Installing Photoshop on 64 bits and switching to 32 on Lion

lionnewbie · Aug 12, 2011, 02:04 PM

Hi,

I will be installing photoshop CS5 on my new macbook air i5.

As some of you may be aware, Lion and I believe Leopard run as 64 bit operating systems, but apparently you can switch easily to 32 bits by rebooting the machine and holding down the keys 2 and 3.

My question is, have any of you installed Photoshop CS5 on lion yet, and can you please let me know if you can run Photoshop when the operating system is running at 32 bits?

And don't worry about needing to do anything to switch back to 64. It does it automatically once you reboot again after being in 32 bit mode.

The reason I ask is because I run some special work related programs that only run while the OS is set to 32, so I want to know if it is possible to run Photoshop irrespective of how you are running Lion.

Thanks so much for your info.

iTabone · Aug 12, 2011, 02:08 PM

I'm actually thinking of going lighter and using the slim PS on the Mac App Store.

lionnewbie · Aug 12, 2011, 02:10 PM

Quote:

Originally Posted by iTabone

I'm actually thinking of going lighter and using the slim PS on the Mac App Store.

Which features are missing from that version when compared to the full version you can download from the adobe site?

ro050408 · Aug 12, 2011, 11:50 PM

Quote:

Originally Posted by iTabone

I'm actually thinking of going lighter and using the slim PS on the Mac App Store.

I just checked the App Store, and I do not see any versions of Photoshop on there. What are you seeing?

Charcoalwerks · Aug 13, 2011, 12:24 AM

You can get Elements on the App store.

B.Chang · Aug 13, 2011, 12:32 AM

Quote:

Originally Posted by Charcoalwerks

You can get Elements on the App store.

Correct me if I am wrong, but I remember reading somewhere that the PSE on the App store is a cut down version of elements.

xraydoc · Aug 13, 2011, 07:59 AM

Quote:

Originally Posted by lionnewbie

Hi,

I will be installing photoshop CS5 on my new macbook air i5.

As some of you may be aware, Lion and I believe Leopard run as 64 bit operating systems, but apparently you can switch easily to 32 bits by rebooting the machine and holding down the keys 2 and 3.

My question is, have any of you installed Photoshop CS5 on lion yet, and can you please let me know if you can run Photoshop when the operating system is running at 32 bits?

And don't worry about needing to do anything to switch back to 64. It does it automatically once you reboot again after being in 32 bit mode.

The reason I ask is because I run some special work related programs that only run while the OS is set to 32, so I want to know if it is possible to run Photoshop irrespective of how you are running Lion.

Thanks so much for your info.

From another thread I see you're buying a MacBook Air.

You should know that, as far as I've read, Lion runs full-time as a 64-bit kernel. If you have software that runs only on a 32-bit kernel, you better make sure it's Lion compatible. AFAIK there is no 32-bit kernel on Lion.

And the new MBAs only run Lion.

I could be wrong, but it sounds like you'll need to check it out.

----------

Quote:

Originally Posted by B.Chang

Correct me if I am wrong, but I remember reading somewhere that the PSE on the App store is a cut down version of elements.

I think it's missing the photo organizer module. They're presuming the buyer will be using iPhoto for that functionality.

chrfr · Aug 13, 2011, 08:16 AM

Quote:

Originally Posted by lionnewbie

The reason I ask is because I run some special work related programs that only run while the OS is set to 32, so I want to know if it is possible to run Photoshop irrespective of how you are running Lion.

Photoshop CS5 will run as a 64-bit app even on a 32-bit kernel, so you don't need to do anything with it. Most applications don't directly interact with the kernel.

wordplanet · Nov 30, 2012, 05:00 PM

You can switch Photoshop CS5 to 32 bit on Lion to work with plug-ins such as vertus. You also need to run it in 32-bit mode if you want to use the Exposure slider in Photoshop (not in RAW, that runs at 64-bit). I've done it. It doesn't switch back to 64-bit when you restart the computer, at least not on my iMac nor on my Macbook Pro - both running Lion and CS5.

Beanoir · Nov 30, 2012, 05:12 PM

Quote:

Originally Posted by wordplanet

You also need to run it in 32-bit mode if you want to use the Exposure slider in Photoshop (not in RAW, that runs at 64-bit). I've done it. It doesn't switch back to 64-bit when you restart the computer, at least not on my iMac nor on my Macbook Pro - both running Lion and CS5.

My CS5 exposure slider works fine, and I don't ever run it in 32bit....and thats on my MBA and my iMac...

Aug 12, 2011, 02:04 PM	#1
lionnewbie macrumors newbie Join Date: Aug 2011	Installing Photoshop on 64 bits and switching to 32 on Lion Hi, I will be installing photoshop CS5 on my new macbook air i5. As some of you may be aware, Lion and I believe Leopard run as 64 bit operating systems, but apparently you can switch easily to 32 bits by rebooting the machine and holding down the keys 2 and 3. My question is, have any of you installed Photoshop CS5 on lion yet, and can you please let me know if you can run Photoshop when the operating system is running at 32 bits? And don't worry about needing to do anything to switch back to 64. It does it automatically once you reboot again after being in 32 bit mode. The reason I ask is because I run some special work related programs that only run while the OS is set to 32, so I want to know if it is possible to run Photoshop irrespective of how you are running Lion. Thanks so much for your info.
	0

Aug 12, 2011, 02:08 PM	#2
iTabone macrumors regular Join Date: Jul 2008	I'm actually thinking of going lighter and using the slim PS on the Mac App Store. __________________ 2011 15.4" Sandy 2.2 GHz i7 Macbook Pro 750GB HD 8 GB Memory 6750M with 1GB GDDR5 2011 11.6" i5 Macbook Air 128GB SSD 4 GB Memory
	0

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Aug 13, 2011, 12:24 AM	#5
Charcoalwerks macrumors regular Join Date: Jul 2011	You can get Elements on the App store.
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Nov 30, 2012, 05:00 PM	#9
wordplanet macrumors newbie Join Date: Nov 2012	You can switch Photoshop CS5 to 32 bit on Lion to work with plug-ins such as vertus. You also need to run it in 32-bit mode if you want to use the Exposure slider in Photoshop (not in RAW, that runs at 64-bit). I've done it. It doesn't switch back to 64-bit when you restart the computer, at least not on my iMac nor on my Macbook Pro - both running Lion and CS5.
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