Failsome Arch Linux install on Chromebook C100P following directions from archlinuxarm.org

gistfile1.txt

See https://archlinuxarm.org/forum/viewtopic.php?f=9&t=15391&p=66761#p66761

Script started on 2021-06-20 16:04:43-04:00
localhost ~ # umount /dev/sda*
umount: /dev/sda: not mounted.
umount: /dev/sda1: not mounted.
umount: /dev/sda2: not mounted.
localhost ~ # fdisk /dev/sda

Welcome to fdisk (util-linux 2.32).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.


Command (m for help): g
Created a new GPT disklabel (GUID: 60E41042-86FD-1346-8249-CFBF8D87B66F).

Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Syncing disks.

localhost ~ # cgpt show /dev/sda
       start        size    part  contents
           0           1          PMBR
           1           1          Pri GPT header
           2          32          Pri GPT table
   120225759          32          Sec GPT table
   120225791           1          Sec GPT header
localhost ~ # cgpt create /dev/sda
localhost ~ # cgpt add -i 1 -t kernel -b 8192 -s 32768 -l Kernel -S 1 -T 5 -P 10 /dev/sda
localhost ~ # cgpt show /dev/sda
       start        size    part  contents
           0           1          PMBR
           1           1          Pri GPT header
           2          32          Pri GPT table
        8192       32768       1  Label: "Kernel"
                                  Type: ChromeOS kernel
                                  UUID: D7719465-678E-874D-B3BA-F19682155CEB
                                  Attr: priority=10 tries=5 successful=1 
   120225759          32          Sec GPT table
   120225791           1          Sec GPT header
localhost ~ # cgpt add -i 2 -t data -b 40960 -s `expr 120225759 - 40960` -l Root /dev/sda
localhost ~ # cgpt show /dev/sda
       start        size    part  contents
           0           1          PMBR
           1           1          Pri GPT header
           2          32          Pri GPT table
        8192       32768       1  Label: "Kernel"
                                  Type: ChromeOS kernel
                                  UUID: D7719465-678E-874D-B3BA-F19682155CEB
                                  Attr: priority=10 tries=5 successful=1 
       40960   120184799       2  Label: "Root"
                                  Type: Linux data
                                  UUID: 19ABAE28-AB61-E046-8880-0CD0014820D7
   120225759          32          Sec GPT table
   120225791           1          Sec GPT header
localhost ~ # partx -a /dev/sda
partx: /dev/sda: error adding partitions 1-2
localhost ~ # mkfs.ext4 /dev/sda2
mke2fs 1.45.5 (07-Jan-2020)
Creating filesystem with 15023099 4k blocks and 3760128 inodes
Filesystem UUID: 60de8e3f-58fe-48bf-9142-3baf2a5ebbe1
Superblock backups stored on blocks: 
	32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 
	4096000, 7962624, 11239424

Allocating group tables: done                            
Writing inode tables: done                            
Creating journal (65536 blocks): done
Writing superblocks and filesystem accounting information: done   

localhost ~ # mkdir root
localhost ~ # mount /dev/sda2 root
localhost ~ # md5sum ArchLinuxARM-veyron-latest.tar.gz 
c4b29f8f98be28be648d3ccf71580fbd  ArchLinuxARM-veyron-latest.tar.gz
localhost ~ # tar -xf ArchLinuxARM-veyron-latest.tar.gz -C root

tar: Ignoring unknown extended header keyword # this line printed twice

Then umounted and rebooted to CTRL/U

After booting, it always hangs with two "start jobs" running.