Unable to boot snow leopard on 32 bit mode

I'm using Macbook pro with Mac Os X 10.6.2. And it has no problem to boot under 64 bit mode, but fails under the 32 bit mode. Is there any suggestion? Thanks.

Since most 3rd party drivers are not ready for a 64bit kernel, it is possible that when booting the 64bit kernel, a 3rd party driver, that is not compatible with 32 bit Snow Leopard, is not being loaded.

Similar Messages

Boot up Leopard in 64-bit?

Ok, I'm hearing so much as to how to boot up the next version of Mac OS X in 64-bit. Is there anyway to boot up Leopard in 64-bit mode?

Hi,
"No"
Is the simplest and shortest answer I can offer you. If you have an intel Mac, you will be running.... mostly.... in 64 bit mode any way.
Regards.
Ian.

Mac Pro Classic, Snow Leopard, and 64 bit kernel

Hello, and thanks in advance for your thoughts and your help. A question was brought up on the macrumors forums about the shortcomings of the 2006 mac pro. Basically someone said that he would not get a used 2006 mac pro because "it can't boot into Leopard in 64-bit." I asked him what he meant and he said that he didn't think it was "true" 64 bit because in his system info it says "64 bit kernel and extensions - no". I poked around a little bit and found a good article:
http://www.appleinsider.com/articles/08/10/28/roadto_mac_os_x_snow_leopard_64_bit_to_thekernel.html
detailing that Leopard runs on a 32 bit kernel, mainly because every extension must be 64 bit in order to run on a 64 bit kernel, and that Leopard can run 64 bit applications even though it runs on a 32 bit kernel. The article states that Snow Leopard will be the first operating system on a 64 bit kernel.
Now, my question. Since my Mac Pro runs on 32 bit EFI instead of the new EFI 64, will I be able to have a similar 64 bit Snow Leopard experience? Will my EFI on my antique mac pro really limit the 64 bit Snow Leopard experience? Will my aluminum macbook be able to "do" more with snow leopard than my mac pro? and lastly, I am currently running the Radeon 4870 in my mac pro, since the guys at ATI snuck the 32 bit EFI onto the card as well as the 64 bit EFI, somehow. I wonder what's going to happen with all this when Snow Leopard drops.

I think part of the confusion is that the original Mac Pro does not enable 64 bit under Boot Camp. If you look at:
http://www.everymac.com/systems/apple/mac_pro/stats/mac-pro-quad-2.66-specs.html
The original Mac Pro is 64 bit in every way. Regular Leopard is not in the Finder. So there is still a chance you may get 64 bit processing on Snow Leopard even with the original Mac Pro.
From the above link:
Each of two Xeon 5150 "Woodcrest" Dual-Core processors have two independent processor "cores" with 4 MB of level 2 cache per processor. It also features a 128-bit SSE vector engine, 64-bit data paths and registers. Also offered, via custom configuration, were two 2 GHz Dual Core Xeon 5130 processors for US$300 less, two 3 GHz Dual Core Xeon 5160 processors for US$800 more, and starting April 4, 2007, two 3 GHz Quad Core Xeon X5365 (Clovertown) processors for US$1500 more.
I would not rely on AppleInsider as a resource. It is a rumor site.

Can not run Snow Leopard in 64 bit

Hi there,
I recently bought the Snow Leopard OS for my iMac 2007/2008 model.
Here are the specks on my iMac:
Model Name: iMac
Model Identifier: iMac7,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2,4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 4 MB
Memory: 4 GB
Bus Speed: 800 MHz
Boot ROM Version: IM71.007A.B03
SMC Version (system): 1.20f4
My question is, how is it that I can not run Snow Leopard in 64 bit – it is an Core2Duo which to my understanding is also an 64 bit processor.
To add to my confusion I’m running the Windows 7 64 bit version on the same iMac via VMware-fusion.
Had some help on this issue before, where this mac-person found an small program on the internet that is suppose to analyse and change some settings so it runs 64 bit - but my model was not supported by some odd reason.
Is here anyone that can reply on my question??
Thanks
Arni

Welcome to Apple Discussions.
I have to admit I'm a little confused. I don't believe your iMac is a Core 2 Duo. The only Core 2 Duo in 2007 was the mid 2007 24" 2.8 GHz processor, all other 2007 iMacs are 32 bit. I would recommend going to this site to see what the specifications are for your machine, simply type in the SN and it will let you know.
http://www.appleserialnumberinfo.com/Desktop/index.php
Regards,
Roger

