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TOPIC
This article explains how to transfer information between two computers using Ethernet and File Sharing.
DISCUSSION
Overview
Determine whether your computers have Ethernet built-in, or require an Ethernet card or adapter. The easiest method is to look at the ports on your computer. The Ethernet port, if you have one, is represented by the icon shown in Figure 1:
Figure 1 Ethernet port icon
Ethernet uses different types of cabling. The most common is twisted-pair, commonly referred to as 10Base-T. Some Macintosh computers have built-in support for 10Base-T Ethernet. The presence of an RJ-45 connector, as shown in Figure 1, indicates RJ-45 capability. The connector is similar to a standard phone connector but wider.
Early Power Macintosh and Quadra computers have an Apple Attachment Unit Interface (AAUI) port for Ethernet that requires a transceiver. A transceiver is a small box that adapts the AAUI to the type of cabling used. Some Power Macintosh computers shipped with both an AAUI and RJ-45 port; you can use one or the other, but not both. If your Macintosh has an AAUI Ethernet port, you must use a 10Base-T transceiver, as well as a crossover cable.
Physical Connection
Transferring information between two computers using Ethernet can be accomplished with an Ethernet crossover cable or an Ethernet hub. An Ethernet hub is preferred because it provides the capability to use more than two Ethernet computers or printers, and offers a more reliable connection. If you have more than two computers, you must use a hub.
With an Ethernet hub, you can start up and connect any computer to the network at any time and in any sequence. If you use a crossover cable instead, it may be necessary to start up the two computers in a specific order or to switch from AppleTalk to Ethernet in a specific sequence. See Table 1 for situations that require special attention.
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| iBook to iBook | Close both computers, connect crossover cable, then start up both computers simultaneously. |
| Computer with USB connected to computer without USB | Start up USB-based computer and switch its network connection to Ethernet, then start up non-USB computer and switch its connection to Ethernet. Skip Steps 1-4 below; begin with Step 5. |
| All other computers | Start up in any order; switch to Ethernet simultaneously. |
Note: Crossover cables do not work with Ethernet hubs. For this reason, make sure that any crossover cable is prominently labeled.
For information on the pin assignments for a 10BaseT Ethernet crossover cable, refer to article 30722: " Ethernet: Crossover Cable Pinout ".
Transferring Data
Once the computers are properly connected, follow these steps to set up file sharing and copy files between the two computers:
1. Connect the Ethernet cable between the two computers using the appropriate cable and/or transceiver. If you are using an Ethernet hub, make sure both computers are connected to the hub.
2. On both computers, choose Control Panels from the Apple menu.
3. Open the AppleTalk or Network control panel.
4. Ethernet Hub: Select Ethernet on both computers. Close the window.
Crossover Cable: Select Ethernet on both computers simultaneously, except in the cases noted in the table above. Close the window.
5. On the computer you want to transfer files from, open the File Sharing control panel.
6. Make sure your name is listed in the Owner Name box. A password is not necessary but recommended.
7. In the File sharing section, click Start, then close the window.
8. This step differs depending on the system software you are currently running.
System 7.x:
1. At the Finder, select the hard disk.
2. Choose Sharing from the File menu.
3. Select "Share this item and its contents".
4. Close the Sharing window.
This makes the contents of the hard disk visible to the other computer.
Mac OS 8.x and later:
1. At the Finder, select the hard disk.
2. Choose Get Info from the File menu and choose Sharing from the pop-up menu.
3. Select "Share this item and its contents".
4. Close the Sharing window.
This makes the contents of the hard disk visible to the other computer.
9. On the other computer, open the Chooser.
10. Select AppleShare in the Chooser window, then select the computer to which you want to connect from the list.
11. Once the hard disk from the other computer appears on the desktop, you can copy any or all of the files to your local hard disk.
Troubleshooting
If all the steps have been taken in the personal File Sharing configuration but you cannot see the other Macintosh in the Chooser, there is a quick check you can perform on the Macintosh that is not seeing the other Macintosh. Beginning with Mac OS 8, you can start up a Macintosh from the CD-ROM drive and still retain networking services.
If you can see the other Macintosh in the Chooser after starting up from the disc, restart the Macintosh from the hard disk and proceed with regular extensions troubleshooting. If you cannot see the other Macintosh when the computer is started up from the disc, check that the Ethernet network is configured properly and that File Sharing is enabled on the other Macintosh.