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[Guide] Single and Dual Boot (with windows 7) Installation of Mac OS X Lion (with 10.7.5 Update) on Acer Aspire 5755G

Dual Boot windows 7 Mac OS X Lion Acer Aspire 5755G 10.7.5 Update

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Hi to all Acer Guys,

My experience with the Acer Aspire 5755G (Stock UK Model) and Mac OS X Lion Installation (up to 10.7.5) using Uni-Beast has been challenging and exciting. However you may have followed other methods posted on different posts to have a first Mac OS X Lion installation on your laptop. But this one worked for me, so it's time to share it. :trumpet:

Requisites (what you'll need):

- Running Mac OS X Lion installation.
- Purchased Mac OS X Lion Install App.
- 8Gb USB Flash Drive.
- USB keyboard.
- Wired Internet connection.


Uni-Beast Method:

Create Mac OS X Lion installation USB Flash drive…

1.For fresh installations on empty hard disk follow steps 1-2 from this link
http://tonymacx86.blogspot.co.uk/2011/10/unibeast-install-mac-os-x-lion-using.html

2. For dual-boot installations on hard disk with already windows installed then follow this link
http://www.macbreake...-partition.html

Note: Do not use ###### at any instance in this entire guide.

Installation:

1. Using your current Lion setup and the USB dongle, make a Uni-Beast install (http://tonymacx86.bl... ... using.html). Leave the USB plugged. Name the USB Volume "DONGLE", for instance.

2. Copy and unzip the Acer5755g kext pack (download from attachments) to a temporary folder (named it TEMP) on the root of the USB dongle. You'll have a folder structure like /TEMP/Extra and /TEMP/SLE. Safely extract the USB drive.

3. Plug the dongle in your ACER. Fire it up, press F2 to enter the bios and make sure you're using the integrated video card (Intel). Otherwise the installation will also proceed but you'll have problems like NVidia checking time outs. You may also check the bios to see if the option to select the boot source is selected. After that, boot using your USB drive.

4. Choose your language, accept the License, enter the Disk Utility and format your partition any size you like, Mac OS Extended (Journaled). In my case I made two partitions: One for the OS (named it "OSXVOL"), the other for Time Machine Back up (please read note below) in order to have a quick rollback during this process.


Note: If you’re doing dual-boot installations with windows then make sure you have enough primary partitions, as windows restrict you to make more than limited (3 or 4) primary partitions. So for this reason I always recommend to use external drives for time machine backups.

5. Install Mac OS X Lion. When it finishes, leave the USB dongle plugged and reboot.


6. Press F12, select boot from USB. Again boot from the DONGLE partition again, as if a new install. Select the language then accept the license.

7. Run the Terminal app, copy the contents of the kext pack to the Mac OS X Lion Volume. But first create the /Extra folder.

# mkdir /Volumes/OSXVOL/Extra
# cp -R /Volumes/DONGLE/TEMP/Extra/* /Volumes/OSXVOL/Extra
# cp -R /Volumes/DONGLE/TEMP/S:L:E/* /Volumes/OSXVOL/System/Library/Extensions

8.- Also delete the AppleHDA kext. Sometimes the boot process panics with the voodoo sound kext. And then, reboot. Leave the dongle connected.

# rm -rf /Volumes/OSXVOL/System/Library/Extensions/AppleHDA*
# reboot

9.- Again, press F12, select the USB boot device and this time boot your Lion Volume (OSXVOL) using "cpus=2 maxmem=4096". Now plug your USB keyboard as well. The boot process might hang. Please take note of the offending kexts if any. Otherwise try again a couple of times.

NOTE: You might be presented with the "Before we begin" screen. There are cases I've seen where the system claims it cannot find a keyboard, some other cases (like mine) the mouse was nowhere to be found. Workaround here http://www.insanelym... ... 66565.html. However this didn’t work for me either. Only after I booted with the "cpus=2 maxmem=4096" switches, the keyboard was detected. No need to say that I tested several models before.

10. Now complete the rest of the Mac OS X Lion setup process, create your username blahblablah.

11. You'll notice you have support for audio, USB and the internal NIC (Ethernet network). So plug your cable and hook it up to your router because we'll need an Internet connection to download the 10.7.5 upgrade combo, Chameleon Boot-loader, kext utility and whatever other thing you need. After that, I performed a time machine backup.

12. Backup made. Now launch the 10.7.5 combo upgrade. Install it and DO NOT reboot. Go back to your downloads and run and install Chameleon. Finish it and do not reboot.

13. Open a terminal window and delete the AppleHDA* kext, as it will be restored by the combo upgrade process.

$ sudo rm -rf /System/Library/Extensions/AppleHDA*

14. Reinstall the kexts from the Extensions folder of Acer 5755G kext pack.

15. Run the Kext Utility to fix perms or do it manually. Now reboot and boot from your local HD. This time your Lion is up to date. Congrats! Hope this worked for you.


16. For Dual Boot Installations there are chances of getting boot0 error. So if in case you had it then please follow these simple steps a-e.

For full guide please refer this link http://legacy.tonyma...pic.php?t=61081


a. Reboot system back into Lion installer.
b. Run Disk Utility and unmount the drive you installed OS Lion on.
c. Launch Terminal and execute the following command:


dd if=/Volumes/"###### Volume Name"/usr/standalone/i386/boot1h of=/dev/disk0s2


In my case my ###### volume is called "OS X 10.7.5" so my command would be:

dd if=/Volumes/OS\ X\ 10.7.4/usr/standalone/i386/boot1h of=/dev/disk0s2



d. Exit Terminal
e. Reboot Normally

Credits:

- :thumbsup_anim:Many thanks to the author and members of this thread (http://legacy.tonyma...=34477&start=50). I would have not been able to proceed without juankar guidelines.

- Given you made a backup with time machine feel free to experiment with kext and customization installs. Most probably you'll ruin it all (as I did) but you need only to boot with your USB dongle and perform a time machine restore.


- This guide will be updated with more responses received from members. So please feel free to let me know.


What's missing so far?

- Broadcom BCM43227 Wi-Fi support: I haven’t been able to find the proper kext. Any hints?. I changed to Atheros 9285.
- Bright control: After restarting laptop the brightness also resets to max level. I also found the brightness level being too high at min level. And Function keys are mismatched to “F12” and “Pause”.

- Élan PS2 Smart Pad V2 Track pad :I've seen some guides in other threads, haven’t had the time the check them out yet.
- USB 3.0: Not Working.
- HDMI: Not tested.
- Wi-Fi LED: Not Working.

Have a Nice Day!

Hi guys,

Note: Do not use ###### at any instance in this entire guide.



Note: Do not use Multi-Beast at any instance in this entire guide.

Thanks.

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Also tagged with one or more of these keywords: Dual Boot, windows 7, Mac OS X Lion, Acer Aspire 5755G, 10.7.5 Update


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