storage upgrade on macbook pro mid 2014
what ssd should be used and how can we update the storage without loosing any data
MacBook Pro 13″, macOS 10.15
You also want to make sure you are already using macOS 10.13+ before installing a new third party NVMe SSD since the laptop's system firmware needs updated before you can use a third party NVMe SSD.
As @muguy mentions you want to make sure to have a good backup before you do anything else in case something goes wrong even if you are "just" upgrading macOS.