Booting Snow Leopard as 64bit kernel

For all those wishing to boot Snow Leopard as 64bit, here's the how/why and a piece of free software that will do it for you
Info:
http://www.ahatfullofsky.comuv.com/English/Programs/SMS/SMS.html
Download:
http://dl.getdropbox.com/u/992591/SMS/32-%20or%2064-bit%20Kernel%20Startup%20Mod e%20Selector.zip
It's free but ask's for you to donate if you use it.
I am not affiliated with the developer in any way. I just use it
Bobs

Hi Peeps
Just a quick note to say I didn't start this thread to have people argue over the benefits of 64bit, I started it to answer how to make Snow Leopard boot into 64bit. I think that at the moment the benefits are slim to none but it is nice to experience. To clarify, I have been running Snow Leopard since the week it came out and after a few days with it I decided to run it as it was designed at 64bit. I do not use this OS for music, it is strictly my "domestic" OS, email/surfing/gaming etc. I have been enjoying since the switch a rock stable and slick OS. Most of the applications I use daily are indeed 64bit already and have also proved stable too. When my music drivers and plug-ins are indeed 64bit I will enjoy upgrading my work OS to Snow Leopard and subsequently all the benefits that 64bit can bring to all of our audio needs. I must say though, I am very impressed with Snow Leopard as an OS and after "demoing" Logic Pro 9.1 within it I am looking forward to the inevitable migration rather than dreading it as in the past with previous OS/Logic upgrades.
Hopefully you will enjoy 64bit as much as I have and within a short while we'll all have the pleasure of 64bit within our favourite occupation too.
Finally I do believe, correct me if I'm wrong, that on the Mac platform at least Logic Pro 9.1 is the first 64bit DAW. That to me is fantastic and needs applauding.
Cheers!
Bobs

Do I need a more recent mac mini to use my iphone 4 with. Im unable to download snow leopard because my mac mini is older. Do I need to get a new mac or is there something else i can do

Do I need a more recent mac mini to use my iphone 4 with. Im unable to download snow leopard because my mac mini is older. Do I need to get a new mac or is there something else i can do

Get Leopard.
System Requirements
Apple ID (required for some features)
Internet access6
Syncing with iTunes on a Mac or PC requires:
Mac: OS X v10.5.8 or later
PC: Windows 7; Windows Vista; or Windows XP Home or Professional with Service Pack 3 or later
iTunes 10.5 or later (free download fromwww.itunes.com/download)
http://www.apple.com/iphone/specs.html

Can I dual boot snow leopard and mountain lion if I've installed boot camp on my drive

Can I dual boot snow leopard and mountain lion if I've installed boot camp on my drive

Yes as I said before. If your model Mac came with Snow Leopard and you are now running Mt Lion and have Windows installed in a Boot Camp Partition all you have to do is make the Mt Lion partition smaller, take the free space and make it another Mac partition and you should be able to install Snow Leopard into that partition.
I have Snow Leopard, Lion and Mt Lion installed on my MBP. No Windows in a Boot Camp partition because I run Windows XP in a Virtual Machine on both Lion and Mt Lion.

Can I dual boot Snow Leopard and Mountain Lion on one hard drive?

I want to make a new partition and be able to boot to either OS. Is this possible, if so, how? I would think just make a new partition and install the dmg file to that new partition.

@jimmyk11: AppleCare has actually informed me that "No - this MacBooPro9,1 cannot boot Snow Leopard".
It originally came with lion 10.7.4 installed. I have since upgraded to Mountain Lion 10.8 and (today, after a week or so of ML) I reverted to Lion 10.7.4. But now I find I can no longer boot into Lion 10.7.4 from my external FW800 drive (for troubleshooting and housekeeping). So it looks as if the "boot problems" are not confined to Snow Leopard 10.6.8.
Interestingly, I can use this same external drive to boot my iMac (10.7.4) and my older MBP8,3 (10.8) into 10.7.4 - but not the newer MBP9,1.
The MBP9,1 with Lion and Mountain Lion is turning into a disaster when it comes to external booting. If I could, I'd demand a return and a refund. After bottle-feeding Lion for a year, 10.7.4 seems basically stable and can still boot into Snow Leopard and Lion from my external drives if needed. But now I see I have a worse problem: Crippled Hardware. I suspect this bug needs a firmware update - if it is fixable at all.

Can I erase the boot camp partition and dual boot snow leopard and mountain lion instead

Can I erase the boot camp partition and dual boot snow leopard and mountain lion instead

Please don't double post. Look at your other thread.
If you want to get rid of Windows and the BC partition use the Boot Camp assistant program to remove the Win/BC partition. Don't do it manually with Disk Utility Use the BC A program.

