Running Snow Leopard from External Hard Drive

I have some teacher software that lion won't run. It was suggested to me to run snow leopard from an external hard drive. I have an external WD hardrive for mac. Can someone share with me on how to do it?
Thanks!

Have a look here
http://support.apple.com/kb/HT1948

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Install snow leopard from external hard drive-terminal problems!

hi everybody ,
i have a big problem :s
wanted to restore and getting "Restore Failure Could not find any scan information... then i've followed some terminal commands..finished restoring and couldn't boot cause i only find Macintosh HD when i use "alt option" when i restart my macbook pro and even if i go to "startup Disk" i can find my partition of the external hard drive but when i click on it nd do retart it's can't boot ...another thing is tht m having a slow start and it's ask for my Password (i've no problem with password it just doesn't ask me to enter it before and i have internet and server failure)
Due to terminal commands?? :((
Plz help :s

"How to install Snow Leopard from an External Hard Drive"
* Launch Disk Utility
* Select the External Firewire/USB device that you want to use as the boot drive for the upgrade
* Click “Partition” from the menu options
* Select 1 Partition, then click “Options” below the partition scheme
* Select the top option for “GUID Partition Table” – it MUST be GUID to be bootable!
* Click OK to create the GUID partition (this will reformat the drive, ie: all data is lost)
* Next, click the “Restore” tab within Disk Utility
* Select your newly made Snow Leopard 10.6 Install DVD image and restore this image to the GUID partition you just created OR…
* Alternatively, you can select the Snow Leopard Install DVD and restore directly from the DVD to the GUID partition
* After the restoration is complete, your GUID partition will now be bootable by Mac OS X!
* Reboot the Mac holding down the “Option” key to pull up the boot loader, select the Snow Leopard install drive you just created rather than your default Mac OS hard drive
* Install Snow Leopard as usual!
Hope this helps!

Using snow leopard on external hard drive w/Mountain Lion OS Mac

I need to use Snow Leopard in order to use some expensive software that will not work in Lion or Mountain Lion. All of our computers have been upgraded to Mountain Lion, whcih doesn't support Rosetta. I was able to install Snow Leopard on an external hard drive and it boots up fine from another computer (that is not mine) that has Snow Leopard as its OS.
But when I boot up from my MacBook Pro (running Mountain Lion) and from my Macbook Air (also running Mountain Lion), I can't seem to do it. I hold the "option" key when starting and I get the option to start from the computer's HD or from the external firewire Snow Leopard drive. When I choose the Snow Leopard drive, it crashes and gives me that black screen with the kernel (?) message in several languages that I need to hold down the Power key to turn off the computer and reboot.
How can I get my MacBook Pro or my MacBook Air to boot up from the Snow Leopard external hard drive? (Once again, it DOES work with a Mac that has Snow Leopard as its OS).

Richard Signes2 wrote:
The question is: How do I start up my MacBook Air (or MacBook Pro) from an external FireWire Bootable hard drive with Snow Leopard on it? When I start up either one with the "option" key pressed, I get the option to start up with the external Snow Leopard hard drive, but when I select it, it crashes, as described above.
You can't if the Mac is a Late 2011 and later, perhaps if it's a Early 2011 (as some came with 10.6 and some with 10.7) and it should be possible for all Intel Mac's earlier than Early 2011.
Also, like what has occurred in the past, Apple does eventually issues a firmware update in later OS X versions so that earlier OS X versions, despite the Mac previously being able to boot from them, won't any longer. However far as I know Apple hasn't done this quite yet, but will one day.
Baring those issues, if you installed 10.6 on a external drive using a machine specific black/gray disk from another Mac, it has hardware drivers for that model/year of Mac only.
If you used the 10.6 white retail disks from Apple, it only has hardware drivers for all previous Intel Mac's that came originally with 10.6.2 or earlier from the factory. Mac's with 10.6.3 or later on the drive from the factory have different hardware drivers, thus not on the 10.6.3 white retail disk.
To find out what OS X version came on your machines, use the free MacTracker and use your model indentifier in the Apple menu More > Info (aka System Profiler)
So for those Mac's that originally came with 10.6.3 or later, machine specific disks must be gotten from Apple, or if your really talented, it's possible to create a univeral 10.6-10.6.8 install disk by combing the 10.6.3 image with the 10.6.8 combo update which will boot on any Intel Mac if the firmware permits and the hardware drivers are compable.
There is a method to bypass the firmware and install on Mac's that are Early 2011/Late 2011 via Target Disk Mode, or via taking the drive out of the machine as some Late 2011's use the same hardware drivers as the Early 2011 machines (only a processor bump basically)
How to revert your Mac to Snow Leopard
For the MacAir, you can install 10.6 via a USB thumb drive, of course provided it has the hardware drivers.
http://www.maciverse.com/install-os-x-snow-leopard-from-usb-flash-drive.html
So in your case you likely should be rather looking at running Snow Leopard in a virtual machine program in Mountain Lion, which MichealLax over at MacRumors has perfected a technique.
Windows in BootCamp or Virtual Machine?
http://forums.macrumors.com/showthread.php?t=1365439

How do I boot Leopard from external hard drive?

