![Freefilesync synology](https://cdn2.cdnme.se/5447227/9-3/12_64e61dfbddf2b3652190246e.png)
![freefilesync synology freefilesync synology](http://www.igaidhlig.net/wp-content/uploads/2013/09/Freefilesync06.png)
I can only hope this is a relatively recent problem. (And yes, I painstakingly went through and made sure all folders were checked). Using the generic Drive or Parent folder, as I have been doing for years, it was only copying some folders and not others, partially copying some files in some folders and not copying any file that was not in a folder. To cut to the chase: using individual folders, SyncToy was finding and adding new files as it should.
![freefilesync synology freefilesync synology](https://windowsedition.com/wp-content/uploads/2019/12/Create-Synchronicity.png)
It came up as both Drives being synched, even though I had just added a couple hundred files to L! I then ran many different tests, folder by folder, trying all sorts of scenarios. Today, after running D to L, I accidentally ran the L&M synch before the D to M. I've done this for so long I rarely pay much attention as I go through the process. So: D to L and D to M then run Synchronize to make sure both have the same files. I use the Echo option which is supposed to be an incremental backup, meaning any changes that have occurred on D will be reflected on the two external drives. Every so often I then use SyncToy to backup my D Drive to two different external drives. Using Macrium I do an incremental backup up every day and a full back up once a week. Without going into details, I keep 3 years worth of photos and documents on my D Drive. Today I noticed that something didn't look right. However, for those who are still using SyncToy, this is a warning. I like it because it doesn't require proprietary software to access my files. But I've been using it since version one and it seemed to be OK.
![freefilesync synology freefilesync synology](http://lh3.ggpht.com/-mhzqJ0jz6Xg/UDysURoR4GI/AAAAAAAABZU/N6Nv7XbswuM/Freefilesync-54.jpg)
I guess I shouldn't be shocked as SyncToy is really old.
![Freefilesync synology](https://cdn2.cdnme.se/5447227/9-3/12_64e61dfbddf2b3652190246e.png)