Mac Pro 2010 triple boot (Snow Leopard + Windows + Yosemite)?

Hello All,
This is my first question here, I'm usually trying to find the answer myself, but this time I wasn't able to find anything clear enough to me. So I hope that someone can give me clear and easy to understand answer. I must also tell that my English isn't perfect, but should be more than good enough for communication. :-)
I have Mac Pro 2010, 4 core CPU 3.2 GHz, 6 GB RAM, ATI 5870.
HD Bay 1: WD Black 1 TB - Boot Snow Leopard 10.6.8
(Just to add: I am happy because when I bought my Mac it came with 10.6. I am happy with it, it's stable, and I want to keep it as it is)
HD Bay 2: WD Black 1 TB - Boot Windows 7 x64 (bootcamp, full drive)
(I am very happy how it works, so I want to keep it as is)
HD Bay 3: WD Green 2 TB - for all kind of data storage
HD Bay 4: Was empty until yesterday, but now I have another WD Black 1 TB to put it in - still not formatted.
I would like to install Yosemite on that new drive (first I was thinking about Maverick, but then I saw that some new applications will not run, like Final Cut Pro X, new MS Office, still in beta, plus I would like to use iMessage, etc.), and keep everything else as it is now - absolutelly untouched.
• Is it safe to do it, or I can make some mistake and lose Snow Leo and/or Windows?
• Is position of the drives important? Should I, for example, put new drive in a Bay 3, and move data disk to Bay 4, or it doesn't matter?
• When I download it from App Store, and when installation starts automatically, do I have an option to select to keep untouched everything I have now?
(I don't want even to collect any data from Snow Leopard, like mail settings, bookmarks, applications installed - absolutely nothing, it should run as a totally new comp and without any interaction with Snow Leopard, except ordinary hard disk access, like any other hard drive)
• Will my bootcamp drive be safe, I will still be able to boot from it?
I was also thinking about this:
I saw that it is possible to make bootable USB flash drive with installation. If I do that, and if I phisically unplug all other drives except a new one, then do installation, shut it down, and plug back all other drives, will everything work? Will I have triple boot when I press option key during start-up? Does all this makes sense at all to you?
Finally, does anyone have some experience with Mac Pro 2010 + ATI 5870 with Yosemite? Is it smooth, no problems with graphics or some other things?
I will really appreciate some answer about all this.
Cheers!

Some tips about Yosemite and Core Storage from MacIntouch Reader Reports on Yosemite:
Ric Ford [MacInTouch]
Yosemite's changes have led to questions and confusion about disk formatting and partitioning issues, backward compatibility, and dual-booting Mac OS X 10.6 and Yosemite. Below are a few notes on these issues from an email discussion (questions, tips and clarifications are welcome).
Core Storage changes debuted in OS X 10.7 Lion, with Apple's new FileVault 2 whole-disk encryption and hidden Recovery Partition.
Generally, running OS X 10.7 and up shouldn't corrupt or convert the HFS+ partitions used by pre-OS X 10.7 systems (still supported in later OS X versions). There are, however, a few special cases to beware, and this is where things get confusing. Here are some specific issues:
1) FileVault 2 encryption and "Fusion" drives both depend on Core Storage, so applying those to any partition will render it inaccessible by pre-OS X 10.7 systems.
2) Yosemite's installation process silently converts a partition to Core Storage, incompatible with Mac OS X 10.6 and earlier. Ars Technica's review describes this issue.
3) Running Disk Utility's "repair" function in Yosemite against a Mac OS X 10.6 (HFS+) partition has caused problems in some cases, such as making the Mac OS X 10.6 partition unbootable.
(A search for Core Storage on MacInTouch will turn up more discussion and tips.)
See also:
Core Storage [Wikipedia]
OS X Mountain Lion Core Technologies Overview (PDF) [Apple]
OS X 10.10 Yosemite: Installation [Ars Technica]
File system changes in Lion [Ars Technica]
Can't remove Core Storage from hard drive [Apple Discussions]
How To: Disable CoreStorage on Mac OS X 10.10 (Yosemite) [Symantec]
http://www.macintouch.com/readerreports/yosemite/index.html#d16apr2015

HT201364 hi..i have ibookg4 i change the harddrive on it..can u tell me how to boot snow leopard on it..?

hi

You cannot boot Snow Leopard on a G4 iBook. Snow Leopard can only be installed on an Intel Mac.
     Snow Leopard General Requirements
       1. Mac computer with an Intel processor
       2. 1GB of memory
       3. 5GB of available disk space
       4. DVD drive for installation
       5. Some features require a compatible Internet service provider;
           fees may apply.
       6. Some features require Apple’s iCloud services; fees and
           terms apply.

