Error 109 time machine can be really frustrating as you want to backup your lost data and it doesn't happening. Time machine a backup utility on Mac that can save a copy of your data in an external drive at regular interval. If you have lost any data from your Mac drive you can restore from it. The error 109 time machine is faced when you try to backup your data from time machine and the sparsebundle can not be accessed on the time machine. The sparsebundle is a component that is required to govern the backup process, so the process could not be completed. The error 109 time machine can be fixed by reconnecting the external drive and then try to restart the backup process again. If you are still not able to backup the data you can use the recovery tool that is Mac data recovery software that can scan the Mac drive from where the data was lost. It has the capability of recovering all types of data and they will be shown in the preview. You can select the files that has to be recovered and they will be restored. You don't have to bother about error 109 time machine if you have this software. So download this software now.