How can I boot a Snow Leopard MBP 10.6.5. from an external HD with 10.5

Hi,
I would like to boot a current MBP with 10.6.5. from an older USB disk (IDE) with 10.5 Leopard.
The external disk is a 2.5" 80 GB USB disk with 2 partitions - 10.5. System and 10.4 System. In general the external HD works: file access is possible, applications are running from the external disk but booting does not. The 10.5 partition on the external disk is shown in System Preferences/Start volume, but when restarting there is only a grey screen.
Restarting with "alt" gives me the option between the internal 10.6.5 disk and the 10.5 partition: but after choosing the 10.5. partition the screen immediately freezes.
What do In need to do - anybody an idea?
Thanks in advance,
eric

Deleted by me. Posted on the wrong thread.
-mj
Message was edited by: macjack

Similar Messages

How can I re-install Snow leopard having installed Lion? The disk supplied states that I cannot use the version of 'Install Mac OS X'...HELP!

How can I re-install Snow leopard having installed Lion? The disk supplied states that I cannot use the version of 'Install Mac OS X'...HELP!

None of the instructions usually given for downgrading seems to mention the fact that you will lose some data in built-in applications, including at least Mail. When you installed Lion, your Mail database was converted from the format used by Snow Leopard's Mail to that used by Lion's Mail. There is no way to reverse that conversion. Therefore, you will lose your entire Mail database. If your messages are all stored on a remote server, that may not be an insurmountable problem, but otherwise you'll have to restore from the last backup you made before the upgrade, and then you'll still lose all changes to the database made since that time.
Another fact not often mentioned is that downgrading is usually the worst possible solution to a problem with Lion. But that's the answer to a question you didn't ask.

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:
1. The firmware doesn't allow you to run it.
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

I have Mac OS X 10.5.8. How can I upgrade to Snow Leopard?

I can't find any information here.
Any info would be greatly appreciated.
Thanks

Your machine is likely too dated to run 10.8 at all , or if it does will run slow.
It won't run your PPC based software or hardware drives for external hardware.
10.6 will run your PPC software and likely is best for that machine performance speaking, Software Update to 10.6.8 and stay there.
You better do your research first.
Things to consider before upgrading OS X
Or else get this
Why is my computer slow?
and then have to do this
How to erase and install Snow Leopard 10.6
or this
How to revert your Mac to Snow Leopard
but before you do anything, you really need to do this
Most commonly used backup methods

How can I Downgrade to Snow Leopard and keeping all 3rd party apps?

New to MacBookPro and really happy. With Lion...not so much. I want to downgrade to SL, however, apparently I must reformat the hard drive. Here´s the real question: If I have a backup of my entire HD with the user, docs and all the apps I have installed (on Lion), once I downgrade to Snow Leopard, can I just move all my apps from the back up disk I have made of my Lion-Running hard drive? In other words, How can I downgrade without having to reinstall every single third party app I have?

First, how new is this Mac? A Mac as a rule cannot boot to an older operating system version than that with which it was originally supplied. In other words, if this is a new MBP that came with Lion then you probably cannot get it to boot to SL.
Some applications (and I take it you do mean full "applications" rather than "apps" which are mobile device programs -- it helps to be clear o terminology) can just be dragged from place to place. Others, notably Adobe and Office, install things all over the place and unless you are good at finding hidden files with obscure names in 10 different places you will just have to re-install them.

How can I revert to Snow Leopard on my Air?

I have a macbook air running lion, a snow leopard install CD, and a mac pro also running lion. How do I install snow leopard on my air from that CD? What happened to the utility that did this stuff? Target disk mode requires a firewire port... What am I supposed to do?

Here's a suggestion if you don't wish to look for the utility on your Snow Leopard DVD. Get an 8 GB USB flash drive. Format for OS X and clone your Snow Leopard DVD to the flash drive using your other computer.
Drive Preparation
1. Open Disk Utility in your Utilities folder.
2. After DU loads select your hard 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.
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. 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.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Security button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.
Clone using Restore Option of Disk Utility
Open Disk Utility from the Utilities folder.
Select the destination volume from the left side list.
Click on the Restore tab in the DU main window.
Check the box labeled Erase destination.
Select the destination volume from the left side list and drag it to the Destination entry field.
Select the source volume from the left side list and drag it to the Source entry field.
Double-check you got it right, then click on the Restore button.
Destination means the USB flash drive. Source means the Snow Leopard DVD.

How can I revert to snow leopard

I installed Lion. It took several hours!
I found out after, that several softwares I was currently using do not work any longer (FileMaker, Excel, Word).
Can I downgrade now? Or would it be possible to run both systems on the same machine?
I have previouly saved my disk with Time machine.

