For example, the installer will disable most of the input managers, kernel, mail plug-in extensions and system hacks are incompatible with Snow Leopard or still known as a cause.
Some of these items, such as input managers and contextual menu plug-ins, are still in place but not loaded because Snow Leopard does not support the mechanism that helps them work. However, other components such as kernel compatibility that are not compatible will be positively located. If you install any such item, you will see a dialog box at the end of Snow Leopard installation, informing you of that fact. This dialog box will notify you that these files have been moved to a new folder called Incompatible Software at the root of your hard drive.
You will lose the functionality provided by these add-ons until developers have offered to upgrade them to be compatible with Snow Leopard. How does the installer know what files need to be transferred? In this regard, the installer has a built-in list of incompatible software, and if you have an Internet connection, the installer can check Apple's servers to update this list in Installation process. The Snow Leopard installer is also smarter during interruptions.
If your Mac loses power or if an installation is interrupted, you can continue without worrying as the installation will find the right place where it is interrupted to continue. For many people who own the MacBook Air, this means that Snow Leopard allows them to use the Remote Disc feature for the first time, an Apple technology for installing software on Mac with their optical drive.
Here's how to do it:. First, make sure both machines are active, turn on the device and connect to your local network. If the host computer is running OS X Next, on the computer on which you are installing Leopard, open a new Finder window and select Remote Disk in the sidebar; The computer sharing the disc will appear on the right. From here, the installation process will perform as described above, albeit slower: installing Snow Leopard in MacBook Air from a Mac Mini on If the new installer is good, why do you want to delete the previous drive - a process equivalent to the old Erase and Install option?
This, by the way, is a very cool Mac feature that -- at least to the best of my knowledge -- Windows doesn't have. If you hold down the T key, the new Mac will boot up and display the Firewire logo on its screen. It will not boot into a GUI. By the way, did you ever notice how similar the Firewire logo is to the radiation warning triform?
Neither did I, until I started this little project:. Anyway, now that your new Mac is booted up and in target mode, boot up your old Mac. I left the Firewire cable out of the old Mac, and just booted it up. Once the old Mac was booted, then I plugged in the Firewire cable, and the old Mac suddenly had the new Mac's drives on its desktop, just like any other external drives.
The astute reader might have noticed I used the word drives plural. I'm doing video and the two faster drives will be a big help.
The two-drive configuration makes this a much easier install. I merely installed Snow Leopard on one drive and left Lion on the other. If you only have one Lion drive, you may be able to partition it, and install Snow Leopard on the other partition, but that's a theory, only.
I haven't tested it. To make things easier, once I'd booted up on the old Mac and saw the hard drives from the new Mac on the desktop, I renamed the drives. The Lion boot drive was renamed to "Lion Server". The drive that would hold the back-rev Snow Leopard was renamed, creatively, "Snow Leopard". Put this somewhere you can find it on your old Mac's desktop. Finally, make sure your old Mac has a DVD drive.
If it doesn't, go find an external USB drive and use that. I'm guessing you could run the Leopard installer from an image or a USB key, but that's also something I didn't try. Next: Running the install ». Now you're ready to run the installer. The Snow Leopard installer will ask you where you want to install Snow Leopard.
Here's where you want to be careful, and select your previously renamed "Snow Leopard" destination drive remember, this is really the drive on the new Lion machine. Click next and let the install proceed. It took about forty minutes on my vintage iMac. Once that's done, run the Combo update. It'll look like the Combo update is starting to update your old Mac, but that's just a fancy splash screen.
Wait until the splash graphics run out of steam, and once again select your "Snow Leopard" drive living on your new Lion machine as the destination. This took about 20 minutes. Once this process is all done, shut down your old Mac and unplug the Firewire cable. You'll have to hold down the power button on your new Mac and let it shut down as well. Press the power button on your new Lion-based Mac and hold down the Option key.
If the hosting computer is running OS X From this point, the installation should proceed as described above, albeit more slowly: installing Snow Leopard onto a MacBook Air from a Mac Mini over an If the new installer is so good, why would you want to erase your drive first—a process equivalent to the old Erase and Install option? The most obvious reason is if the standard installation procedure produced problems; an Erase and Install, followed by a restoration of your data from backup, could solve those problems.
You might also want to consider this approach if your Mac has been acting buggy under Leopard and you suspect you may have some hard-drive or directory corruption; erasing the drive before installing Snow Leopard could fix such problems. Under Leopard and earlier installers, using Erase and Install and then restoring your data using Migration Assistant would often fail to transfer over all your data; specifically, some settings and add-ons would be left behind.
Similarly, as with every version of Mac OS X, Snow Leopard does not require activation or a registration code; Apple continues to rely on the honor system. Just be sure to perform a full backup beforehand; as long as you have that, you should be set. PowerPC is a stiff, bereft of life. It rests in peace. It's rung down the curtain and joined the choir invisible. But not installing Rosetta by default? That seems a little harsh, even foolhardy.
What's going to happen when all those users upgrade to Snow Leopard and then double-click what they've probably long since forgotten is a PowerPC application? Perhaps surprisingly, this is what happens:. Instead, Snow Leopard reached out over the network, pulled down Rosetta from an Apple server, and installed it. No reboot was required, and Disk Inventory X launched successfully after the Rosetta installation completed.
Mac OS X has not historically made much use of the install-on-demand approach to system software components, but the facility used to install Rosetta appears quite robust. Snow Leopard uses the same facility to download and install printer drivers on demand, saving another trip to the installer DVD.
I hope this technique gains even wider use in the future. Rosetta aside, Snow Leopard simply puts fewer bits on your disk. Apple claims it "takes up less than half the disk space of the previous version," and that's no lie. A clean, default install including fully-generated Spotlight indexes is Incidentally, these numbers are both powers-of-two measurements; see sidebar.
Snow Leopard has another trick up its sleeve when it comes to disk usage. The Snow Leopard Finder considers 1 GB to be equal to 10 9 1,,, bytes, whereas the Leopard Finder—and, it should be noted, every version of the Finder before it—equates 1 GB to 2 30 1,,, bytes.
This has the effect of making your hard disk suddenly appear larger after installing Snow Leopard. For example, my "1 TB" hard drive shows up in the Leopard Finder as having a capacity of In Snow Leopard , it's As you might have guessed, hard disk manufacturers use the powers-of-ten system. It's all quite a mess , really. Though I come down pretty firmly on the powers-of-two side of the fence, I can't blame Apple too much for wanting to match up nicely with the long-established but still dumb, mind you hard disk vendors' capacity measurement standard.
Snow Leopard has several weight loss secrets. Now cross half of those architectures off the list. Of course, not all the files in the operating system are executables.
There are data files, images, audio files, even a little video. But most of those non-executable files have one thing in common: they're usually stored in compressed file formats. In Snow Leopard, other kinds of files climb on board the compression bandwagon.
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