Mac OS install help

August 7, 2012 at 12:53:23
Specs: Windows 7
Im trying to do a clean install for a friend of mines on his imac. It is currently on the tiger os and I was wondering do you have to install it in order from leopard, snow leopard, lion, and mountain lion to make it work? I used parted magic and it booted up fine on the mac but the mac also has a disk utility that wipes the disk also can I use either one? I was wondering if I can just wipe the disk and do a clean install from any mac os x or do I have to install it in order? I have tried putting lion and mountain lion on a usb and booting but it just says it cant boot from that mac os x.

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#1
August 7, 2012 at 14:21:25
Which model iMAC ?

http://www.everymac.com/systems/app...


It makes a difference wether a PPC or Intel Mac

PPC will only support up to a maximum 10.5.8 Leopard if the iMac meets system requirements (this is what I use daily)

Intel will support up to 10.8.x if meets system requirements.

If you post back model from the link above I will help further............

ARM Devices the future. Windows have accepted the fact!


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#2
August 7, 2012 at 15:25:35
It looks like the imac T7400 20" screen, all the specs match up to that one. Its on mac os x 10.4.11. What is PPC btw? Sorry for these dumb questions im more of a windows guy.

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#3
August 7, 2012 at 22:30:11
PPC is the CPU used on early Macs, Intel CPU is used on later Macs.

T7400 http://www.everymac.com/systems/app...

The T7400 only supports up to OS X 10.7.x Lion, see:

http://www.mac-forums.com/forums/os...

ARM Devices the future. Windows have accepted the fact!


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Related Solutions

#4
August 8, 2012 at 11:00:17
Note that Apple say that Lion requires a minimum of 2GB RAM.

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#5
August 8, 2012 at 13:44:27
Can I just wipe the HD and do a clean install of lion or do I have to install it in order to even get lion? Also what type of ram does it use dimm or sodimm? I see on the website it says pc2-5300 ddr2 sdram 667mhz but it doesnt specify if its desktop or laptop ram. Maximum ram is 4gb correct?

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#6
August 8, 2012 at 14:56:53
http://www.crucial.com have a system scanner which will recommend the correct memory.

OS X 10.6 if you can find a Retail Full Version, DVD or USB, then you do not need earlier version.

Model specific OS X 10.6 DVD will not install !


ARM Devices the future. Windows have accepted the fact!


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#7
August 8, 2012 at 23:56:20
I'm still unclear as to whether you have positively identified what model of Mac you have and how much RAM it has. Click on the Apple icon in the menu at the top of the screen and select "About this Mac". That will tell you what processor and how much RAM you have.

As has been said, you must use a proper retail DVD, not a model-specific special from eBay. Earlier Macs couldn't boot from USB so, again, the exact model is important. Personally, I would stick with Leopard or Snow Leopard at the most with a machine that old.

And don't use anything but the Apple disk utility to partition and format the drive. Otherwise, unless you know exactly what you are doing, you will end up with an unbootable Mac. Macs are not PCs, so don't try to apply PC knowledge to one.


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