I am unable to install Snow Leopard on a MacBook Pro

Hi
I am unable to update to Snow Leopard on my MacBook Pro. I have 2 GB of RAM. When I boot from the install disc I get an error message that this OS cannot be installed on this machine. Sorry, I don't have the error verbatim.
Am I missing something in the system requirements?
Is there another OS I need to install prior to installing SL?
Thanks
Andrew

Not impossible, but not likely, either.
I don't know why people keep telling me that what I saw couldn't have happened or is very unlikely. Whatever.
There are not many third party applications that can interfere with this, although maybe there are a few hacks & system 'enhancers' that could.
Little Snitch is not something that most people would call a "hack", and lots of people use it. I meant to quit it, and any other third-party background processes, but forgot. Shortly after I started the Snow Leopard installation, I _saw it block a connection attempt_ by the installer. I allowed the connection, but nonetheless something went wrong. When everything completed and my machine restarted, I still had 10.5.8... absolutely nothing had changed. (I'm not complaining about the "nothing changed" part... I could have ended up with a destroyed system and I didn't.)
I rebooted from the SL disk, repeated the installation and everything went fine.
Moral of the story? Do your system installs in the most controlled environment possible, which means rebooting from the disk.

IMac8,1 running Snow Leopard with 64 Bit kernel and dual monitor

I've got an early 2008 Imac with an ATI Radeon HD 2600 Pro card running Snow Leopard 10.6.3.
When I run the kernel in 64 bit mode the second display turns on and off periodically. Running in 32 bit mode it's fine.
Is this a known issue?

AFAIK, Mac Pro (2006) is EFI32 and is not capable of booting the 64-bit kernel, but the system is fully capable of running 64-bit applications using the 32-bit kernel.
This question can be confusing and context-dependent, and there can be different reasons for asking about the "64-bitness" of the kernel. Particularly whether the application support for 64-bit is available, and whether the kernel itself is 64-bit.
For 64-bit application support. AFAIK, you have that.
For 64-bit kernel support, and the associated requirements for having 64-bit kernel extension (kext) support for your applications, and AFAIK, you don't have that.
See [Mac OS X v10.6: Starting up with the 32-bit or 64-bit kernel (ht3773)|http://support.apple.com/kb/ht3773] for the mechanisms available for Snow Leopard and Snow Leopard Server, if you want to test your current configuration. AFAIK, you have a 32-bit kernel.
You can join the Apple developer program and then download the developer preview of [Mac OS X Lion release|http://www.apple.com/macosx/lion> if you want to learn more about that topic.

Not able to run installer when booting (Snow)Leopard on MacBook Pro Unibody

Hi all.
I would very much appreciate any help with this issue...
I have recently installed an app called monolingual(stay away from it - don't touch it with a stick) - I thought I'd get a couple of GBs off my HDD by deleting the surplus languages... Unfortunately this resulted in other apps behaving strangely and rendered them unusable. I thought this would subside, if I'd reboot the machine. Unfortunately what I found, when i did so, was a blank default MacOs wallpaper(the one with the universe) and nothing else - not even a login prompt... Long story short - I have tried many things in single user mode - booting in verbose mode, to see what's up(nothing out of the ordinary) - booting in safe mode(didn't change a thing), and of course trying to restore my HDD from Time Machine - God bless time machine... Unfortunately in order to do that - I need the MacOs installer(which can't be reached) - I have tried to boot from DVD, while holding the C key, the option key - then choosing the DVD as the bootable device of choice, I've tried to install it remotely from my brother's macbook via ethernet - nothing worked. Also I have attempted the PRAM NVRAM reset as well as the SMC... I have tried all these things with both OsX Leopard and Snow Leopard... Nothing at all worked. To make matters worse, I am worried about my hard disk, as the only way I can shut my machine down is by holding down the power button, until it turns off(keyboard shortcuts don't work, and there are no menus or anything available) - that can't be good for HDD. As far as booting from my superdrive goes - the DVD seems to be booting{I can hear it working and see the progress (the dots and the drivers loading) in verbose mode}, however at some point it just reboots the laptop with no warning or message, and the whole ordeal repeats. I am desperate and running our of options... could someone please, please, please help? Any clue or tip would be greatly appreciated and will most likely spare me a nervous breakdown.
Am I completely screwed, or just a little? Can this be fixed? For the record, I have no Apple Care, and my 1-year warranty had expired in November. Any suggestions?
Thanks up-front to any kind soul with an answer or just kind words.
Sincerely,
Piotr.

