Error when booting: Diskfilter writes not supported

[kpanic]

[member=5059]whateverthing[/member], did you remember to disable the automounter?

'Menu' -> 'Settings' -> 'Removable Drives and Media'
And under "Removable Storage" make sure that every button is unchecked
and then close the settings.

Also, when you create these partitions and file systems, you may as well
do it as root: just command

Code:

sudo su

...in case you are not root already for some reason.

If this does not work, then try:

Code:

umount /dev/sda1 && mkfs.ext4 -t ext4 -m 2 -L root /dev/sda1

If even this does not work, then try:

Code:

umount /dev/sda1 && wipefs -a /dev/sda1 && mkfs.ext4 -t ext4 -m 2 -L root /dev/sda1

Hopefully this helps. Just a few steps left to  do