Hello everyone. I decided to make tutorial for all those e520 users out there. "vmarsh" has a guide out there on inanelymac.com too which takes advantage of the Raid On setting in the BIOS. Mine will be using ATA as it seems to be the only way to get it working on my computer at least. Basically, if you want retail, you're in the right place. If you want to boot with a distro, go check out "vmarsh's" guide.
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On to the guide...

Part 1:
If you already installed, skip to part 2.

1. Download this DMG image from here http://www.mediafire.com/?j1dxjoi91lv. It can be burned with Poweriso or another burner which supports DMG.

2. Once burned, reboot. Press F2 when you see the dell screen. You will enter the BIOS. Go check your Sata settings and make sure its on Auto detect/ATA.

3. Boot from the CD/DVD by pressing F12 or changing your boot order in the BIOS. When it tells you to enter the number of the DVD drive, insert the leopard disc and type the correct number. (Usually the number in brackets)

4. If all goes well, you'll boot up. (If all does not go well, boot with -f -v and then make sure your SATA Setting in the bios is on Auto Detect) Enter disk utility and format the partition as HFS+, also known as Mac OS Extended, Journaled. (You're using a GPT partition table right??)

5. Once you format/configure your disks, exit disc utility and continue the install. Select the Printer drivers you want/need and if you want X11 or extra fonts/languages or whatever other crap they offer.

6. Anyways, the install finishes. Your computer reboots. Once you reboot, boot into the Boot-132 CD/DVD again like you did in step 3, except this time, type the number of your hard drive which has the OS X partition on it. (Usually 80, 81 or 82)

7. Once the darwin boot loader loads, type -v. If you get stuck in the setup loop, type -v "graphics Mode"="640x480x32" (I have noticed that the setup loop is fixed on 10.5.6. I cannot speak for any other version.)

8. Go onto step 2.


Part 2:
This will allow you to keep your main boot partition vanilla/retail by avoiding putting hacked drivers on it. We do this by running a script which keeps these files along with a modified boot loader on a separate partition.

1. Download this ZIP file from here http://www.mediafire.com/download.php?fztmnzzhnim and unzip the ORANGE files and folders to your home folder. DELETE THE DSDT.AML FILE!

2. Open a terminal window.

3, Type "sudo -s"

4. Enter your password, then drag Make-EFI-Boot-Now-v3.sh into the terminal window. Press ENTER.

5. Let the script run, following the on screen instructions. Once this finishes, download this audio driver (and optional, time machine/UUID error 35 fix) http://www.mediafire.com/download.php?ydmj4y5nite and this app http://code.google.com/p/osx86tools/

6. Open osx86 tools and select "Add EFI Strings/Boot Flag"

7. Click GFX Strings at the top

8. Select your card from the drop down list. Copy the string of text that appeared in the lower text box of the window. Open up the orange plist folder and edit com.apple.Boot.plist with text edit. Replace the words "GRAPHICS STRING HERE" with your string buy pasting it in.

9. If it asks you to restart, ignore it. Now unzip the AppleHDA.kext file. In osx86 tools, click Install kexts. Select the AppleHDA.kext (and optional IONetworkingFamily.kext) and follow the instructions, when asked to reboot, do so. Click ok if it tells you boot caches will be updated.

hi,friend.......I can't download the all the files you give except the osX86 tools,could you help me?thanks.