Symptoms

1. You created a backup of Mac with Acronis Cyber Protect Home Office;
2. You boot from bootable media, erase system disk and choose Restore data option;
3. After recovering data, you attempt to reinstall macOS. Installation fails.

Cause

After data restore, the system volume gets assigned the Data role and macOS cannot be installed on a volume with this role.

Solution

Perform the following steps via the recovery menu to enable macOS reinstallation over a restored Data volume:

1. From the top menu select Utilities -> Terminal
2. Execute the following command to find an identifier of the restored volume.

   diskutil list

   For example, this line of a command result shows an APFS volume with a name "Macintosh HD - Data" and an identifier "disk3s1".

      1:                APFS Volume Macintosh HD - Data     314.7 GB   disk3s1
3. Type and execute the command below replacing <identifier> with the disk identifier you got in the previous step:

   diskutil ap changeVolumeRole <identifier> clear

4. Quit Terminal.
5. Select "Reinstall macOS" from the recovery menu to install macOS on the restored volume.