Reinstalling Snow Leopard over Lion?

Few days back i hve downloaded mac lion "Mac OS X 10.7 (11A511)" from a torrent site.
But now when i m trying to reinstall snow leopard from the installation CD which i got along with my macbook then intallation does not begins.
Following error caution appears while intallation "You can't use this version of the application Install Mac OS X with this version of Mac OS X."
Plz tell me how to reinstall snow leopard and plz tell me teps too as it will help me a lot.

Boot up from your Snow Leopard DVD. Launch Disk Utility from the Utilities menu. Erase your hard drive. Then reinstall Snow Leopard. Restore your personal data from backups. Reinstall your apps from their original install discs, or from fresh downloads from trusted sources. No more torrent sites for you.

Similar Messages

How can I reinstall snow leopard over Lion OS

Ever since I installed Lion OS, my Imac has been absolutely uncontrollable. Programs opening upon start up that shouldn't open, lock ups, freezing system. How can I uninstall Lion and reinstall my Snow Leopard?

You have to quit, not just closing open documents, the programs when you shutdown or they will Resume, by default, when you startup.
The feature can be disabled here by unchecking:
And uncheck when shutting down:

Can I install Snow Leopard over Lion to install old software after hard drive crashed?

My hard drive crashed and I lost everything. I have a new hard drive, but when the repair shop installed my operating system, they installed Lion and I no longer have my prior updates. My computer had been updated a few times. I have a lot of software that only can be installed up to 10.7 such as Adobe Photoshop Elements 10, Office Mac 2011, etc. I was wondering if I installed Snow Leopard over Lion, would I lose Lion? Should I install Snow Leopard and then Lion again? I don't want to damage my like new computer and I don't want to have to go out and buy all new software. Is there a solution? Thanks in advance!

Sounds complicated! If I repartition the drive and install Snow Leopard onto the blank volume, will Lion still be there? Or, will the computer basically have two operating systems that I have to go back and forth from. Is this something a novice like myself can do?

I accidentally downloaded lion. I did a timemachine back-up and tried to reload snow leopard. It will not accept. How do I re-install snow leopard over lion?

I accidently installed lion on my mac book pro. I did a time machine back-up. When i try to re-install snow leopard, it won't take. Any suggestions on how to install snow leopard over lion?

Accidentally, eh? How, might I ask?
Downgrade Lion to Snow Leopard
1. Boot from your Snow Leopard Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
4. Quit DU and return to the installer. Install Snow Leopard.
This will erase the whole drive so be sure to backup your files if you don't have a backup already. If you have performed a TM backup using Lion be aware that you cannot restore from that backup in Snow Leopard (see below.) I suggest you make a separate backup using Carbon Copy Cloner 3.4.1.
If you have Snow Leopard Time Machine backups, do a full system restore per #14 in Time Machine - Frequently Asked Questions. If you have subsequent backups from Lion, you can restore newer items selectively, via the "Star Wars" display, per #15 there, but be careful; some Snow Leopard apps may not work with the Lion files.

Is it possible to reinstall Snow Leopard, removing Lion, without reformatting the hard drive or losing data?

Since I've installed Lion on my early 2009 model iMac, it runs really slow and sometimes is unresponsive. I'm thinking of reinstalling Snow Leopard, removing Lion, but want to know if anyone has done this and experienced any problems or data loss.

samberl wrote:
Reinstalling your OSX is a very simple exercise. I just would not do it from a TM backup.
He already has Time Machine backups.
Reformat, reinstall OSX Snow Leopard and then restore your applications, settings and user directories
You can do most of that, but "complex" 3rd-party applications (typically, ones that came with their own installers) must be reinstalled from the original discs. See Transferring Applications for details.
And don't restore the default Apple apps -- most (or all) of the Lion versions won't work on Snow Leopard.
Other apps (iLife, iWork, 3rd-party) that were updated or purchased after the Lion installation also may not work on Snow Leoaprd.
In addition, there will be problems with some Snow Leopard apps that won't work with the different file/folder structure used on Lion. Mail is one, for sure.
Much faster than TM machine,
Should take about the same time as from a clone.
you should be up and running in an hour or two.
Depending on how much there is, and especially how many complex apps, that may be rather optimistic.
Save yourself a bundle by not buying a new iMac.
Absolutely (although that didn't seem serious).

