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.

Similar Messages

  • 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 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.

  • Can I dual boot windows 7 and mountain lion with an external hard drive.

    I have Mac OSX mountain lion installed and running on my 2TB external hard drive. Boot camp says that I have to use the default flash storage that came with my computer.. Is there a way to put it on my external hard drive if I partition it? I also am having a problem when I tried to use the default storage the setup would not let me format it to NTFS

    By default, Boot Camp formats the drive with FAT32. That's because Windows XP could be installed with FAT32 so, in order to write on that partition on Mac OS X, Boot Camp used it instead of NTFS.
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  • Install boot camp snow leopard and mountain lion

    Is it possible to install boot camp on a 2009 Mac Pro to run both Snow Leopard and Mountain Lion? The startup drive is already partitioned. I need to run two different versions of Final Cut Studio (and all the accompanying apps) and this seems the best way to keep them segregated. I know that I can run them both in Snow Leopard, but I have two different sets of Motion templates which need to be accessed.

    Alrighty, I do appreciate your time. I had already tried parallels and that was a huge waste of time. You blow away their support, by the way.
    Just to confirm assumptions before I do this, sorry, I'm an engineer.
    1. The startup drive is partitioned already.
    2. Partition (1) contains Snow Leopard and a user account.
    3. Partition (2) currently contains a media library, does not have an OS on it, and has 232 GB free.
    4. I will install Mountain Lion on partition 2 using the dmg downloaded from the app store.
    5. That partition will then become the startup drive when using mountain lion.
    6. Partition 2 will have its own user account, applications, etc.
    Almost forgot. Do I need to erase and install on that partition or can I simply install? After this I owe you a beer.

  • Can I upgrade from Snow Leopard to Mountain Lion?

    I know it may sound lame to ask this but... can I upgrade from Snow Leopard to Mountain Lion skippin Os Lion?? I'm on a MacBook Pro Intel Core 2 Duo 2.2ghz and I just got Snow Leopard. Do I stay there or can I get the new OS?

    Welcome to Apple Support Communities
    Of course. Open the Mac App Store and purchase OS X Mountain Lion. Make a backup of your files with Time Machine and check that your applications are compatible > http://www.roaringapps.com
    To upgrade to OS X Mountain Lion, you should have at least 4 GB of memory. You can check the amount of RAM you have in  > About this Mac.
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  • Can i upgrade from snow leopard to mountain lion and stay with iTunes 10.7?

    I woukld like to upgrade from snow leopard to mountain lion but i don't want the new iTunes 11. Is this possible?

    Welcome to Apple Support Communities
    Of course. Open the Mac App Store and purchase OS X Mountain Lion. Make a backup of your files with Time Machine and check that your applications are compatible > http://www.roaringapps.com
    To upgrade to OS X Mountain Lion, you should have at least 4 GB of memory. You can check the amount of RAM you have in  > About this Mac.
    OS X Mavericks will be launched in weeks and will include new features > http://www.apple.com/osx/preview

  • Dual Boot Snow Leopard and Leopard

    Hi All
    i am looking to Dual boot my Intel iMac with Leopard (10.5.8) + Snow Leopard (10.6) for testing purposes.
    How do i go about doing this?
    I have the Leopard install disc
    i do not have Snow leopard yet and the only version i have seen is an update disc you can buy from apple for about £25 is this ok to use or will i need a copy of the full version?
    if i need a copy of the full version where can i find it?
    my current hdd setup is:
    1 partician very large for data about 255GB
    + another 40GB Partician with Mac OS X
    I assume i will need to create another partician about 20GB and call it Snow leopard and use the leopard disc to install onto the new partician then upgrade the newly installed leopard partician with the new snow leopard disc??
    Thanks in advance
    Regards Sam

    Apple has managed to fool a lot of folks with their pricing. If you paid the US$129.00 to upgrade your Mac from Tiger to Leopard, then you qualify for the US$29.00 upgrade from Leo to Snow Leopard. If you did not upgrade from Tiger to Leo, you should buy the US$179.00 box set, which includes Snow Leo, iLife '09 & iWork.
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    Dah•veed

  • Can I run Snow Leopard and Mountain Lion on the same iMac?

    I have a late 2009 iMac with a 1tb hard drive running Snow Leopard.  Can I partion the hard drive and upgrade to Mountain Lion on one part and keep Snow Leopard on the other?  If not, can I partition my external back-up drive that I use for Time Machine to do the same thing?

    Niel wrote:
    Parallels will work with Mac OS X Server but not the client version of 10.6.8 or earlier.
    (69744)
    Snow Leopard client 10.6.8 (with Rosetta) running in Parallels 7 (or 8) in Lion:
                                  [click on image to enlarge]
    Full Snow Leopard installation instructions here:
    http://forums.macrumors.com/showthread.php?t=1365439

  • Am using Macbook pro mid 2010 running on OSX 10.9.5. It does not read my old Seagate back up plus ITB ext hard disk which opens and works on snow leopard. The back ups were made on snow leopard and mountain lion. How do I make it work on Mavericks?

    I have been making back ups on a Seagate Back up plus drive on a macbook pro running on Mountain lion. Sadly the mac was stolen and all I had was the seagate back up. I tried opening it on my old iMac running on snow leopard and after several visits to this forum managed to open it. The data was safe and sound. Now I have received a hand me down macbook pro which runs on osx 10.9.5. I'm assuming there is a compatability issue as the drive does not come on at all when I hook it up to the usb port. I checked the seagate drive once again on the imac and its light came on on that system. Then I suspected there may be a problem with this macbook pro usb port. But it seemed to work fine when i hooked my camera cord into it. Is it that I must reinstall mavericks. In which case how do I back up before reformatting or reinstalling. BTW I did the command+ R thingy and repaired my internal Hard disc which was showing errors. What do I do next, your help is most appreciated if you have had a similar problem.

