Translations:Add a Storage Partition & Modify your System to Suit/7/en

Manipulating the Partitions

Working with partitions

Modifying an existing partition table may cause loss of data. Always ensure adequate backup to external storage

Boot Manjaro from a live ISO and use Gparted to delete /swap & to modify the size of all (bar /boot) of the partitions on the 1TB (931.51GB formatted) drive. I had to, delete, shrink, move, expand, create (reboot & move my personal data across from /home to the new /bdata , then reboot GParted) shrink, expand.