Trying to re-install Snow Leopard over Lion and Macbook Pro is beeping like a memory failure

I installed Lion on my work 15" MacBook Pro i7 to give it a go, and it's not working with the system we use for Active Directory login, so I need to roll back to Snow Leopard.
I don't have a Time Machine backup, but I have pulled all the data I need from the machine, and have wiped the hard disk ready to reinstall Snow Leopard.
I have a retail copy of Snow Leopard that I've recently used successfully for fresh installs on other machines, but now once I insert the DVD into this machine that's had Lion on it, it's not responding and just making alarming BEEP BEEP BEEP noises.
I googled that and it might be bad RAM (possible, but unlikely? the machine has been running very well up until now)
I've wiped the PRAM, but the instructions for wiping the SMC are a bit cryptic for these machines ...
Does anyone have any clues as to what might be causing this? A firmware issue of some sort?
Maybe the hidden EFI partition on the drive won't let you install Snow Leopard over a disk that's had Lion?

Might be some useful info here:
http://forums.macrumors.com/showthread.php?t=1175934
" I used target disk mode to install Snow Leopard on its partition. I used a friends Macbook Pro, but I put my machine into target disk mode and ran the installer from his user account and optical drive. From a couple things I read online, it seems that Apple recommends putting the other machine in target disk mode and doing it the other way around. I guess some critical files might not have been installed? I also used a retail copy of Snow Leopard instead of my grey recovery disk, so that might be it too. "
"Your machine is newer than the retail copy of Snow Leopard. Use the restore disks it came with.
The installation will need to be done from your machine. You may need to do a net install, so look at "Remote Install Mac OS X" in Utilities."
I'm currently installing from the macbook firewired to the other machine as recommended so hopefully that might help

Reinstall of Snow Leopard over Lion

Alright. So I'm currently using a mid-2010 MacBook Pro 13inch. I was initially using Snow Leopard which came bundled with the system, and shortly after upgraded to Lion through the upgrade path instead of a clean install. After a variety of issues, I partitioned my MacBook Pro into 2 partitions, the 1st partition being the main OS and the 2nd partition being a simple storage area for music, movies, etc. During a recent trip, my MacBook basically crashed and would not start properly.
I'm now stuck with a major problem. As I only have the Snow Leopard DVD, I only made a notable version of the Snow Leopard OS on a USB, and I did not ever bother to make a Recovery USB drive with Lion. After attempting to access the hard drive from the bootable USB, I've discovered that the computer cannot seem to connect to the internet, meaning that the online recovery mode is not an option, and neither is the Recovery USB, as it will only work if my machine created it.
So now, I'm left with a few major questions, I'm aware that Snow Leopard had an archive & install feature built-into the install process. Is this still preserved in Lion? If I manage to find some way to re-install Lion onto Partition 1, will the user data be preserved? What are the chances that my photos, music, etc (user data) will be erased or lost?
For those curious as to why I am not simply giving this in to Apple Support, in my current residence (Singapore), there is no official apple store or support center, it seems to be made of third-party contractors authorized by Apple. There have already been cases of tech support abuse here, so I would rather not put my data in their hands.
UPDATE: I am currently attempting to restore a Lion InstallEMD.dmg image from one USB onto another. I plan to do this through DiskUtility while booting into the Snow Leopard Install DVD I currently still possess. Hopefully, I will have a USB capable of installing Mac Lion on other computers (Apparently, some users have been able to get this method to work). I will update this thread with my results in a couple of days. In the meantime, I would appreciate any input! Also, if any users out there have a spare Mac to test these methods, could you try and share your results?

