what version of mac oss is on a time machine backup

BackupName.ext is often Backups.backupdb

Follow these steps you can find out the "TIME MACHINE WHAT VERSION OF MAC OSS IS ON A PARTICULAR BACKUP"

• Locate your Disk where backup is stored and look for a folder (BackupName.ext is often Backups.backupdb)

• Once you locate your Backup Folder and the latest backup or the backup for which you want to find the version number. Look for System > Library > CoreServices and expand

• Look for SystemVersion.plist  and open it with XCode or any good Text Editor. I used Open Files downloaded from App Store

• Click on Open Files App (You may use any app you find suitable)

• Drag the files on to the app

• Click on Test and there you go. !

Here you Go!