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OS X - Operating System General OS operation information and support

XP to Lion on imac


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homerjay

 
Member Since: Oct 09, 2011
Posts: 3
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hi all

ive aquired an old iMac from my dad as im intrested in app development, but he had Windows XP installed on it.

ive bought OSX lion on USB thumb drive, without realising you are meant to upgrade from previous version of OSX

i was hoping i could boot from the the USB and install from there.

he doesnt have any original disk so i cant restore.

how do i get OSX lion on this iMac

thanks in advance
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jetmech1

 
Member Since: May 19, 2009
Location: Charlotte, NC
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The iMac should boot from the USB drive. Then install from there.

Mac Mini - 2.5 GHz i5 - 8 GB - 128 GB SSD & 1 TB HD - 2 Apple 23" LCD
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homerjay

 
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hmm, it just goes straight to windows.

and i cant find a way to get to the bios to enable it to boot from usb
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jetmech1

 
Member Since: May 19, 2009
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Hold the option key during the boot.

Mac Mini - 2.5 GHz i5 - 8 GB - 128 GB SSD & 1 TB HD - 2 Apple 23" LCD
15.4" Unibody MBP - 2 MacBook Airs
2 iPads, 3 iPhones, 3 iPods, 1 Apple TV
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homerjay

 
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thanks i'll try that.
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jetmech1

 
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Don't have to go to BIOS as the iMac does not have that. Just hold the option key during the boot cycle and then select the USB drive.

Mac Mini - 2.5 GHz i5 - 8 GB - 128 GB SSD & 1 TB HD - 2 Apple 23" LCD
15.4" Unibody MBP - 2 MacBook Airs
2 iPads, 3 iPhones, 3 iPods, 1 Apple TV
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chas_m

 
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When you say "old" iMac -- how old? What model?

How do we know it's even capable of running Lion?
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dtravis7

 
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Quote:
Originally Posted by chas_m View Post
When you say "old" iMac -- how old? What model?

How do we know it's even capable of running Lion?
That actually is a good point. With XP you can't give us all the specs, but what Mac is this? Is it Intel or old Power PC? Lion will only install on a Core2Duo CPU or higher.
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mrplow

 
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I'm guessing it's an intel Mac (XP wouldn't run otherwise).

Just depends if is Core2Duo or DualCore

Once XP is running - right-click 'My Computer' and choose 'properties' this should tell you which processor is in there and how much RAM you have

External hard disk acquisition addict - but admitting the problem is the first step to a robust backup

Please use the reputation system if you think you've been helped - top right of this post
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