Introduction: NEW Leapard 10.5.6! on Your PC!

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This is a very detialed step by step guide for installing real Leapard (10.5.6) on your PC. VIDEO COMING SOON.
This is a set of guidelines for installing OS X Leopard onto a PC. What you choose to do with this information is up to you, and I am in no way responsible for whatever happens to your machine.


For everyone having worried about their hardware setup, there is a website that lists hardware components and whole computer systems:

For computer rigs:

For individual components:

Granted the above lists are for 10.5.2 and now 10.5.5, but for the most part the same rules should apply with patches and compatibility.

you should be aware of if you are doing this for the first time. The first one is that you should NEVER use the Apple updater to update your installation of Leopard. For instance, if the Apple updater pops up and says that you can update from 10.5.5 to 10.5.6 DO NOT UPGRADE UNDER ANY CIRCUMSTANCES!!! It will brick your machine and you will need to re-install Leopard again.

Step 2: Step 2 - WHAT YOU NEED

The things you need for this project are as follows:

High Speed Internet Connection (Useful if you want the disk image before the end of time)
Blank DVD-R (or two, I'll get to that later)

Nero, or some other program that allows the burning of disk images to blank media
A BitTorrent program such as BitComet or Transmission

A computer with the following attributes:
Processor with either SSE2, SSE3, or SSE2/3 capabilities.
at least 512 MB RAM
at least 9 GB of free disk space
A DVD drive for installation

Once all of the essentials are taken care of, we can get to the nitty gritty. In my personal opinion, this is one of the easiest installations of any operating system that I have ever had experience with. If all of your devices are supported, and your system has reasonable specs, you may expect to be cruising on your new Leopard in under and hour and a half. If you have just the bare minimum system requirements, it may take considerably longer.

Step 3: Step 3 - PREPARATIONS


Now, for the two practical options you need to download the Leopard distribution. The latest one out on the internet is from a development team named iDeneb. They have the latest Leopard release - 10.5.5, so go to a popular torrent site (I cannot link or suggest one for legal reasons) and if you happen to type in something similar to "iDeneb 10.5.5" you might happen to find what you need. Unless you have a crazy good connection, expect to wait at least half a day for the whole thing to download. It is a large file and will take a considerable time to acquire.

Then you need to burn the .iso file to the blank DVD. I like to use a free program called ImgBurn. You can download it here


If youve never booted from a CD or DVD on your system, then follow the outlined steps. If you already know how then just skip the next paragraph.

Insert the dvd into your dvd drive and shutdown the computer. Then whenever the computer boots up, pay attention to if it says anything about boot sequence or BIOS setup in the first few seconds of booting. For most Dell systems that Ive come across the Boot Sequence option can be reached by hitting F12 at startup. For HP it is usually F2. Other BIOSs might be Del or any of the F keys. Then select your CD/DVD drive, and the computer will boot from it after hitting enter.

And now the possible difficulties begin. If you wait a while and let the DVD boot up, it will eventually say something like "Press any key to begin or F8 for options . . ." (I know it isn't exactly that, but it is similar), if you press any key the next screen pops up:
Now, if your CD/DVD drive is still spinning at this point and the light is working, than chances are you are perfectly fine, nothing to worry about. But unfortunately with this particular distribution of OSX86, there are some issues with older hardware. You will need to go through a lengthy process in order to get back on the right track to install Leopard. From what I've seen the problem mostly involves NVidia chipsets, but it could be other hardware that causes its malfunction as well. Here is the website that has the patch, you may be able to find instructions as to how it is used as well. (It involves messing with the .iso file that you downloaded earlier, and you will need some basic knowledge of the Windows command line or Linux Terminal)
The Patch website:

Remember when i said in the materials needed section that you may need 2 blank DVD-R's? It's because if you have this problem you will need to burn the patched .iso to a new disk in order to use it.
The link shown above is part of the iDeneb website. If you have further problems with this particular distro, consult that website and the forums at InsanelyMac.

(Also, when first booting the DVD at the part where it prompts with "press any key . . ." press F8 and then -v in order to boot in diagnostic mode. This may be useful for troubleshooting)


Back to the ideal installation case, these failures are depressing!

A gray screen will load with a cursor or colorful pinwheel in the upper left corner. Then a Blue iDeneb screen will appear

Step 6: Step 6 - LANGUAGE

Then the language selection screen will appear (English for this instructable)

Step 7: Step 7 - FORMATING

You should now see a welcome screen. Dont click continue yet. Now it gets more complicated. You need to format the hard drive at this point in the installation. To do this, go to the Utilities button on the upper OS X bar as pictured below. Then go to Disk Utilities.
The disk utility will come up. Click on your hard drive (Not any partitions you may have, see below - its in the right hand column) and then click the erase tab:

Click on the Volume Format drop down menu. I always use Mac OS Extended Journaled. You may be able to use another type, but I know for a fact that that does indeed work. Then name the partition whatever you would like, I'm partial to something plain like Leopard.

Once that is accomplished (It may take some time depending on your hard drive size and system configuration) click the red x button to exit the Disk Utility and return to the installation Welcome screen and then click continue.

NOTE: Make sure there is a partition on the left hand side that says "Leopard" (Or whatever you named it). If there is not then go to the Partition tab, select 1 partition, and partition the hard drive properly.


Then the screen in the picture will appear. Click agree to continue. Then the "Select a Destination" screen will come up telling you where you can install Leopard. It should show the partition and hard drive you just formated. If it does not then something went wrong in the formating process, but don't worry, you can still go to the Disk Utility and try it again. (Please note that in this photo an external hard drive icon is used, unless you are installing on an external drive, a hard drive icon should appear). Click install.

Step 9: Step 9 - INSTALL SUMMARY

After you click install the "Install Summary" page should show up. VERY IMPORTANT!!!!!

You MUST Click Customize!! If you do not, your install probably will not work. The Customize screen will show you several options that you will need to select or de-select based on your own hardware configuration. If your first install does not work correctly, chances are you need to choose different options in the After you finished customizing click done and return to the installation summary page.

Step 10: Step 10 - CHECKING DVD

The installer will now check the disk. If you are feeling particularly daring you can skip this process. However, I recommend going through the process at least once. There may have been an error in burning the disk, or the .iso file itself may have been slightly corrupted. As long as the disk hasn't been scratched, you really only need to check the disk once if you need to install Leopard again.


Once the installation is complete a green circle with a checkmark comes up saying that the Installation was successful. You will need to restart the computer (I think it may do it automatically if you are not around) and after it goes through the Darwin Bootloader, another Apple loading screen appears:

Step 12: Step 12 - ALMOST DONE

Now all you need to do is set up the Leopard Basics..Guess what. Then your done!! - that is if all of your hardware is supported. If it is not, I suggest checking out these sources:

If you have any questions or comments, please post a comment or email me at Also alot of your problems can be solved by just searching them on google. Thanks for your intrest dot forget to rate and subscribe.


Simply upgrade to 10.5.6. Make sure to only download the update not the combo update, using the upgrade software on your new mac!