[LINUX] Instructions for reinstalling the operating system (Debian Desktop Community) that comes with Pinebook Pro by default

1.OS image download
   https://wiki.pine64.org/index.php/Pinebook_Pro_Software_Release
   >> Debian Desktop Community Build Image [microSD to eMMC] by mrfixit2001
   >> Direct download release build 191123 from mrfixit2001s github
   >> https://github.com/mrfixit2001/debian_desktop/releases/download/191123/pinebookpro-debian-desktop-mrfixit-191123.img.xz

2.downloaded.Extract the xz file.Make it img
   pinebookpro-debian-desktop-mrfixit-191123.img.xz
   >> pinebookpro-debian-desktop-mrfixit-191123.img

3.with etcher.Burn img to microSD card (use as OS only to execute dd command)
(Get the etcher here)
      https://www.balena.io/etcher/

4. .Copy img to USB memory (for writing to eMMC)

5.Storage breakdown of Pinebook Pro (The following is a case with 32GB microSD)
   |--------------+---------------+----------+---------------|
   | /dev/mmcblk0 |microSD card| 28.98GiB |Depends on microSD|
   | /dev/mmcblk1 |Built-in eMMC| 58.24GiB |               |
   |--------------+---------------+----------+---------------|
This procedure is mmcblk0(microSD)Write the OS to and use that OS for more mmcblk1(eMMC)Write the OS to.

6.Insert a microSD card into Pinebook Pro and Power ON
   >>Splash of OPEN SESAME comes out
   >>(First launch only) A text-based login screen appears, but don't touch it
   >>(Only for the first startup) If you wait for a while with the login screen, the restart will run.
   >>Splash of OPEN SESAME comes out
   >>GUI login screen appears
   >>Log in below
   |------+------|
   | user | rock |
   | pass | rock |
   |------+------|

7.Insert the USB memory into Pinebook Pro and copy the following files to your desktop
   pinebookpro-debian-desktop-mrfixit-191123.img

8. Menu >> gparted[Enter] >>Launch GParted
9. GParted >>menu>> GParted >> Devices
   /dev/mmcblk1(58.24GiB)To select>>eMMC partition is displayed
10. /dev/Right click on mmcblk1p1>> Unmount (Select an area[Alt]+[P][U]But possible)
11. /dev/Right click on mmcblk1p1>> Delete (Select an area[Alt]+[P][D]Or[Fn]+[Backspace]But possible)
12. /dev/Right click on mmcblk1p2>> Unmount (Select an area[Alt]+[P][U]But possible)
13. /dev/Right click on mmcblk1p2>> Delete (Select an area[Alt]+[P][D]Or[Fn]+[Backspace]But possible)

14.unallocated 58.24GiB area is displayed
15. GParted >> Edit >> Apply All Operations ([Ctrl]+[Possible with "Return") >> [Apply] >> [Close] >>Will be reflected

16. Menu >> terminal >>Open MATE Terminal

17.Do the following
    $ sudo dd if=~/Desktop/pinebookpro-debian-desktop-mrfixit-191123.img of=/dev/mmcblk1 bs=4M status=progress

18.As a result of the dd command, GParted>> GParted >> Refresh Devices ([Ctrl]+[R]) >>The partition table has been modified as follows.
    |----------------+-------------+--------------------+-------+-----------+-----------+------------+-----------|
    | Partition      | File System | Mount Point        | Label | Size      | Used      | Unused     | Flags     |
    |----------------+-------------+--------------------+-------+-----------+-----------+------------+-----------|
    | unallocated    | unallocated |                    |       | 16.00 MiB | ---       | ---        |           |
    | /dev/mmcblk1p1 | fat32       | /media/rock/BOOT   | BOOT  | 64.00 MiB | 49.68 MiB | 14.32 MiB  | boot, lba |
    | unallocated    | unallocated |                    |       | 48.00 MiB | ---       | ---        |           |
    | /dev/mmcblk1p2 | ext4        | /media/rock/xxxx.. |       | 4.88 GiB  | 4.54 GiB  | 349.13 MiB | boot      |
    | unallocated    | unallocated |                    |       | 53.23 GiB | ---       | ---        |           |
    |----------------+-------------+--------------------+-------+-----------+-----------+------------+-----------|
Don't worry, the fact that the fifth partition is unallocated will be appropriate after the OS boots.

19. Menu >> Quit >> [Shut Down] >>Power off>>Remove the microSD card.
    >>This completes the installation of the new OS on the eMMC.

(Bonus: When you boot the OS from eMMC, the partition table should look like this.)
    |----------------+-------------+--------------------+-------+-----------+-----------+-----------+-----------|
    | Partition      | File System | Mount Point        | Label | Size      | Used      | Unused    | Flags     |
    |----------------+-------------+--------------------+-------+-----------+-----------+-----------+-----------|
    | unallocated    | unallocated |                    |       | 16.00 MiB | ---       | ---       |           |
    | /dev/mmcblk1p1 | fat32       | /media/rock/BOOT   | BOOT  | 64.00 MiB | 49.68 MiB | 14.32 MiB | boot, lba |
    | unallocated    | unallocated |                    |       | 48.00 MiB | ---       | ---       |           |
    | /dev/mmcblk1p2 | ext4        | /media/rock/xxxx.. |       | 58.12 GiB | 5.36 GiB  | 52.75GiB  | boot      |
    |----------------+-------------+--------------------+-------+-----------+-----------+-----------+-----------|
The partition table is correct (the 5th partition disappears and is connected to the 4th ext4)