I am trying to set up a chroot and I ran
sudo qemu-debootstrap --arch=amd64 stretch /srv/chroot/focal-amd64
during the second stage i realized that I wanted focal, not stretch. Copy & paste error.
So I hit ctrl + c and wanted to try again.
sudo rm -rf /srv/chroot/focal-amd64/*
however i get spammed with
rm: cannot remove '/srv/chroot/focal-amd64/proc/[...]': Operation not permitted
I tried setting write permissions to directories with
find -type d | xargs chmod +rwx
with the same errors. No matter what I try to do it seems like I can't delete the folder anymore to try again.
Before, when I let the chroot creation finish, I was able to delete the directory without any problems afterwards, it's only after I interrupted this one that this happens.
As suggested in the comments, this solution might help.
I managed by unplugging the hard drive and putting it into another machine and deleting the folder there without any issues.