Re-partitioning a drive without losing data is a very difficult task. The data on the TM drive are, at this point, irreplaceable.
It has been safe and a very common practice on a Mac to be able to add, remove and resize partitions for years. Apple supports it well with Disk Utility, and even for Bootcamp.
Time Machine is just a file/folder on a partition, even if it's only on one partition. The Time Machine drive itself is not special in any way other than it has been set up to work on a Mac with the proper partition scheme and format.
I was just suggesting a way to use the OP's mentioned hardware to perform some sort of test that would prove something, in order to know which step to recommend next. If Disk Utility says it can not create a new partition at the end of a drive, then there are fragments of data in the area and Disk Utility will refuse to resize the first partition to be slightly smaller. The OP can also go buy another drive for the experiment, and also use his brother's drive like *R C-R* mentioned. He can even buy a large USB thumb drive but I don't think he needs to buy anything for a 'test'.
It is also very common for users to create new separate partitions on an existing TM drive for other machines to use. In fact, this is the preferred storage method when sharing TM with different machines because a partition can be easily removed without disturbing adjacent TM backups, it provides for a way to control the size of each machine's TM backup, and because it's much faster to replace a partition instead of trying to delete a TM backup with Finder. These are accepted practices we've learned the hard way.
Going the other way, I routinely set up external 1TB drives for two partitions. The first 750GB partition is for TM, and the second is for a SuperDuper bootable clone. As requirements or user preference for TM or SuperDuper may increase due to larger boot drives or for whatever reason, the second partition can easily be deleted, and the first partition can be safely enlarged, with no data loss.
Now in the case of a drive that is over 85% full or was ever that full, there is a high probability that the second partition can not be created due to files getting copied to the end of the drive. Disk Utility will refuse to change a drive like this.

How Come the iMac Can't Boot Snow Leopard DVDs Anymore Under Lion and ML?

Hi. I'm using ML as my main OS but I noticed when after installing Mountain Lion it doesn't recognize and just ejects the Snow Leopard DVD installers that came with my Mac (you could boot to it when the iMac had Snow Leopard). It doesn't see it as bootable anymore (it doesn't appear as bootable when you boot then press option nor does Startup in System Preferences see it as bootable. The DVD's are in good condition coz' it's not used that often):
Windows 7 Ultimate & Windows 8 Release Preview installer on a DVD-RW which is sees as blank (but it works find on a PC).
Only Snow Leopard that's in a USB (not sure how they made that but it was made for me by Apple repair center). I did back the SL DVDs years ago as .cdr (Master). I'm not sure if the .cdr images of the original SL DVDs can be burned into dual layer DVDs and work like the original (how do you go about that? Do you just burn .cdr like you would with .iso or .dmg?)
I think the hidden recovery partition starting with Lion is actually preventing DVDs from SL to lower versions from being recognized as bootable. Same with bootable Windows DVD-RW as Apple and the rest of the industry (I noticed netbooks now have recovery partitions too) switch to hidden partition and USB installers instead of medias like DVDs and CDs. I would guess if you could install Snow Leopard using an SL USB installer and complete erase the main hardisk along with the hidden recovery partition, install Snow Leopard it'll recognize Windows burned in DVD-RW again.
I can't install Bootcamp coz' it sees Windows 7 & 8 installers as blank drives, even Windows USB installers are not bootable (both USB and DVD-RW installers work fine on the PC). I'm thinking of disabling the iMac's Superdrive by moving in a folder or renaming its driver/extension IOSDVDStorageFamily.kext maybe tomorrow so hopefully when BootCamp sees that the iMac doesn't have an optical drive it'll show the Create USB Installer option (now it only show 2 options) so that it'll create the installers into the Flash drive.
I'm anxious of booting the USB Snow Leopard Installer and erasing the drive completely along with ML's recovery partition then installing SL in the hardisk because my Time Machine backup could get messed up. It might not restore the ones backedup by Lion and ML, although I could manually copy paste the documents but that'll defeat the main purpose of having a Time Machine backup.
Has anyone experienced this too with their Snow Leopard DVDs and Windows USB installers? Any solutions?
Thank you in advance.
God bless.

Zap the PRAM and Reset the SMC, then try again.

Unable to boot snow leopard on 32 bit mode

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