|
|
|
|
When the storage is cleared, or their bootloaders stored therein are corrupt, many devices will
|
|
boot to a proprietary download mode. Follows a random picking of links related.
|
|
|
|
* https://forum.xda-developers.com/g2-mini/general/hard-bricked-help-via-aboot-img-abootb-t3212609
|
|
* https://forum.xda-developers.com/android/development/qd-9008-fix-tested-lg-v410g-pad-7-0-att-t3269057
|
|
* https://forum.xda-developers.com/showpost.php?p=75360854&postcount=199
|
|
* https://forum.xda-developers.com/nexus-7-2013/nexus-7-2013-qa/fix-nexus-7-2013-bricked-stuck-t3310608
|
|
|
|
It may be possible to recover, but this is highly device-dependent... and spooky.
|
|
|
|
Here's an example guide from a user that re-partitions their device:
|
|
|
|
* https://forum.xda-developers.com/nexus-7-2013/general/guide-repartition-nexus72013-to-t3599907
|
|
|
|
|
|
* * *
|
|
|
|
Generating a partitions listing
|
|
-------------------------------
|
|
|
|
By adding this to `local.nix`, build an initramfs for your device and boot it.
|
|
|
|
```
|
|
mobile.boot.stage-1.extraUtils = with pkgs; [
|
|
gptfdisk
|
|
];
|
|
```
|
|
|
|
Run this command:
|
|
|
|
```
|
|
adb shell "echo p | gdisk /dev/mmcblk0" > devices/$DEVICE/partitions_$SIZE$UNIT.gdisk
|
|
```
|
|
|
|
Where:
|
|
|
|
* $DEVICE is the device name
|
|
* $SIZE is the size un $UNIT
|
|
* $UNIT is `GB`, as in GigaBytes
|
|
|
|
This will dump everything `gdisk` knows about the partition scheme. Saving it raw will
|
|
allow future tools to re-use the data as dumped to create a better metadata set. It is
|
|
okay if you replace the Disk identifier (GUID) with a string of zeroes. (It is unknown
|
|
if it is truly unique across similar devices.)
|
|
|
|
The storage size is included in the filename as some devices (most?) have different
|
|
variants differing only in their storage size.
|
|
|
|
|
|
* * *
|
|
|
|
### See also
|
|
|
|
* https://source.android.com/devices/bootloader/partitions-images
|
|
* https://forum.xda-developers.com/general/general/android-partitions-explained-t3657183
|
|
|