Installed Snow Leopard successfully ( from dmg) - how can I do a clean install?

Hi,
I have Snow Leopard as a .dmg file that I installed on a USB. I successfully updated the old 10.5 Leopard OS, however, what I would really like to do is a clean install. Does anybody know if this can be accomplished using a .dmg on the USB? I can't find the original Snow Leopard disks that I had.
Thanks,
Chris

As stated in the next to last item in the list on the right, it is not possible to install from a dmg.
Allan

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After installing a new hard drive can I install snow leopard directly from snow leopard disc

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You can install directly, assuming the disk is newer than your computer and not designed for a different Mac, but doing so won't install iLife.
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I just bought a used computer with OSX 10.8 and want to reinstall OSX 10.6.3 Snow Leopard . . . How can I do this?

I just bought a used computer with OSX 10.8 and want to reinstall OSX 10.6.3 Snow Leopard . . . How can I do this?

Alfi94965 wrote:
I just bought a used computer with OSX 10.8 and want to reinstall OSX 10.6.3 Snow Leopard
First off you need to know the model identifier of the machine, not all Mac's can be reverted to Snow Leopard and not all Mac's can use the 10.6.3 Retail disk!
To find the model identifier, boot the machine up and hold the command key and the spacebar, Spotlight appears at the top right corner and type in System Profiler and press Enter/Return.
The model identifier should be something like "MacBook Pro 9,2" or something of that nature.
You also can hold D while the computer is booting on/near a Internet connection for a long time and this loads Hardware Test, which one of the panes will give the required information.
Next you download MacTracker here and look up your machine and it's original operating system.
(Don't click the AppStore version obviously)
http://mactracker.ca/
You may have to right or control click on the program to bypass Apple's Gatekeeper and run the program.
If you have the model identifier and the machine won't boot, then just ask here and we can tell you the information
Now all Intel Mac's issued before July 2011 can install Snow Leopard, but the Mac's released after July 2011 came with OS X 10.7 Lion and the firmware won't boot off the Snow Leopard disk. (however 10.6 can be shoehorned on using Firewire Target Disk Mode and another Mac for some models after July 2011)
Also the 10.6.3 Snow Leopard Retail Disk sold at Apple only works on Mac's that came with 10.4-10.6.2 from the factory.
Any Mac's that originally came with 10.6.3-10.6.8 from the factory need model specific disks from Apple directly, not sold at their online store, you will have to call them with your Mac's serial number and order these disks.
If you get the right disk and have the right machine, then you should be able to insert the disk and hold c down or the option/alt key and boot from the 10.6 disk.
Follow these directions and make sure to erase the ENTIRE DRIVE first in Disk Utility or you will have issues later trying to fix it from the disk.
How to erase and install Snow Leopard 10.6

How can I do a clean install of Mountain Lion?

I have an older MacBook Pro that I'm selling. I upgraded to Mounbtain Lion, but there was not an option to do a clean install (wiping everything clean and starting fresh). I want to do this to make sure all of my data is removed before I sell it. How can I do a clean install of Mountain Lion in order to accomplish this? In the past, from DVDs, it was easy. Thanks!

Budrew wrote:
Sure, but I would imagine that it will be common for people to sell their Macs with upgraded OSs.
That was only OK when you bought the Upgrade DVD and included both the original system discs and the disc you used to upgrade the OS.
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If your system came with Lion and you upgraded to Mt Lion then you remove Mt Lion and reinstall Lion.
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I had iLife pre-installed on my aluminium Macbook 2009 with OSX Leopard on it. My hard drive broke but got most of the info off it and just installed snow Leopard on to a new drive and then downloaded and installed Mountain Lion over it. Now I don't have

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Welcome to Apple Support Communities
Mac OS X doesn't come with iLife applications, so you have to install them manually after installing Mac OS X.
Insert the Applications disc or Mac OS X Install Disc 2 DVD and install iLfe applications. Then, open  > Software Update, and install the latest update. If you want, you can purchase iMovie, GarageBand and iPhoto in the App Store, so you will get the most recent version