    Your 2010 MBP would be able to handle Yosemite, but I would strongly suggest that you get the current problem sorted out before trying to upgrade to Yosemite. I'd also recommend another backup that isn't created by Time Machine if you are thinking of upgrading. SuperDuper and CarbonCopyCloner can make bootable clones of hard drives. If you clone your existing system to a fresh external drive, you would be able to boot from that drive and recover quickly in the event that your Yosemite upgrade didn't work out. Time Machine backups are not 100% reliable.
    It's possible that, if your internal HD is the one that shipped with your MBP in 2010, it may be failing. If it keeps needing repairs, that is probably a sign that it is approaching the end of its useful life.
    Have you run Disk Utility's Repair tool on the external drive as well?
    I mentioned the hub because some people have reported here that attaching their USB 3 drives through a USB 2 hub solved some disconnection problems. A good-quality powered USB 2 hub won't cost much.
    My most recent brush with random disconnections involved a nice new OWC drive enclosure. I used the cable that came with the drive, but the drive kept disconnecting. Using a different cable solved the problem. You wouldn't expect that what appeared to be a high quality cable would be a problem straight out of the box, but it was.

  • How can I revert to Snow Leopard from Mountain Lion on a 2013 iMac?

    I have a brand new 27" 2.9Ghz iMac, bought a few days ago, equipped with Mountain Lion. I'm using it for recording, and at the time, my recording software and hardware are incompatible. On Snow Leopard, however, it all runs flawlessly. I know I can't simply revert to Snow Leopard, as there is some sort of firmware that blocks these types of downgrades. Can I partition the internal hardrive and install Snow Leopard and boot from that partition? I have no real use for Mt. Lion for the time being, so I wouldn't need to boot them both simultaneously or even go back and forth. I just want Snow Leopard...any help would be much appreciated. Thanks

    Welcome to the Apple Support Communities
    You have different problems with a Late 2012 iMac and Snow Leopard:
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    2. Snow Leopard isn't compatible because it hasn't got the drivers for the hardware of the iMac. Furthermore, you can only run OS X 10.8.1, 10.8.2 or 10.8.3 on a Late 2012 iMac at the moment, because older versions haven't got the drivers it needs.
    3. It's illegal.
    As you can see, you can't run Snow Leopard natively. If this is a requirement, I suggest you to return your iMac and search a Mid 2011 iMac with Snow Leopard (there are some Mid 2011 iMacs that came with Snow Leopard, although most of them came with OS X Lion). If you don't find anything, buy a Mid 2010 iMac.
    Another possibility is to buy Snow Leopard Server and install it on a virtual machine, but I doubt it's legal

  • Can I dual boot OS 9 and 10.5 on one of these (G4 MDD)?

    Simple question, can you dual boot OS 9 along side OS X Leopard on I'm looking a 1.25ghz G4 (single processor), basically the last one Apple ever released in 2003. It says in the specs for it that it can boot OS 9.2.2 and it is also compatible with Leopard. I know Leopard isn't compatible with the classic environment but I don't want classic in OS X, I merely want to be able to boot into OS 9 for some games, and when I want to use the web to be able to boot into Leopard.

    Welcome!
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    Several people here have called Apple fpr these and were told they no longer carry replacement disks for this machine. It's back to eBay or the local Mac user group. Any used Mac that does not come with the system restore disks should be considered defective and avoided, or at least heavily discounted. Can the seller find the disks for you?
    Every time I try to transfer a System Folder to the machine..........
    That because you need the special version of OS9 on the system disk.
    I do have a 733 G4 with a valid OS 9 System Folder. Can I transfer that via target mode and expect it to boot the 1.25?
    I've not tried it but, based on my experiences with my MDD and its special needs, I don't think that will work.
    If you get a righteous system restore disk set, there is one more hoop: OS9 will not boot if installed on a volume larger than about 195G. I tried installing it on a 250GB drive. It installed and would work in Classic emulation, but would not boot until I wiped that drive and made a modest partition in which OS9 resides.
    ===
    As an aside, never be afraid to start a new topic in these forums. That usually will get you better help faster because some people will not read an addition to a thread that is already months old, like this one. I realize some web forums flame on people who start new threads but that is not the case around here. Tagging on to an existing thread confuses those offering help and dilutes the help that you and the original poster (OP) both deserve.
    I realize that finding how to start a new thread around here is non-intuitive. This link should hep if you encounter what thousands of others have:
    http://discussions.apple.com/ann.jspa?annID=650
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  • XServe with Snow Leopard and Mountain Lion Clients

    Okay, bare with me, as I'm fairly new to the whole Mac Server world. I have learned a whole lot over the last year and I've been able to completely manage our 60 Snow Leopard Clients on our XServe.
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  • IP Address Conflicts - iMac and Airport Express, Snow Leopard and Mountain Lion

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    Is the DHCP assignment being done by your cable modem or your AirPort Extreme?
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    If your cable modem and your AirPort Extreme are both running DHCP servers for the same subnet (which they really should not be allowed to do), they must be set to assign addresses from disjoint pools.

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    Last edited by bdawg (2012-09-21 23:15:37)

    DSpider wrote:
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