How to merge folders in high sierra

You could try this, it is for Sierra, but should work

macOS Sierra: Organize files in folders

Merge two folders with the same name

If you have two folders with identical names at two different locations, you can merge them into a single folder.

Press and hold the Option key, then drag one folder to the location that contains a folder with the same name. In the dialog that appears, click Merge.The Merge option appears only if one of the folders contains items that are not in the other folder. If the folders contain different versions of identically named files, the only options are Stop or Replace.

The trick is to drop the folder into the LOCATION where the other folder is while holding the option key.

Edit, although that may not be helpful if you have identical files in both folders.

Also, see

The Many Ways to Merge Folders on the Mac | Other World Computing Blog

I am on 10.13.6 (17G65)

I created two folders in two different locations

both called TEST

placed five files in one TEST folder

placed eight files in the other TEST folder, some with some same name, some with new names

then using option key, select TEST and place it in same LOCATION where the new folder is

(do not drop it on top of the duplicate TEST folder).

See pix

AFTER MERGE

Jayakumar.B wrote:

Not working in my MacBook AIr with 10.13.6

Is there another way

Did you hold down the OPTION key?

I ask because the Merge option does not appear if you just drag. It does appear if you option-drag.

So, just to reiterate, everything is working for me exactly as Sparkleberry described.

I'm on 10.13.6, in case you are wondering.

It is finicky.

For example, you cannot create two folders (same name) and dump identical files in each or just change the names of some of the files in one of the two folders. Different versions of identically named file won't work either.

I'm using Sierra 10.13.6. It does not work for me. It just replace without merging.

Not working in my MacBook AIr with 10.13.6

Is there another way

Mmmmm, well I managed to get 'Merge' to show just once, but every other time I just get the 2 options Stop or Replace. Doing absolutely what you have described and illustrated.

Hi, Jaykumar, Not that I know of.

It is not as easy as it looks if you miss a step. You have to have two folders with the same name in two different locations and one of the folders has to have items that are not in the other folder.

Create two folders in two different locations.

call folder each TEST

put the same two files in each folder

add one new file to the first folder

then using option key, select TEST and place it in same LOCATION where the new folder is

do not drag the TEST folder on top of the duplicate TEST folder,

instead, drag the TEST folder into the new location where the other TEST folder is.

See earlier pictures

Press and hold the Option key, then drag one folder to the location that contains a folder with the same name. In the dialog that appears, click Merge.The Merge option appears only if one of the folders contains items that are not in the other folder. If the folders contain different versions of identically named files, the only options are Stop or Replace.

See gif animation. I created two folders on my desktop to represent two locations

created a TEST folder in each. I put nine files in one folder, five in the other. Click on the flic

Note that Finder has habit of not updating item contents, so ignore fact it shows five items, it has the correct count of 11 after the merge.