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Install or Reinstall Lion from Scratch
If possible backup your files to an external drive or second internal drive.
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Erase the hard drive:
Select Disk Utility from the main menu and click on the Continue button.
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 Erase tab in the DU main window.
Set the format type to Mac OS Extended (Journaled.) Click on the Erase button and wait until the process has completed.
Quit DU and return to the main menu.
Reinstall Lion: Select Reinstall Lion and click on the Install button.
Note: You can also re-download the Lion installer by opening the App Store application. Hold down the OPTION key and click on the Purchases icon in the toolbar. You should now see an active Install button to the right of your Lion purchase entry. There are situations in which this will not work. For example, if you are already booted into the Lion you originally purchased with your Apple ID or if an instance of the Lion installer is located anywhere on your computer.
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How can I do a clean install of Snow Leopard with out losing iLife applications?

I bought my Macbook pro in 2009 and am currently running the Leopard software. I want to do a clean install of Snow Leopard, but I do not want to lose my iLife applications. I lost the DVD's that came with the computer. Is there any way I can do a clean install of Snow Leopard with out losing my iLife applications?
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Any help would be appreciated!

1. Install Snow Leopard normally; this will keep the applications intact. An actual clean installation involves either erasing the partition or creating a blank one, and neither of those will carry the applications over.
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Will it work to un-install Snow Leopard (booting from original disks) and then reinstall, then upgrade without erasing hard drive on iMac?

I have both a bootable backup exernal hard drive and the original system disks. I have read on these support pages that you cannot get snow leopard freshly installed without erasing the whole whole drive since the original installation disks are older than the current updated version. I have also read here that it is possible to get the system newly installed (though it's wise to have a back up of the rest of your files). I need to know which can work. Is there an un-install function after booting from a different source? If I can get the system filess off the main hard drive and then install Snow Leopard from my original disks, then go through the upgrades, and end up with the rest of my files intact, that would be wonderful. I have all the adobe design premium software on the system with their updates and would like to not spend hours and hours restoring it all. And since I don't know where all the little bits and pieces of the Adobe programs get installed, perhaps it won't work anyway?
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I have read on these support pages that you cannot get snow leopard freshly installed without erasing the whole whole drive since the original installation disks are older than the current updated version.
That is incorrect. You can install an older version of the same OS over itself. With Snow Leopard and later, unless you intentionally select to erase the drive, the OS removes and replaces all remnants of the current OS and leaves all of your third party apps, personal files and settings intact.
I have also read here that it is possible to get the system newly installed (though it's wise to have a back up of the rest of your files).
That is the correct information.
Is there an un-install function after booting from a different source? If I can get the system files off the main hard drive and then install Snow Leopard from my original disks, then go through the upgrades, and end up with the rest of my files intact, that would be wonderful.
No, there is no way to remove just the OS files from a drive. At least, not in any manner you could call easy. There are thousands of hidden files and folders related to UNIX. Many apps won't even run correctly, or at all, if they're not on the same drive you are starting up to. So trying to separate your third party apps from the drive the OS is on is not a good idea.
I have all the adobe design premium software on the system with their updates and would like to not spend hours and hours restoring it all.
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In my job, I install Snow Leopard and Snow Leopard Server three or four times a day.
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Am I missing a trick here?

Oddly enough it is working for me. I had some issues initially so I went out and bought ONE 16GB thumb-drive (major vendor) and partitioned into two partitions.
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I hope this helps!

I want to save important files/programs on an external hard drive, delete EVERYTHING on my computer, install snow leopard, and reload everything i saved on to a clean slate. Is this possible/practical?

I was just thinking that it would be better to wipe the entire hard drive clean and reinstall some programs rather than go through and move certain things to the trash. Basically rebuild my software and file collection from the ground up, omitting what is unnecessary. Then again, I have no idea what i'm doing.
My macbook was purchased in late 2008. 2gb RAM. OS X 10.5.6. It's been going very slow lately so i decided i would look up how to improve. Snow leopard was recommended as well as changing my RAM. And so here I am.
I don't have an external hard drive so i was going to just compress all my files and save them to my emac via ethernet. would they be harmed?
also, i have alot of projects in ableton (a music recording/writing program). Would saving and transferring them be just as simple as finding the song? or are other components of a certain song saved in other locations?
sorry this is so lengthy. i should probably stick with something simple but i just want things to run as smoothly as possible for as long as possible
thanks very much

Here's some info that may be helpful.
Installing Snow Leopard: What you need to know
http://www.macworld.com/article/1142454/install_snow_leopard.html.
You should get a Firewire connected hard drive and backup your MB's HD to it. That way, if something goes wrong during the installation, you can recover your current sytem, apps and files. After the SL install, you can use the external HD for frequent backups.
 Cheers, Tom

How can I do a clean install of OS?

