@nero355
I ran the first step

umount /data

before flashing Ubuntu Touch but still same error:

./halium-install -p ut ubports-touch.rootfs-xenial-armhf.tar.gz system.img
[sudo] password for hplaptop: 
D: Chosen rootfs is ubports-touch.rootfs-xenial-armhf.tar.gz
D: Chosen android image is system.img
D: Chosen release is ut
D: Compress images before pushing: false

I: Writing rootfs into mountable image
I: Writing android image into mountable image
I: Running post installation tasks
enabling SSH ... [done]
Please enter a new password for the user 'phablet':
Enter new UNIX password: 
Retype new UNIX password: 
passwd: password updated successfully
I: Shrinking images
e2fsck 1.45.7 (28-Jan-2021)
resize2fs 1.45.7 (28-Jan-2021)
Resizing the filesystem on .halium-install-imgs.amKTn/system.img to 53956 (4k) blocks.
Begin pass 2 (max = 30486)
Relocating blocks             XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Begin pass 3 (max = 18)
Scanning inode table          XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
The filesystem on .halium-install-imgs.amKTn/system.img is now 53956 (4k) blocks long.

I: Unmounting images
I: Pushing rootfs and android image to /data via ADB
I:    Pushing rootfs to /data via ADB
adb: error: failed to copy '.halium-install-imgs.amKTn/rootfs.img' to '/data/rootfs.img': couldn't read from device
.halium-install-imgs.amKTn/rootfs.img:....1 MB/s (1412783680 bytes in 220.153s)
I:    Pushing android image to /data via ADB
adb: error: failed to get feature set: no devices/emulators found

real	3m40.164s
user	0m0.283s
sys	0m1.996s
I: Cleaning up
umount: .halium-install-rootfs.kzAAa: not mounted.
error: no devices/emulators found

I don't why I get this error:

error: no devices/emulators found

The device is clearly there:

adb devices
List of devices attached
fa8d9901	recovery

@nero355
I did the steps on twrp:

umount /data

but now after mounting I get this error:

mount /system-data/ /data
mount: mounting /system-data/ on /data failed: No such file or directory

@nero355
How can I go about doing this?
Is this in twrp?
Sorry, I'm new but willing to learn put in the effort!
Thanks.

@nero355
How can I fix that?
Thanks.

@nero355
I have the log file
Output is here:
https://pastebin.com/E0127KTN
Not too sure what to make of it.
Thanks.

@applee
Yeah I did, but it didn't work.
I can show each step I took.

• Boot into twrp
• Wipe the device

Boot into download and then flash halium via heimdall
Output is shown here:

heimdall flash --BOOT halium-boot.img
Heimdall v1.4.2

Copyright (c) 2010-2017 Benjamin Dobell, Glass Echidna
http://www.glassechidna.com.au/

This software is provided free of charge. Copying and redistribution is
encouraged.

If you appreciate this software and you would like to support future
development please consider donating:
http://www.glassechidna.com.au/donate/

Initialising connection...
Detecting device...
Claiming interface...
Setting up interface...

Initialising protocol...
Protocol initialisation successful.

Beginning session...

Some devices may take up to 2 minutes to respond.
Please be patient!

Session begun.

Downloading device's PIT file...
PIT file download successful.

Uploading BOOT
100%
BOOT upload successful

Ending session...
Rebooting device...
Releasing device interface...

Boot back into recovery.
Then proceed to Flash the system.img and rootfs
Output is shown here:

./halium-install -p ut ubports-touch.rootfs-xenial-armhf.tar.gz system.img
[sudo] password for hplaptop: 
D: Chosen rootfs is ubports-touch.rootfs-xenial-armhf.tar.gz
D: Chosen android image is system.img
D: Chosen release is ut
D: Compress images before pushing: false

I: Writing rootfs into mountable image
I: Writing android image into mountable image
I: Running post installation tasks
enabling SSH ... [done]
Please enter a new password for the user 'phablet':
Enter new UNIX password: 
Retype new UNIX password: 
passwd: password updated successfully
I: Shrinking images
e2fsck 1.45.7 (28-Jan-2021)
resize2fs 1.45.7 (28-Jan-2021)
Resizing the filesystem on .halium-install-imgs.Nmqlh/system.img to 53956 (4k) blocks.
Begin pass 2 (max = 30486)
Relocating blocks             XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Begin pass 3 (max = 18)
Scanning inode table          XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
The filesystem on .halium-install-imgs.Nmqlh/system.img is now 53956 (4k) blocks long.

I: Unmounting images
I: Pushing rootfs and android image to /data via ADB
I:    Pushing rootfs to /data via ADB
* daemon not running; starting now at tcp:5037
* daemon started successfully
.halium-install-imgs.Nmqlh/rootfs.img:....8 MB/s (3221225472 bytes in 529.009s)
I:    Pushing android image to /data via ADB
.halium-install-imgs.Nmqlh/system.img:... 5.7 MB/s (221003776 bytes in 36.759s)

real	9m28.838s
user	0m0.861s
sys	0m6.186s
I: Cleaning up
umount: .halium-install-rootfs.7Eln7: not mounted.

Then, in TWRP go to Reboot > System.
Done that, now its stuck at a bootloader screen(no Unity8 logo).
What did I do wrong?
Thanks.

Hi all,
I tried the following guide on installing Ubuntu touch on my galaxy s5:
https://github.com/RealTheHexagon/klte-ubports-install-instructions
I believe I have done something wrong as the guide states:
"When booting up, you should see the Unity8 Logo, and soon see the setup wizard."
There is no logo, just a bootloader screen with the 'Samsung Galaxy S5' logo.
So I found this page:
https://docs.ubports.com/en/latest/porting/build_and_boot/Boot_debug.html#what-is-a-successful-boot
I attempted to ssh into the s5 after setting up the ip address however get an error:

ssh: connect to host 10.15.19.82 port 22: No route to host

I'm not sure where to go from here.
Any help is appreciated.
Thanks.