I'm currently staring off into space... my 3 month old MBP seems to have finished its painfully long boot and all that appears the Leopard background. The local Mac guru isn't available until Monday but did tell me I need to boot from my external hard drive. Um, how do I boot from external hard drive?
The cause of the problem: inserting flash drive powering up.
Tried safe boot. Only difference was iCal reminder popped up in space.
Mac guru told me do NOT use install disks!
Help!
AR

Apple support has told me that you cannot boot a MBP from an external drive when Leopard is installed on a MBP.
That is just plain wrong.
1) Hook up your external drive. Use FireWire for better performance.
2) Launch Disk Utility and highlight the actual drive icon at the left. Click on the Partition tab.
3) In the Partition section, click on the Options button. Click on the radio button for "GUID Partition Map". This is the option you must use in order for a drive to be bootable on an Intel based Mac. Click OK.
4) Set up your partitions however you want and click the Partition button at the lower right.
From here, you can either clone your internal drive to the external, or install Leopard on it from scratch.

After installing snow leopard my external hard drive won't show up on screen or backup

Afer installing leopard my external hard drive won't show up on my desk top. It also won't backup my hard drive with time machine. I need help.

Try going to finder preferences, general, make sure show these items on desktop external disks is clicked. You can also go to sidebar (same pane) and click it there so it will show when you open your HD. Time Machine>system preferences>time machine>turn it off click select disk, make sure the correct disk is selected, the turn TM back on. Hope this helps.

How to install Snow Leopard onto external hard drive.

I'm currently running on 10.5.8, and I just bought the Snow Leopard installation disc to update to 10.6.3.
My mac has been running on an external hard drive for about a year. The internal just stopped working.
I want to install Snow Leopard onto my external hard drive, but all of my files are on there, and I read that if I do the install, all of the data will be erased.
If I used time machine to back up the files before I do the install, are they at risk of being erased, since they will be back-uped on the external?
This is probably super obvious, but I want to be very careful with this.
Any help is very much appreciated!
^__^

1. The data won't be erased unless a problem occurs.
2. The Time Machine backup should be on a different drive, as drives can fail.
(92634)

How to run data merge from external hard drive?

I attempting to merge a large document (~4,000 records) in CS3. The document that I'm merging the data into is also large (an 8 page newsletter). I have exported the pages of the document as a PDF and the imported them again (therefore minimizing the data/links/etc.) but the amount of memory it was consuming was still crashing the program when I ran it on my computer. I bought a TB external hard drive and would like to run the merge from there so that it is using that memory/RAM instead of my computer's. I moved the indesign file, all the pdf links, and the .csv file that is the data source to the external hard drive. That didn't solve the problem. Is the merge now running from the external hard drive and still not working or is there something further I need to be doing to get InDesign using the external hard drive memory instead of my computer's memory? Any advice would be wonderful, thanks!

I attempting to merge a large document (~4,000 records) in CS3. The document that I'm merging the data into is also large (an 8 page newsletter). I have exported the pages of the document as a PDF and the imported them again (therefore minimizing the data/links/etc.) but the amount of memory it was consuming was still crashing the program when I ran it on my computer. I bought a TB external hard drive and would like to run the merge from there so that it is using that memory/RAM instead of my computer's. I moved the indesign file, all the pdf links, and the .csv file that is the data source to the external hard drive. That didn't solve the problem. Is the merge now running from the external hard drive and still not working or is there something further I need to be doing to get InDesign using the external hard drive memory instead of my computer's memory? Any advice would be wonderful, thanks!

What's the best way to run Logic Pro from external hard drive.

What's the best way to run logic from external hard drive

Hi
Organism wrote:
Logic is designed to run from your Applications folder. I suspect if Logic was moved to an external drive, it might not be able to locate its assets, like loops and libraries.
As long the necessary files are in the correct places on the boot disc, you can run the Logic application itself fom wherever you like. It would not be recommended however, and there would be very little benefit (if any) in doing so.
CCT

Running Final Cut7 from external hard drive with 15" Retina having FCX on it's drive...