Note that Snow Leopard does not have an Erase and Install option.
Downgrade Lion/Mountain Lion to Snow Leopard
1. Boot from your Snow Leopard Installer Disc. After the installer
      loads select your language and click on the Continue
      button. When the menu bar appears select Disk Utility from the
      Utilities menu.
2. After DU loads select your hard drive (this is the entry with the
      mfgr.'s ID and size) from the left side list. Note the SMART status
      of the drive in DU's status area. If it does not say "Verified" then
      the drive is failing or has failed and will need replacing. SMART
      info will not be reported on external drives. Otherwise, click on
      the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions
      from the drop down menu to one. Set the format type to Mac OS
      Extended (Journaled.) Click on the Options button, set the
      partition scheme to GUID then click on the OK button. Click on
      the Partition button and wait until the process has completed.
4. Quit DU and return to the installer. Install Snow Leopard.
This will erase the whole drive so be sure to backup your files if you don't have a backup already. If you have performed a TM backup using Lion be aware that you cannot restore from that backup in Snow Leopard (see below.) I suggest you make a separate backup using Carbon Copy Cloner.
If you have Snow Leopard Time Machine backups, do a full system restore per #14 in Time Machine - Frequently Asked Questions. If you have subsequent backups from Lion, you can restore newer items selectively, via the "Star Wars" display, per #15 there, but be careful; some Snow Leopard apps may not work with the Lion files.
Make Your Own Mountain/Lion Installer
1. After downloading Mountain/Lion you must first save the Install Mac OS X Mountain/
    Lion application. After Mountain/Lion downloads DO NOT click on the Install button.
    Go to your Applications folder and make a copy of the Mountain/Lion installer. Move
    the copy into your Downloads folder. Now you can click on the Install button. You
    must do this because the installer deletes itself automatically when it finishes
    installing.
2. Get a USB flash drive that is at least 8 GBs. Prep this flash drive as follows:
a. Open Disk Utility in your Utilities folder.
b. After DU loads select your flash drive (this is the entry with the mfgr.'s ID and size) from the left
      side list. Click on the Partition tab in the DU main window.
c. Under the Volume Scheme heading set the number of partitions from the drop down menu to one.
      Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the
      partition scheme to GUID then click on the OK button. Click on the Partition button and wait until
      the process has completed.
d. Select the volume you just created (this is the sub-entry under the drive entry) from the left side
      list. Click on the Erase tab in the DU main window.
e. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the
      button for Zero Data and click on OK to return to the Erase window.
f. Click on the Erase button. The format process can take up to an hour depending upon the flash
     drive size.
3. Locate the saved Mountain/Lion installer in your Downloads folder. CTRL- or RIGHT-click on the installer and select Show Package Contents from the contextual menu. Double-click on the Contents folder to open it. Double-click on the SharedSupport folder. In this folder you will see a disc image named InstallESD.dmg.
4. Plug in your freshly prepared USB flash drive. You are going to clone the content of the InstallESD.dmg disc image to the flash drive as follows:
a. Double-click on the InstallESD.dmg file to mount it on your Desktop.
b. Open Disk Utility.
c. Select the USB flash drive from the left side list.
d. Click on the Restore tab in the DU main window.
e. Select the USB flash drive volume from the left side list and drag it to the Destination entry field.
f. Drag the mounted disc icon from the Desktop into the Source entry field.
g. Double-check you got it right, then click on the Restore button.
When the clone is completed you have a fully bootable installer that you can use without having to re-download Mountain/Lion.
Note: The term Mountain/Lion used above means Lion or Mountain Lion.
As an alternative to the above (you still have to do your own download of Lion/Mountain Lion) you can try using Lion DiskMaker 2.0 that automates the process of Steps 2 through 4.

