The Owncloud version on the NAS - a QNAP TS-459 Pro II running QTS 4.2.2 - is ownCloud 8.0.4 (stable). I downloaded it from QNAP's appcenter (as I don't know enough Linux to do an installation from the command line).
Owncloud version on the laptop (which runs Win7) is Version 2.2.2 (build 6192).
Yesterday I added a few new files to the directory that oc syncs while Windows 10 was running (I have Win7 and 10 running in 2 separate partitions of my SSD). Then I booted into Win 7 again. There, oc showed all the new files as synced (green checkmarks shown in the windows explorer).
The directory that oc observes is on a harddisk that has the same drive letter in Win7 and Win10 (not on that partitioned SSD).
When I opened oc on the QNAP, the new files were not there.
Files added to the directory under Windows should by synced into the NAS.
New files don't show up on the NAS
Client version: 2.2.2 (build 6192).
Client operating system: Windows 7 Professional 64 bit
Operating system: QNAP QTS 4.2.3 (2017/01/21)
Web server: don't know - where / how can I look this up?
Database: don't know - where / how can I look this up?
PHP version: don't know - where / how can I look this up?
ownCloud version (see ownCloud admin page): ownCloud 8.0.4 (stable)
Updated from an older ownCloud or fresh install: don't remember
Special configurations (external storage, external authentication, reverse proxy, server-side-encryption): not that I know
I also found a log file on the server side, but it was too big to enter here - when I tried, I could not create the post. Is there no way to attach a file? It is 392 kB in size.