You can downgrade, but it's not easy. Search these forums for "revert to snow leopard" for numerous answers.
However, MS Office can be made functional by simply upgrading to Office 2011. Also, my ancient copy of FileMaker Pro 8.5 seems to be working fine in Lion. What version are you using? Of course, the ultimate solution would be to simply upgrade FMP as well. If you're going to upgrade your system, you're going to also have to upgrade your other software from time to time.
To run both systems, you could create another partition on your hard drive with Snow Leopard, and then choose which system to boot into. That would be inconvenient, though. You'd be better off to simply commit to Lion and upgrade your other software or bite the bullet and revert to SL. Of course, if you do the latter, you're stuck with that machine and that system until you ultimately are forced to do the former by hardware failures or whatnot.

HT1338 how can I upgrade to snow leopard

I'm trying to get a new HD camcorder, and it seems that my iMovie is old, so I'm trying to upgrade my Mac software. I'm still running 10.5.8 and I can't find anything anywhere about how to get Snow Leopard or Lion or Mountain Lion or whatever animal is currently the most recent version. LOL
HELPPPPPP !!!
I think I'm so outdated that I can't even download the software, and that I need to go to the Apple Store and get a disc or something????

Aways keep an eye on 'More like this', the column adjacent to your initial post.   You will often find answers and positive leads to your questions there.
Upgrading to Mountain Lion.    Start by buying the Snow Leopard retail disc
10.6.3, then update to 10.6.8 via the combo updater >>>
Combo updater for Snow Leopard.          Mac OS X 10.6.8 Update Combo v1.1
Buying Snow leopard from Apple.        Last I read, you must call them (1-800-MY-APPLE). It is $29 plus tax for family pack and $19 plus tax for a single.     The disc is no longer available through a store.
Before you buy anything, first make sure your Mac is compatible.
Minimum specs for …     Snow Leopard. Mac OS X v10.6 Snow Leopard -         Read the Technical Specifications
                     Mountain Lion. Apple - OS X Mountain Lion - Read the technical specifications.

How can I upgrade to Snow Leopard with a broken cd drive?

I recently bought the Snow Leopard 10.6.3 cd and was looking forward to the upgrade. I forgot my cd drive is broken. How can I get around this? I tried zipping the file on a friends computer and unzipping on my computer (so I could fit the software on a thumb drive). Not successful. Other ideas?

If you have Mac or PC which has DVD drive, Remote DVD/CD drive could work.
http://support.apple.com/kb/HT5287?viewlocale=en_US
http://support.apple.com/kb/HT2129?viewlocale=en_US

How can I open a Snow Leopard Stickies Database on Tiger?

I have a problem. My MBP running 10.6.x Snow Leopard is in the shop getting fixed. In the meantime I am using my backed-up files on an iBook running 10.4.11 Tiger. I desperately need some data from my Stickies on the MPB, where the Stickies Database was created in Snow Leopard. But Stickies on 10.4.11 will not open the database. Any idea how to recover that data?

I just solved my own problem:
Turns out that, when the Stickies app is closed, the StickiesDatabase file shows up in user/Library
Just copy and paste in same location on new computer, 10.6.4 or earlier.
Works like a charm (for me)
thanks

How can I upgrade to Snow Leopard or Lion from Leopard 10.5.8?

I can't find any way to get Snow Leopard from the apple store. It is on Amazon for $100+ and there are lots of fake ''free'' downloads online, but I don't want to use them?
Is there any ways to get to Snow Leopard or Lion from this old opperating system?!
My mac is a 2008 Macbook Pro.
Thank you!

Hi,
I just bought the iphone 5 but have a 2009 Macbook Pro so was running 10.5.8. Needed to upragde to snow leopard then to mountain lion. S.L. is no longer available in stores. The guy in the shop told to cal apple support (0800 048 0408) but was skepitcal. Amazin was quite expensive so I ended up ringing just to check... TOTALLY WORTH IT! Got it for £13, when I would have paid about £70. Apparently they are trying to encourage people to get SL so they can get the icloud.
Ring up! Honestly, their customer serivce was so helpful and lovely. Whole episode has reminded me why I love Apple.

Can I upgrade to Snow Leopard, and then Mountain Lion, on my 2009 MacBook with OS X 10.5.8?

I want to upgrade to Snow Leopard so I have access to iCloud for all my devices. I bought my MacBook mid 2009 and am currently running OS X 10.5.8. Does anyone know if I am able to upgrade before I go and buy Snow Leopard?
Thanks.