Hi All,
I ended up (unexpectedly) having to lay my 15" standard MBP to rest and stepping up to 15" Retina. Problem; coming from Final Cut 7 with many projects and external hard drives for clients with FC7-handled media that still needs to live on for future projects and updates to existing timelines/sequences. I need to install Final Cut X on the Retina but still need to recruit media from these external drives (I have each of my clients buy and external hard drive for their media to "live" on).
My idea is to install FC 7 on an external hard drive and run it from there. The main goal is for the next year or so, to be able to bridge the world between former clients who have years worth of clips and FC sequences/timelines they just update each year, to new clients today.
Thoughts? I really don't want to mess this up.....yikes!
Thanks!
ClemKins

The applications are just going to run faster on your 256GB internal 'drive' than if installed on an external - if, indeed, they COULD be installed on an external (there are a lot of files inserted into you Libraries that the applications need to run).
If you don't have it in your budget to buy some Thunderbolt drives for swap space, I'm assuming that you can allocate swap space on an external (I know that I do with Photoshop)? That would cut down on swap space used on your internal.
256GB should be more than enough - even though I have a 512GB SSD I really am only (now, anyway) using about 140GB on it and I'm running the entire Adobe CS6 suite and quite a number of other drive-heavy apps. So 256GB should be a worry.
As I said, I have all of my apps installed on my internal drive and use two Thunderbolt external drives as 'working' drives - you should be able to do the same with whatever connections you have to your external drives (just will be a little slower than Thunderbolt). Keep your apps on your internal - 256GB is really enough.
Good luck,
Clinton

Cannot boot Snow Leopard from external FireWire drive

I use a Western Digital My Passport Studio 500 GB external drive to back up my MacBook Pro with Time Machine. I had created a 30 GB Leopard boot partition with various utilities and tools; since the small drive goes wherever the laptop goes, I figured it might come in handy to be able to boot the computer in the event something went wrong with its internal 250 GB drive.
Over the weekend, I upgraded the external drive to Snow Leopard, and now it can no longer be used to boot the laptop. The symptoms are truly weird. Holding down the Option key while rebooting does not show the external drive unless I disconnect and reconnect the FireWire cable. The drive then shows up. I select it, and it appears to begin to boot, then it just sits on the gray screen with the little round thingie turning for a long time (five to ten minutes). Eventually, the system boots from its internal drive. This happens regardless of whether I'm connected by means of FireWire 400 or 800.
After spending a lot of time looking at the usual suspects (cables, permissions, PRAM, etc.) I reinstalled Sand Leopard (OK, 10.5) and lo and behold, the drive boots again (though for some reason I still have to go through the disconnect/reconnect routine). Clearly, something in the OS has changed with respect to the way booting from external drives is handled.
On the positive side, I have none of the symptoms described in other threads: Time Machine works flawlessly, and both the boot partition and the Time Machine partition appear on the Snow Leopard desktop every time I connect the drive.
Does anyone have the same issues? Does anyone know of a workaround?
Thanks,
Daniel

Hi,
Working from a MacBook Pro 2.4 (Santa Rosa) with 4gb ram, running OS 10.5.7-
(All external HDs are 7200 rpm)
Shortly after our fresh install of Snow Leopard onto a new but already tested External 1.5 Seagate Barracuda (with the most current firmware), in an OWC Mercury Elite enclosure-
We installed Snow Leopard smoothly to that external HD without any issues, and it booted up from that 1.5T external HD, and worked fine.
Then, still working from the MacBook Pro, I turned on and booted another external HD (a Newertech Guardian Maximus RAID running 10.4.11 via FW800, daisy chained to the 1.5T External with Snow Leopard newly installed.
Again that's MacBook Pro <FW800> Snowy external HD <FW800> 10.4.11 RAID (booted & working from the RAID).
But when I tried to bootup up Snow Leopard, after doing the work on the 10.4.11 RAID-
It would not boot up.
Though Snowy would appear as an available Start Up disk, each time it was selected as the Boot drive,
the Internal HD OS 10.5.7 booted instead.
I changed around the cables and tried repeatedly.
Same result, no Snowy boot.
Even after the OS 10.4.11 external RAID was power down, and disconnected.
After some looking around, I found this forum:
http://discussions.apple.com/thread.jspa?threadID=2136208&tstart=0
Got me thinking.
I tried the USB, and it booted !
I tried the FW400, and it booted !
And mysteriously, at this point- I tried the FW800, and it booted !
And then, the MBP boots seemed to reliably boot from that external, via FW800.
Bizarre.
Snow Cat needs to be taught originally how to find FW800 from the bottom up ?
Turns out, Snow Leopard doesn't like booting,
if the preceding boot was on the 10.4.11 RAID, and work was done with programs there.
So, once again, I repeated this process:
After working with programs on the 10.4.11 external HD,
the MBP would not boot the Snow Leopard external HD,
it defaulted to booting from the MBP internal HD OS 10.5 via FW800.
even though Snowy was selected for Start Up.
This was the case repeatedly.
(It would also boot from the 10.4.11 external RAID, if it were selected for Start Up.)
(In each of these tests below, I only rebooted the computer at each test. I did no work with programs on the various HDs.)
SO, once again, at this point of the process:
I plugged in that Snowy external HD via FW400,
and it booted up fine !
Then I booted up from the Internal 10.5, and tried to boot Snowy via FW800 again.
It worked !
Then I turned on the 10.4.11 RAID external HD, and tried to reboot from the Snowy external HD.
It worked too !
Then I booted from the 10.4.11 RAID, it came up fine.
Then booted from the Snowy, it came up fine.
Then booted from the Internal HD 10.5, it came up fine.
Then booted from Snowy again, it came up fine.
Then I turned off the 10.4.11 HD, booted from Snowy, it came up fine.
Then booted from the Internal, it came up fine.
Then tried Snowy one last time, it came up fine.
Anyway, the issue is:
It works fine-
Except when I do work within the programs on the 10.4.11 external RAID.
Then I have to use FW400 or USB to get it to boot once again . . .
Regardless of whether the other external HD is removed from the system.
It's some sort of flaw, and totally repeatable in testing.
Hopefully, it will be fixed soon.
Howard