Just bought a 15" MacBook Pro. Did a migration from a previous machine. Doing the migration screwed something up. Long story. Upshot is, I want to wipe out the system and start with a clean slate.
I inserted the Mac OS 10.6 DVD while machine was running and the machine ejects the disk after about 90 seconds with no error message.
Also tried booting with the disk in. Same result.
I assume that there's a way to do a clean OS install using the disk, right?
How can I get the machine to read the disk (which I have handled very carefully and which appears flawless)?
Current OS installed on machine: 10.6.1.
Thanks,
Ethan

hey ebdb,
try holding down the option button while booting up and then choose the boot up from the disk. Make sure you press the option key right after you hear the bong sound at start up.

I just install snow leopard, and quicktime wont open or do anything, i just install snow leopard, and quictime wont open or do anything

hello i just install snow leopard, and it seems that it did not istalled ok, and when tried to open quicktime it wont do anything

Have you updated it by downloading the Combo updater.
http://support.apple.com/kb/DL1399

How can I do a "clean install" Snow Leopard?

Think I have corrupted the system, even though Disk Utility says it it fine. I have upgraded to 10.6.8, but only have the DVD 10.6.
Have inserted the DVD and tried to reinstall the base system about 5 times - all failed - came up with failure notice "could not instal support files" (or similar)
Can I delete/modify the existing system folder to allow it to complete the reinstall? Tried swearind at it, but that did not work - any suggestions welcome.
Dunky20

Clean my Mac is best left dumped. And it doesn't have any functionality like that.
Universal applications don't need third-party assistance - they contain both Intel and PowerPC code.
Applications which were built for PowerPC processors only can mostly still run in Snow Leopard under Rosetta, but unlike Leopard, in SL you need to select Rosetta in the custom installations as it doesn't install by default.
Your Epson software will need updated drivers for SL - the original ones probably won't work (that goes for a large no. of printers and scanners)
Your problem is most likely the pirated installer.

I have a mac book 10.6.8 that has been upgraded to Snow Leopard (latest version.) How can I upgrade to mountain lion with 1GB of memory? When I go to buy it, it says that it's not compatible with my Mac but my Mac has all of the qualifications.

If anyone has any idea I'd really appreciate it. I just bought the iphone 5 and recieved the new nano as a birthday gift and now I'm up a creek without a paddle b/c I can't plug them into my laptop without the new itunes that runs on Mountain Lion.
Please help, I'm not very tech savvy.

You don't need anything higher than OSX 10.6.8 to run iTunes 11. iTunes system requirements - http://www.apple.com/itunes/download/
You can't upgrade without more RAM.
MacBook upgrade possibilities - https://discussions.apple.com/message/19577869 - "The Early 2006 model 1,1 Core Duo can only run a maximum of 10.6 Snow Leopard. The models Late 2006 Core 2 Duos 2,1 through Early 2008 4,1 can only run a maximum of 10.7 Lion. The Late 2008 model 5,1 Aluminum Unibody through the Mid 2010 White Unibody model 7,1 can run 10.8 Mountain Lion."
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Since installing Snow Leopard 10.6.8 I can't print checks on Quicken 2006. I also discovered that my M.S. Word 2004 freezes and won't work when I try to "save as".

Since installation of Snow Leopard 10.6.8 a week ago, I have not been able to print checks on Quicken 2006.
Now I find that Word 2004 will not "save as" and freezes.
Any help?

Unfortuantely you are victim of bad timing. Apple did release a followup security update that fixes those issues. You can download it from:
http://support.apple.com/kb/DL1489
If issues still persist, the tip here:
http://snowleopard.wikidot.com/h-n
May help your Microsoft Office issue as far as duplicate font clearing.

Installed Snow Leopard successfully ( from dmg) - how can I do a clean install?

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