iCloud Drive
Dec 29, 2008 While HP's MediaSmart servers are based on Microsoft Windows Home Server, the growing prevalence of households containing both a PC and a Mac has led to increased demand for home server systems.
When you store files in iCloud Drive, you can share them with Mac computers, iOS devices, and Windows PCs. Learn about iCloud Drive.
External storage device
With an external storage device, such as a hard drive or USB flash drive, you can transfer even large amounts of data from one computer to another. Just drag files to the storage device, then plug it into the other computer and copy them from there.
AirDrop
With AirDrop, you can send files wirelessly between Apple devices that are within about 30 feet (9 meters) of each other. Learn about AirDrop.
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Target disk mode
Use target disk mode and the appropriate cable to make one Mac computer work like an external storage device for another connected Mac. Learn about target disk mode.
File Sharing
When you set up File Sharing on a Mac, other computers on the same network can connect to it, and you control which folders to share. Learn about File Sharing.
Email or chat
Use the Mail app to send files as an email attachment. If the attachment is too large to send as a regular attachment, the Mail Drop feature automatically uploads the attachment to iCloud so that the recipient can easily download it.
You also can also use the Messages app to send small files: just drag the file into your message.
A simple solution to a complex problem. Great!! Thanks tych0!

HOWEVER, there are some SERIOUS caveats here that may have 'severe' consequences. The GlobalPreferences have a lot of random stuff in there, so it's important to know what this is. Here's an (incomplete) list of what the GlobalPreferences holds, and you may or may not be effected by these.
The Default System Font.
Mouse and Trackpad 'Scaling' - sensitivity / speed.
Trackpad tap-to-click.

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Scrollbar Arrows - two arrows at top of scroll bar? One arrow at top/bottom? etc.
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Font size at which Smoothing gets applied. For example, I have this set to 128 (points) because I'm basically DISABLING font smoothing.
Selection highlight color.
The list of recent folders, appearing in the Apple Menu.
Favorites for font styles.
Favorites for colors, including styles and colors you've saved in the grid at the bottom of the Colors dialog.
That's only a partial list, but if you have any such settings it may be better to lonly delete the appletalk preferences. They are actually indented and begin with the following in the .Globalpreferences.plist:
Just open the .GlobalPreferences.plist with your fave editor, and have at it.
-Pie---
-Pie