Running operating system from external hard drive

I know that is possible, and I have done it before when I have needed to run Disk Utility or to salvage files from an an mountable hard drive, though here is my question. My iMac just ran out of applecare, and I dont know if my boss wants to put the money into repair it yet. I am wondering the draw backs or real issues with running a mac natively off a external fw800 drive. I know its unorthodox, but if the repair of this iMac is allot, which I have a feeling it will be, this might be a a possible option, for a back up computer.

It will be a bit slower but it should work just like booting from the internal disk.
Regards
Captfred

Run Snow Leopard from an externalUSb Drive/Stick

Hello,
I have a 13" Macbook with Snow Leopard installed on it that is failing to boot (grey screen with spinning wheel). I have tried repairing the HD with the SL DVD and it says that I should back up all my files and format/reinstall SL.
I have read that you can boot from an external USB drive/Stick and have followed the instructions so that I can at least recover my files and then reformat the drive and restore my files to the newly formatted HD.
I have been able to install SL on an external USB Drive (and to a stick) but when rebooting it freezes during the "Create Account" screen and I am not able to boot from that External Drive.
Can someone point me in the right direction?

Thank you for your quick response to my post.
I have tried booting the machine off the HD but get the grey screen with the Apple logo, a spinning icon and a status bar underneath that just does not move. I have left in this state overnight and nothing happens, I cant boot from the internal HD.
I have booted the machine holding alt and holding C. When holding alt it list the HD and the external USB. When I boot from the external USB drive it goes thru the start up process of setting up the OS. It asks me for my mobile me info, if I want to set up a wireless connection, and when I get to the create account screen I enter all the information and click enter it hangs for a while and then I get the spinning color icon and it does not move from there.
So to summarize, I am stuck trying to boot from an external drive to salvage my files and reboot and have tried with 2 external USB drives (a 2 TB WD self powered unit and a portable WD 120GB computer powered unit) and a 16 GB DatTraveller USB stick. I don't know if the units are the problem. I have just purchased the 2TB unit a couple of days ago.
I need to clarify that this is a Mackbook 13" not a Macbook Pro so it does not have a FireWire connection and I am desperate to salvage my files.

HT1660 How do I run itunes from external Hard drive?

How do I run itunes from external hard drive. I only have ssd on PC and media is too large to fit

You do not.
iTunes, like all programs is installed on the C drive.
You can store the media on another drive.
Assuming you are moving an existing library from another computer:
Move or Copy the ENTIRE iTunes folder from the old computer to the new computer and put it where you want it.
Install iTunes using the default options.
Hold <SHIFT> while launching iTunes. It will prompt to create a new library or locate an existing library.
Select the option to locate an existing library.
Point iTunes to the iTunesLibrary.itl file in the iTunes folder that was moved from the old computer.

Imac problems loading snow leopard and reformatting hard drive so its fresh

hello im currently running a 2.8 Ghz intel core 2 duo i mac i have apparently downloaded the new snow leopard but my hard drives are all funky i have a 500gb internal and a 1tb external but neither seem to be responding to the new update ?

Does the hard drive appear in finder (on your desktop)? If not, does it appear in Disk Utility (
/Applications/Utilities/Disk Utility.app)? What was the format of the hard drive?

How do I move a partition on my mac hard drive, to an external hard drive so that i can run windows when the external hard drive is connected

How do I move a partition on my mac hard drive, to an external hard drive so that i can run windows when the external hard drive is connected

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Running Snow Leopard from External Hard Drive

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