You can upgrade from 10.5 to 10.6 with no problems. Any program that runs under 10.5 should run under10.6. See this list for compatibility with 10.6: http://snowleopard.wikidot.com/
You might have to upgrade some drivers for printers, etc.... And you will have to install Rosetta if you have any third party Power PC applications http://www.macobserver.com/tmo/article/snow_leopard_installing_rosetta/
You can order a Snow Leopard 10.6 install disk for $29 from the Apple Store as long as you have at least 1gb of RAM and 5gb of free space on your hard drive. http://store.apple.com/us/product/MC573Z/A?mco=MTY3ODQ5OTY
To upgrade your iLife and iWork. If you only want iPhoto or other single apps from iLife '11 you can get them from the App Store after you've upgraded to 10.6.6. iPhoto, iMovie or Garage Band for $15 each and Pages, Keynote or Numbers from iWork '09 for $20 each.
Once you are at 10.6.8 you can buy Lion for $29 from the App Store if you have at least a model 2,1 MacBook. Lion will require at least 2gb of RAM but really needs 4gb to run smoothly. As for third party programs see this list for compatibility with 10.7 http://roaringapps.com/apps:table
Also Lion doesn't run any Power PC programs. To see if you have any Power PC programs go to the Apple in the upper left corner and select About This Mac, then click on More Info. When System Profiler comes up select Applications under Software. Then look under Kind to see if any of your applications are listed as Power PC. Universal and Intel will run under Lion.
Before Mac switched to Intel processors they used Power PC processors from 1994 to 2005. Power PC 601 through 604, G3, G4 and G5. Applications written for the Power PC processors need the application called Rosetta to run on Intel processors. This was part of the Operating System in 10.4 and 10.5 but was an optional install in 10.6. With 10.7 Lion Apple dropped all support for Power PC applications.

I have inastalled Lion on my Mac Book Air and I have really problems. By application that are not from Apple the processors is 80 degrees celsius warm after 2-3 Minutes from the start of the Apps.How can I downgrade 2 Snow Leopard without 2 loose my Data?

Can I use the Lion licence with my MacBook Pro if I downgraded my Air?

If you are wondering why you are not getting any responses, it is because you have vented a complaint without any details that make any sense or give anyone something to work on.
If you want help, I suggest actually detailing what has happened, with versions of software etc. Anything that would let us assist.
As a start I am guessing that you have not really got the hang of "How it all works". Firstly download the Pages09_UserGuide.pdf from under the Help menu. Read that and view the Video Tutorials in the same place. A good addition would be the iWork 09 Missing manual book and something to help you learn how to use your Mac.
If there are specific tasks you need help with:
http://www.freeforum101.com/iworktipsntrick/index.php?mforum=iworktipsntrick
Is a good resource.
Peter

I've a hand down black MacBook OSX10.5.8 , how can I upgrade to snow leopard, it's 2GHz intel core duo, 1GB 667 MHZ DDR2 SDRAM

According to visit to genius bar, they told me its not support, I gotta buy a new Mac! I don't actually need it, but would like to have iCloud option, bc my iCal doesn't syn with any of my iPhone 4 or iPad 2.

The model 1,1 Core Duo can only run in 32 bit. Lion only runs in 64 bit which needs a Core 2 Duo model 2,1 or better which can run in 32 or 64 bit.
Here's the specs on your MacBook http://www.everymac.com/systems/apple/macbook/stats/macbook_2.0_white.html

How can I boot my PXI controller into real-time without a floppy disk?

My PXI controller is in a lab which has intense magnetic fields that could corrupt the floppy disk used to boot the PXI controller into the LabVIEW Real-Time (RT) Operating System. How can I boot the PXI controller into real-time directly from the hard drive?

If you are using LabVIEW 5.1.2 Real-Time (RT), launch Remote System Explorer and select Disks >> Create Format Hard Drive Disk. If you have LabVIEW 6 RT, launch the Measurement and Automation Explorer (MAX) and select Tools >> RT PXI Disk Utilities >> Create Format Hard Drive Disk (LabVIEW RT 6 has not be released yet). Once you have created the disk, boot the PXI controller with the Format Hard Drive Disk, and this will format the PXI's hard drive and install the real-time OS boot loader. Now you can reboot the PXI without a floppy disk and configure the PXI using Remote System Explorer or MAX. Be aware that this will remove all information from the hard drive, including other operating systems.

How can I boot a Snow Leopard MBP 10.6.5. from an external HD with 10.5

Similar Messages

Maybe you are looking for