ianinsane

I tried to install HS Sierra on my E6220 and after several days of unsuccessful attempts, I used Enoch and this guide, which brought me to a succesful installation. However, during step 3) Post-installation fine-tuning, something must have gone wrong, since I've been receiving memory allocation errors on startup since. One thing where I had to deviate from the guide: When it said the /Extra folder was empty aside from the two standard files, also there was no E/E folder. So I copied it from the USB Installer drive to this location and proceeded with the guide. So that happened after I installed Enoch on the new OS X HDD. Don't know if that might have been the problem? I then proceeded to copy all the kexts like it said in the guide, repaired permissions and rebuilt the cache and generated my own CPU-specific SSDT. But when I then tried to reboot I got this error: Right after the bootloader screen exits and OS X would start to load it crushes, without ever showing the Apple logo. The message reads like this: Memory allocation error! Addr: 0x180ffff0, Size: 0x10, File: xml.c, Line: 1176 This is a non recoverable error! System HALTED!!! Do you have any idea where I should start to troubleshoot? Either in the existing installation or - by avoiding the same mistake that led me here - by setting up anew? I already tried all the hardware stuff, swapping the RAM modules, trying with either one of them, cleaning and reseating them...

I'd like to update my E6220 from an excellently working Yosemite to Sierra. But since it's the laptop that I rely on for my daily work, I am super careful. Is there any standard procedure how to backup the system so I can easily restore it if something goes wrong with the Sierra update? I haven't found anything on the forums so far, but maybe I've been looking in the wrong places...

Great!!! This brought me keyboard, trackpad, audio and battery status. No wifi, though. What am I missing?

Well, that explains why it didn't work. Still, in the end I didn't use the Optiplex but the bootpack from the Compatibility chart. So can I try and just replace the Extra folder with the correct one from your guide and install all the kexts with KextWizard?

I used your guide, but I used the Extra folder found on the Compatibility & Bootpacks page. I first tried using the Optiplex 9010 pack. But then trackpad and keyboard didn't work in the installation menu, and external keyboard and mouse didn't work either. So I tried the other bootpack, trackpad and keyboard also didn't work, but the external ones did, so I sticked with it.

I started from the beginning and this time it worked, I still don't know what the problem was. Now I have Yosemite up and running (many many thanks to you guys so far!!!), but keyboard, trackpad, wifi, battery status and sound don't work. Do you have any idea how to fix this?

Or, to speak with your guide: Step 3 / Point 11 never happens. No chameleon boot screen appears. It just takes me back to Step 3 / Point 5.

No, sorry for the misunderstanding. I mixed things up with that last post. I didn't use myHack but this guide. Just this step ("Upon completion, reboot your freshly made Yosemite installation via your USB installer and complete 1st boot system configuration) isn't clear to me. When I reboot I am only able to boot from the stick (OS X Base System). When I try to boot from the installed HDD, it says: "Selected boot device failed." And when I boot from the stick the whole installation process starts over.

Hm...I got this from the installation guide page: 10. At the end of the installation, you will be prompted a few questions if you are using Chameleon boot loader. The installer will ask if you want to use the “Generic Extra†& kexts or if you would like to “Supply your ownâ€. Choose ‘Use My own’ and then point to the Extra folder located at the root of your myHack USB installer. Next, the installer will ask if you want to remove problematic extensions. Answer Yes everytime. 11. Wait for the installation to complete, then reboot when prompted to do so. 12. Remove your USB boot stick and boot directly from HDD if you are using Chameleon otherwise boot from USB again. You would not normally need USB installer anymore, myHack having installed boot loader onto your HDD so that you can boot directly off it. 13. At 1st boot, you will be prompted to finalise your OS X installation (user account, registration, etc.). And this is where it seems is the problem. Step 10 never happens. It just installs without any questions. And when I boot from the HDD it tells me that it's not a bootable drive. When I boot from the stick it takes me again to the start of the installation process (language selection...), no "finalisation of my OS X installation"... Am I having a blond day?

Good that brought me some steps forward. I got to the language selection menu, was able to format my HDD and the OS X installation seemed to complete without complaint. But now I can't boot that installation. When I remove the stick and try to boot, it won't work. When I boot from the stick it always just takes me to the language selection menu / OS X installation. What step am I missing?

Heureka! A13 it is.

I probably should try to update to A13, right?

It's BIOS A08 I just configured the BIOS setting, indeed there were to be made some changes. But still: Memory allocation error. I cleaned the RAM modules, swapped them, tried each of them without the other: Memory allocation error.

Thanks for the new motivation. Still, to no avail... I managed to get a Yosemite installer (10.10.4), used an iMac running EC and your guide above. The creation of the Install Stick worked fine until I tried to boot the E6220 with it. Again: Memory allocation error. I'm going crazy. So I tried different machines to create the stick, different sticks, different OS X versions, different bootpacks, all with the same outcome: Memory allocation error. So the problem seems to be with the E6220, am I wrong?

OK, it's me again. I had another try at this. The first try was to use my SL Hackintosh to create the Chameleon USB installer for ML on my E6220. I always got a memory allocation error, no matter what I tried. Now, second try: I used an iMac running El Capitan to create the Chameleon USB installer (again ML), even used a different stick. But again: memory allocation error. What is going wrong here? The strange thing is, this only happens when I use the E6220 bootpack. When I use the generic one it takes me to the installation menu without memory allocation error. I just can't proceed from there of course, because it doesn't recognize my HDD then.

I did that, and unfortunately it had no effect :-/

You mean swap them?

That did not work either.... still the same error :-/

Many thanks again for the hint. Unfortunately this does not seem to work either. First I tried the suggested pack from your Mavericks guide, deleted the SNB FrameBuffer kext and installed the Extra directory on my ML boot stick. --> Still the same Memory allocation error Then I added the AppleACPIPlatform kext v1.3.6 to the folder --> Still the same error...

Thanks for the quick hint. Now I used MyHack to 1st Create OS X Installer (from OS X Mountain Lion Installation.app) 2nd Install Extra (E6220 bootpack) and 3rd Install Chameleon then I booted the notebook, to no avail. Still the same issue, this time with a different number: Memory allocation error! Addr: 0xdeadbeef, Size 0x0, File: acpi_patcher.c, Line: 926 This is a non recoverable error! System HALTED!!! My stats: Latitude E6220 BIOS A08 i5-2540M 8GB DDR3 Intel HD 3000, 1366x768 Dell DW 1501 WLAN Intel 82579LM Ethernet

Memory allocation error! Addr: 0xdeadbeef, Size 0x0, File: acpi_patcher.c, Line: 893 This is a non recoverable error! System HALTED!!! This is what I eventually got after trying to boot my E6220 with Mountain Lion from a USB installation stick that I created using MyHack. The first time I accidentally created a stick (using this guide: http://www.osxlatitude.com/edp/documentation/pre-installation/)with a generic bootpack because MyHack didn't ask me to choose an Extra folder. When I tried booting, DiskUtility did not show my HDD (Samsung Evo 840 SDD), so I could not progress with partitioning. The second time I manually replaced the extra folder on the stick with the proper Chameleon bootpack found here: http://www.osxlatitude.com/edp/compatibility/but when I booted I got an error similar to the one above. The third time I used an older version of MyHack (3.1.2) and used MyHack's "install extra" feature to load the proper bootpack. When I then booted the notebook the error message on top appeared. Do you have any clues? Thanks a lot! I am completely new at this... Core i5-2540M (I'll update later with the rest of the stats...)