Mac Copy / Paste folders on NAS, SMB (NTFS) the operation can’t be completed because an unexpected error occurred (error code -50)

Named streams are used to store Mac OS X extended attributes and can be leveraged to avoid using AppleDoublefiles to store the data fork and the resource fork of legacy Mac files.

Mac OS X Server v10.5 and v10.6, as well as many Network Attached Storage (NAS) devices, support named streams when you connect to them via SMB.

Microsoft Windows servers with NTFS-formatted hard drives also support named streams when you connect to them via SMB; named streams are called “Alternate Data Streams” in Windows.

Mac OS X v10.5 and v10.6 clients automatically enable named streams support when they have a SMB connection to a Mac OS X Server v10.5 or v10.6-based server.

Mac OS X v10.6 clients automatically enable named streams over SMB when the NAS or Windows server claims to support it.  See below for details about how to activate Mac OS X v10.5 client support of named streams over SMB connections to a NAS or Windows server.
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Show hidden files Mac OS X 10.7 Lion and 10.8 Mountain Lion

To enable hidden files/folders in finder windows:

Open Finder
Open the Utilities folder
Open a terminal window
Copy and paste the following line in:

defaults write com.apple.Finder AppleShowAllFiles YES

Press return
Now hold ‘alt’ on the keyboard and right click on the Finder icon
Click on Relaunch
You should find you will now be able to see any hidden files or folders. One you are done, perform the steps above however, replace the terminal command in step 4 with:

defaults write com.apple.Finder AppleShowAllFiles NO


Mountain Lion and Scrollbars

OS X Mountain Lion changed not only how scrolling works, but if and when scroll bars appear. The issue of natural vs. unnatural scrolling is one that can be successfully argued by either side; in other words, I think it’s a toss-up. But the issue of scroll bars not appearing, or only appearing if you are in the process of scrolling, is a user interface mistake on Apple’s part. Apple may have gone a little too far in its zeal to bring all things iOS to the Mac OS.

You don’t have to live with Mountain Lion’s scroll bar defaults; you can change them to meet your needs or preferences.
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