FreeFileSync Forum

> RTS monitors the specified directories ...

More correctly:
RTS does not monitor specified directories, but instructs the OS to do so.

But given TS's reaction, it seems she/he (still?) did not to read the RTS Manual page.

In your post, you use the drive letter D for both your USB drives. I will assume the 2nd one is named E:\ instead of D:\. Also note you use forward slashes (/) instead of backslashes (\), which is strange when using drive-letters. It seems you should specify your left base location as D:\Folder1\Cus...

> ... I performed a file content comparison today, which checks the hashes of the files on both drives. FreeFileSync (FFS) does not use hashes . A compare by content simply compares the entire content (bit-by-bit) between a left- and right-side file. The reason why FFS does not use hashes/checksums ...

RealTimeSync (RTS) does not compare directories.
The RTS Manual page explains how RTS works.
The default value of 10 seconds you refer to is the Idle time.

That is the reason why FFS has a manual page (see the link above) on the topic.

Because you can copy OK in File Explorer to your NAS, it seems you are running a *.ffs_batch sync job launched by the Task Scheduler or by RTS which is in turn launched by the Task Scheduler. Note that tasks launched by Task Scheduler by default run as the System user, which almost certainly has no ...

Why duplicate features in FreeFileSync or RealTimeSync that are already built into Windows: the Autostart folder and the TaskScheduler.

There are many ways to skin a cat. Act as proposed by xCSxXenon: Use the Update Sync variant instead of the Mirror variant Or: use the Include Filter to specify the folders that need to be included in the sync. Not included files and folders are not affected by a sync. Or: Use multiple left-right fo...

In your second picture, the Mirror sync has become a Custom sync in which for the Difference Category "Item exists right-side only" the Action is now set to "Do nothing" (as opposed to the "Delete right item" Action for a Mirror sync). (The FFS GUI will show description...

> To keep the data at destination folder after source folder data was deleted, is there any way to do that? A Mirror sync will delete anything form the destination (right-side) that does not or no longer exist on the source (left-side). An Update sync will leave anything in the destination (right-si...

Based on the fact that only D-drive folders are involved in your sync, it seems you would get the error reported in the topic title during updating the installation of FreeFileSync (FFS), and not while running a FFS sync . And that you mistyped the location "C:\Program Files\FreeFreeSybc\H"...

@palmlart
If the warning you get relates to the RecycleBin not being available for your SD card, you can change your Delete and Overwrite setting from RecycleBin to Permanent for that sync.

ad 1) Was this ever a problem? You wrote/showed that FFS wants to update files that (in your perception) had not changed. I don't think you wrote that FFS does not sync files that had changed. ad 2) I expect this issue to be resolved by eliminating the overlap between Source and Target. Can you conf...

1) Don't know. No experience with that 2) In theory no, but I have seen reports that a total path length over 255 characters caused problems. No clue if any of that is OS or file system related. 3) Don't know. No experience with that 4) That should affect just how date and time are displayed; not ho...

It seems the user under which credentials you run this FFS sync does not have write access in "C:\Program Files".

@doc_farras
It is presently not possible to do this automatically in FFS. And I don't expect this anytime soon in the future, because it is not really a synchronization related action.

What is the file-name (or -extension)?
Perhaps the file is in the FFS default Exclude Filter list, because there is normally no need to sync such files.
Or perhaps it is a FFS (system) file (e.g. a *.ffs_db file), that should not be synced in the first place.

For files shown in your picture (some of the 78 files that FFS intends to update left=>right) it seems the size is identical left vs right. So, file size does not seem to be reason for a renewed sync. You could check the file dates left-vs-right of some of these files. Perhaps iCloud modifies the fi...

In your local attempt, you apparently sync C:\Users with some other location. Be aware, that users, and (as far as I know) even users with administrator-rights, do by default not have write access to C:\Users ; only to C:\Users\[UserA] , where [UserA] is the home folder of the logged-in user. If you...

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You are mixing up two things: • Locking folders involved in the sync by sync.ffs_lock files, as configured via the LockDirectoriesDuringSync flag and described in the Expert Settings . • The use of a database for TwoWay syncs and for detecting moved, renamed and deleted files; as stored in sync.ffs_...

I only wrote "it is not realistic to assume ...". Nowhere do I write that YOU assume anything, despite your false claim to the contrary. So, I did not misrepresent what you wrote and I ask you, kindly and directly, to never engage in such untoward conduct in the future. Despite that, I won...

> May I recommend ...

You are allowed to recommend anything you like.
But it is not realistic to assume Zenju will add FAQ items in support of unofficial distributions of his software, that are possibly even in conflict with the distribution conditions.

I don't know Gdrive in detail, but several cloud storage services retain previous versions of any files that get updated. And obviously, FFS updates the Gdrive-side *.ffs_db file ate the end of each sync.

FFS only creates a single *.ffs_db file in (each of your) left and right base location(s). Because the *.ffs_db files are unique per base location, FFS does not sync its *.ffs_db files . To the extent that *ffs_db files do get synced, it must be due to Gdrive, not FFS. It seems Gdrive used to have t...

If you are not happy with the default settings (when defining a sync configuration via "New" ), you can always define a sync configuration according to your own preference and save that as e.g. MyTemplate.ffs_gui. Instead of creating a new sync configuration via "New", you now op...

The only other option is to backup certain file types to disk 1, other certain file types to disk 2 and all remaining file types to disk 3. As an example: All Word, Excel and PDF files to disk 1, all pictures and movies to disk 2, and all other file types to disk 3. In line with the example, you can...

Hoovering your mouse over any of the six Action-icons may also help.

It sounds like that, after an initial transfer of your data to your new disk, you want to backup part of the data on your new disk to a first 1st disk, another part of the data on your new disk to a 2nd old disk, and yet another part of the data on your new disk to a 3rd old disk. Although it is pos...