# The "Replace a partition" option **doesn't allow** to select a **boot partition** (which is needed if encryption of the PureOS partition is selected)
# The "Replace a partition" option **in combination with "Encrypt System"** (default) **causes the installation to crash**. The installer terminates during the "Install" phase without displaying any error.
# If a partition to replace is selected first and the password for encryption is typed in after that, **the installer crashes immediately** when comparing the two passwords if they match.
# The "Replace a partition" option **doesn't allow** the user to select an **encrypted swap partition** which was created during a previous "Erase disk" installation.
# The "Replace a partition" option **doesn't allow** the user to select the "Boot loader location" to be on an unencrypted boot partition. Only "Master Boot Record" and "System Partition" are available choices.