I had erase my hardrive and need to reinstall OS X, do I need to reinstall Snow Leopard/mountain lion first before Maverick will take

I had to erase my HD, I have Snow Leopard and Mountain Lion was added for an upgrade after that, now when I try to download the OS X, my HD looks like it going to take it, then it goes no where. And now what is showing up is OS X Maverick for a download, which I didn't even know it existed until I had to down load. I am wondering will I have redownload Snow Leopard or Mountain lion before the OS X Maverick will download.
thank you

Well, you can do an erase and install via the Recovery HD:
Install or Reinstall Mavericks or Mountain Lion from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
OS X Mavericks- Erase and reinstall OS X
OS X Mountain Lion- Erase and reinstall OS X
OS X Lion- Erase and reinstall Mac OS X
Note: You will need an active Internet connection. I suggest using Ethernet if possible
            because it is three times faster than wireless.
Booting From An OS X Installer Disc
1. Insert OS X Installer Disc into the optical drive.
2. Restart the computer.
3. Immediately after the chime press and hold down the "C" key.
4. Release the key when the spinning gear below the dark gray Apple
      logo appears.
5. Wait for installer to finish loading.
Clean Install of Snow Leopard
Be sure to make a backup first because the following procedure will erase
the drive and everything on it.
     1. Boot the computer using the Snow Leopard Installer Disc or the Disc 1 that came
         with your computer. Insert the disc into the optical drive and restart the computer.
         After the chime press and hold down the "C" key. Release the key when you see
         a small spinning gear appear below the dark gray Apple logo.
     2. After the installer loads select your language and click on the Continue
         button. When the menu bar appears select Disk Utility from the Utilities menu.
         After DU loads select the hard drive entry from the left side list (mfgr.'s ID and drive
         size.) Click on the Partition tab in the DU main window. Set the number of
         partitions to one (1) from the Partitions drop down menu, click on Options button
         and select GUID, click on OK, then set the format type to MacOS Extended
         (Journaled, if supported), then click on the Apply button.
     3. When the formatting has completed quit DU and return to the installer. Proceed
         with the OS X installation and follow the directions included with the installer.
     4. When the installation has completed your computer will Restart into the Setup
         Assistant. Be sure you configure your initial admin account with the exact same
         username and password that you used on your old drive. After you finish Setup
         Assistant will complete the installation after which you will be running a fresh
         install of OS X. You can now begin the update process by opening Software
         Update and installing all recommended updates to bring your installation current.
Download and install Mac OS X 10.6.8 Update Combo v1.1.

Installing snow leopard over lion

I just bought a MBP two days ago with Lion preinstalled and i want to install snow leopard.
i have the retail dvd of SL but after it starts booting from DVD it appears the "You need to restart your computer. Hold Down the Power button for several seconds or press the Restart button"
http://img149.imageshack.us/img149/7792/pict0017lo8.jpg
the dvd works ok in another older MBP 2008.
how can i install SL?

Two things,
First Mac's can't c or option boot off install disks that the OS isnt' designed for it or doesn't have the hardware drivers required on the disk.
Second the grey disks are machine model specific, meaning you can only use them with another exact model machiine.
Thrid Apple restricts booting off of earlier OS X install disks in the firmware, but if the OS gets on the drive and it works for the hardware, it will run. But not well on all machines, but yours is likely going to be fine.
So you want to get 10.6 on a factory 10.7 Mac, it's possible if Apple hasn't done any changes lately, your likely going to need another Mac that can boot off the 10.6.3 disks and apply the 10.6.8 combo update together so the drivers are together, then imaged to a wiped hard drive or partition using Firewire Target Disk Mode and another Mac.
"The Proceedure" is here and there are links to discussions and updates all over the web.
https://discussions.apple.com/thread/3264421?start=0&tstart=0
You also may need to read my post about restoring Lion before you erase the disk, you need to copy the Lion Recovery Partiton first with the Lion Disk Assistant. Cloning will also help a LOT.
https://discussions.apple.com/message/16276201#16276201

MacBook air reinstall snow leapord over Lion - back to how I bought it???

Wondering what the heck is going on with my MacBook Air end 2010 model. I want to wipe it. Reinstall the correct software and give it away. Nothing is allowing this seemingly simple pricess to take place.
I have Lion installed on it now - seemingly to cause of my frustration.
Using the disc share on my iMac, it wont let me install snow leapeard. Using the included key drive, it wont let me use any erase features OR install on the 64 gig SSD.
Seriously?????
I need help. bad.
thanks

Drive Preparation
1. Boot from your OS X Installer Flash Drive. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed.
4. After erasing the drive quit DU and return to the installer. Install Snow Leopard.

