Partitions that are disappeared all of a sudden, deleted unintentionally or unmounted from the macOS disk upshots in a huge amount of data loss.
Apart from deletion, macOS partitions may also go missing or become inaccessible due to several reasons like fatal disk error, partition table error, file or directory corruption, incorrect file system, failed software update, incorrect usage of terminal command, incomplete disk formatting/disk erase process, improper handling of disk utility to manage partitions, partition map corruption, human errors etc.
Whatever might be the cause but once a partition got deleted or went missing from macOS disk, it means no data on your macOS. All the files present inside the partitions go lost or invisible.
But, no need to worry as you can easily recover deleted or lost macOS partition with the help of Remo Partition Recovery now.
Note: Connect the Mac disk from which you want to recover the deleted partition to a working Mac machine. Then, download and install the Remo Recover software on that Mac system.
Step 1: Launch the tool and select Recover Volumes/Drives option on the main screen.
Step 2: Next, choose Volumes Recovery option.
Step 3: Pick the connected disk from the list of displayed drives and choose Mark All option.
Step 4: Once the recovery process gets completed, a list of recovered partition data will be shown.
Step 5: Save the scanned data and if, you are satisfied with the result then activate the software.