You can try to boot with "-x -v" command which mostly to takes you successfully to OS X GUI in safe mode. Then you can search the internet for the solution for your graphics hardware. 

You may try with selecting none of the graphics related packages or the appropriate graphics disabler packages for your setup under VGA drivers section during install to make sure that it is a graphics related issue.

Then after a little more reading and search (if needed) you can install iATKOS ML2 with the right settings for your computer and solve the problem.

-Change your SATA mode from IDE/RAID to ACHI by your BIOS setup.

-You may need to check other BIOS settings that might be the problem.

-You can try the other SATA ports for your DVD/Blu-Ray drive.

-You can try updating your BIOS version.

These steps usually fix the problem. If not, then you can try to install using a USB media. If still no light, then your hardware is not compatible with OS X at that point.

-You can try to boot with "USBBusFix=Yes" command

If it does not help, it can still be solved by dsdt edits for some cases, which needs knowledge and additional operations to iATKOS ML2 restored USB media.

*HDD Boot after installation:

-Apply the same steps with DVD boot above

-Re-install iATKOS ML2 with re-arranging your install selection list.

For windows, make sure the windows target disk is the first preceding disk by your BIOS, or unplug the other harddisks. This is a general windows issue.

For linux, do not install linux bootloader to MBR, install it to linux root.

- If Windows fails to load then you may need to repair Windows (win7 or vista):

Add boot flag to Windows partition, boot Windows DVD, select repair, add boot flag to OS X partition.

- You can also add boot flag to Linux partition to use Linux bootloader for booting the operating systems if you want to.

Now you have triple boot on MBR.

Do not install the linux bootloader to MBR, install it linux root.

Do not change the boot flags using Linux media.

Do not modify the partition table, it can be risky for some distros, just erase the target and do the install.

Now you have triple boot on GPT. By default, OS X bootloader will take the control by these steps. It can boot all of them by just selecting. If you want linux or windows to take the control of multibooting then go on reading..

- gptsync will be needed after Linux re-install

- you need to re-install OS X bootloader after Windows re-install. Boot iATKOS ML2, open terminal by the utilities menu, install the bootloader using terminal (Search on Google). If you use linux for multibooting then this step is not necessary.

i.e. Keep in mind that hybrid GPT may fail when dealing with linux stuff, then windows will not boot. Do not use Linux media for partitioning operations on Hybrid GPT, it breaks Hybrid GPT causing an unbootable windows. There comes the gptsync terminal program, it creates a fake MBR code on GPT drives that make Windows think it works on MBR partitioned hdd.

You can always apply gpysync if hybrid GPT is broken somehow. After bringing back the hybrid GPT partition, windows will work again.

For OS X fdisk, boot iATKOS ML2 and open terminal:

p # p is the fake MBR partition list

f Y # f for adding boot flag to the target partition, Y is the partition number you want to boot from

w # w to write changes

q # q for quit.

fdisk: 1> p

Disk: /dev/disk0 geometry: 30401/255/63 [488395055 sectors]

Offset: 0 Signature: 0xAA55

#: id cyl hd sec - cyl hd sec [ start - size]

------------------------------------------------------------------------

1: EE 1023 254 63 - 1023 254 63 [ 1 - 409639] <Unknown ID>

2: AF 1023 254 63 - 1023 254 63 [ 409640 - 97656256] HFS+

3: 07 1023 254 63 - 1023 254 63 [ 98328576 - 97654784] HPFS/QNX/AUX

*4: 83 1023 254 63 - 1023 254 63 [ 195983360 - 97654784] Linux files*

fdisk: 1> _

disk utility layout:

250.06GB WDC WD250…

-OS X

-Windows

-disk0s4

-Data 2

--------------------------

menuentry "OS X" {

insmod hfsplus

set root=(hd0,2)

multiboot /boot

}

menuentry "Windows 7" {

set root=(hd0,3)

chainloader +1

}

menuentry "Debian GNU/Linux……

###

- You can create RAID volumes and install Lion on RAID using iATKOS ML2.

Striped RAID (RAID-0): A RAID-0 set splits data evenly across multiple disks with no parity information for redundancy. RAID0 is normally used to increase performance for both read and write. It can also be used as a way to create a small number of large virtual disks out of a large number of small physical ones. Simply it is a way to use the disks like using the dual or more channel RAMs, so it increases the read and write performance more than a bit. RAID0 sets are advised for the main system volumes to increase the performance of the OS.

Mirrored RAID (RAID-1): A RAID-1 set creates an exact copy of a set of data on two or more disks. This is mostly for data safety and also an increase of performance for read operations is expected. The RAID array can only be as big as the smallest member of the slices. RAID1 sets are used for security and advised for data storage volumes.

Concatenated Disk set: Which is not exactly a RAID level. The slices are merely concatenated together, end to beginning, so they appear to be a single large disk. It provides no data redundancy. This may be thought of as the inverse of partitioning. Whereas partitioning takes one physical drive and creates two or many more logical volumes, concatenation uses two or more slices to create one logical volume. No increase in performance is possible and neither increased data reliability is possible.

- For RAID target, ML2 installs the bootloader to the boot helper partition of the preceding disk of the RAID set, so the first disk by your bios will be the Mac OS X boot disk.

You can install any foreign bootloaders to other harddisks of your RAID set, there will be no harm for your RAID set. On my test 3x RAID0 system, second HDD has Grub bootloader and the third one has Windows bootloader, all of them are installed seperately and running fine. Grub and Chameleon can easily boot all of the 3 OS' and also windows can be manipulated to boot them.

2- Select it as destination for install

3- Click Customize and select what you need

4- Click Install

- Set your BIOS to its default settings.

- Execute Disable bit: Enabled

- XD (if exists): Enabled

- Limit CPUID Max: Disabled

- Set all cores of the CPU active/enabled.

- Virtualization (if exists): Enabled or Disabled, try it.

- Hyper-threading: Enabled or Disabled, try it.

- HPET (High Precision Event Timer/PCH): Enabled

- SATA Mode: AHCI

- Set all the Overclock/Performance/Turbo etc. values to Auto.

- Set the UEFI mode settings (if exists) to compatible mode

If you don't need/want to change your existing partition table type, just do not touch it. If you want to change it, note that all your existing data on target harddisk will be gone.

Advantages:

-You can add/remove partitions and change the size of them on a GPT partitioned drive without repartitioning and you can even do it on-the-fly on a running OS X system partition.

-You can create up to 128 bootable partitions on a GPT partitioned drive.

-You can use Software RAID only on GPT partitioned drives for OS X.

Disadvantages:

-Multiboot is not so easy to manipulate for newbies.

Advantages:

-Pretty easy to manipulate multiboot

Disadvantages:

-Partitioning operations with OS X Disk Utility need recreationing of the whole partition table.

-No Software RAID for OS X

-2TB partition size limit

-You can have max 4 bootable partitions (4 primary partitions) for OS X. You can only boot the OS X installations on the rest of the partitions (logical partitions when more than 5) over first 3 primary partitions.

The target should be a Primary Partition for MBR partitioned harddisks.