Public bug reported:
I recently installed Ubuntu 16.04.1 Server (amd64) and unrelated to this
issue the installer made some bad assumptions leaving me with a non-
bootable system. I booted the installation media again and selected
"Rescue Mode" and had it drop me to a root shell in my installation. I
proceeded to install a few missing packages and kept getting an error
about posix_openpt() failing due to /dev/pts not being mounted. I did a
simple "mount -t devpts devpts /dev/pts" and all was well. It appears
that /dev/pts is mounted in the live CD environment but not in the
chroot root environment where the root shell is inside the actual
installation.
I'm guessing when the chroot is being setup there's a missing call for
"mount --make-rslave /target/SYSTEM/dev"
** Affects: rescue (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1608290
Title:
rescue mode should mount /dev/pts
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