Installing Snow Leopard over Mavericks

I messed up my Mavericks installation by using CleanMyMac, and cannot user software update, download from the App Store, use Preview or a number of different apps. System Restore does not work for some reason, maybe CMM messed that up too.
I am going to reinstall Snow Leopard, then redownload Mavericks. And never use CleanMyMac again!!!
I cannot erase my hard drive, the button is grayed out. Can I just reinstall Snow Leopard over Mavericks - I don't care about backing up any data.
Thanks

If you have the Snow Leopard install disks you can proceed as described above. It makes no difference that the Mac came with Leopard (you just can't install a system older than the one the Mac came with). However you will need to erase the disk: you can't install an older system over a newer one.

Anyone else had trouble getting RID of Mt Lion? I was shocked to learn that I could NOT run some of my software on it and attempted (with online help) to reinstall SNow Leopard. My computer is now in the hospital! I should have been told beforehand.

I 'upgraded' to Mt Lion over the weekend. It seemed very slow, and sluggish. Within a day I realized also that my Reunion program would not work,
my Quicken would not work, and who knows what else. I kept getting alerts saying that I could not use any PC programs. So, I decided to go back to Snow Leopard - I spent two and a half hours on the phone with two very capable people, then was told that I'd have to take it to an Apple Store. I DO have
extended warranty but a lot of good THAT does! Besides, our nearest store is 160 miles away! So, I took it to our local authorized dealer. It is currently
being worked on, and the minimum will be $189! Fortunately, Time Machine was being backed up by my external hard drive. But, I just received a
call and they can't make my password work to get in! Somehow that has changed back to an old one I don't remember!
MY COMPLAINT: When speaking with a rep about the feasibility of downloading Mt Lion, not ONCE did anyone tell me that I 'might' have these
problems. I NEVER would have upgraded! Now I just want my computer restored to USABLE -

What an unfortunate story.   I hope you will quickly get things back to normal.
To be fair though, there has been quite a lot written about the effects of mountain Lion and the loss of Rosetta, as one example.   I am wondering just how much research you did before buying.
But on the brighter side, you can wipe Mountain Lion and reinstall Snow Leopard with not too much trouble.   It would have been much worse had you bought a new machine with M.L. pre-installed and then found your programs wouldn't work.
Message was edited by: seventy one

I have installed mountain lion on my macbook pro ,but it made my mac very slow. Would someone please tell me how to uninstall this one and reinstall snow leopard?

Hello,
I have installed mountain lion on my macbook pro ,but it made my mac very slow. Would someone please tell me how to uninstall this one and reinstall snow leopard? I tried to do it by my original CDs but macbook pro didn't let me to do it.
Thanks

It would be easier to just fix whatever is making your machine slow.
I wrote a little diagnostic program to help show what might be causing these problems. Download EtreCheck from http://www.etresoft.com/download/EtreCheck.zip, run it, and paste the results here.
Disclaimer: Although EtreCheck is free, there are other links on my site that could give me some form of compensation, financial or otherwise.

Reinstalling snow leopard after mountain lion

I am selling my older imac. I have wiped the drive and I want to reinstall Snow Leopard, the operating system it came with. The machine was once upgraded to Mountain Lion. I have the original Snow Leopard disc. I can't seem to reinstall Snow Leopard. Suggestons?

Boot from install DVD for Mac
Erase disk with Disk Utility
Reinstall from DVD
Allan

Can I back up computer with time machine on lion then reinstall snow leopard and restore from backup safely

Can I back up computer with time machine on lion then reinstall snow leopard and restore from backup safely?

If your machine came with Snow Leopard or earlier and you have your install disks, yes, you can reinstall SL. However, you will need to erase the entire hard drive so you will lose all your files. Also note that there are some apps (such as Mail) which can't be downgraded "automatically" such as with a restore from Time Machine. Here is some info on TM:
http://pondini.org/TM/14.html

Reinstalling Snow Leopard over Lion?

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