Installing OS X Snow Leopard on External Drive Error

Hey,
I recently upgraded my Late 2010 MBP to OS X Lion and am trying to install OS X Snow Leopard onto an external hard drive and keep getting a strange error message.
You can't use this version of the application Install Mac OS X with this version of Mac OS X.
You have install Mac OS X 23.1
I'm using a Snow Leopard disk which I got from Apple.
Any thoughts on how I can get around this?

Had no luck,
Mac just sat loading for a few minutes and kept getting the "Your computer needs to restart. Hold down the power button" message.
Any other thoughts?
Disk is clean, no scratches and opens up perfectly in Finder.

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Why can't brand new MacBookPro9,1 (OEM Mountain-Lion) boot from Snow Leopard on external drive, or internal partition?

Why can't brand new MacBookPro9,1 (OEM Mountain-Lion) boot from Snow Leopard on external drive, or internal partition?
Is this because of hardware changes? Or firmware changes? Or is it just and Apple Inc. administrative fiat?

@Steve Holton: Sorry Steve, but you're wrong about that one . I'm using 10.8 (purchased and downloaded) on the internal HD of this MBP8,3 (2.2 GHz, 17"), and I am also able to boot into 10.7.4 and 10.6.8 from external FW800 partitions.
However, I DO have problems with my MBP9,1. It came with 10.7.4 installed and ran fine. Then I purchased and installed 10.8. It ran fine but could no longer boot from 10.7.4 on an external partition. I then reinstalled 10.7.4 on the internal HD and discovered that it is still unable to boot (even 10.7.4) from an external FW800 partition.
One of Apple's Senior Support Advisors has done some remote troubleshooting but the case is still open and unresolved. An earlier Apple Support case suggested that when, I installed the downloaded copy of 10.8, there had been a "firmware update" (behind the scenes) that is now causing the problems with booting from my external partition(s). This apparently is "a bug": it is not what is supposed to happen.
So - I believe - "the problem" really has nothing to do with hardware capability. It is strictly about Apple's strategy for "managing its future customer base". If you don't like it - use something else - I am seriously considering Ubuntu as an alternative.
If there's a hidden caveat in all this it's probably "Read Appple's Licence Agreement VERY Carefully".

Can't Install Snow Leopard on external drive

Hey Mac Addicts,
I'm trying to install Snow Leopard on an external drive (Lacie Triple Rugged, FW800 USB3.0) but keep on getting "Installation failed, can't copy the support files.
My drive is partioned in to 5x100GB partitions, GUID partition scheme. I boot from my installation disk, choose my partition and hit install. The DVD spins and spins and eventually give me a failure. I've tried not installing the custom options (Quicktime 7, Rosetta and have even unchecked X11) but still get the same.
The MacBook Pro I'm trying this from is running 10.6.8 and previous successful attempts at doing this were from 10.6.4, I'm thinking this is the issue, but would rather not have to clean install my machine and try again.
If anybody has any idea's that'll be marvellous, as I am a little confused and lost, especially as I've done this before.
All the best and thanks in advance.
BigMik

Two things,
1: Use FIrewire
2: Use Disk Utility to first Erase with Security Option Zero All Data, the entire drive, then setup the partitions
3: If it doesn't work, then increase the size of the 10.6 parittion or reducing the partitions until it works.
4: Also do all this from the Disk Utility on the internal drive, then try again from the 10.6 install disk. Apple might have pulled something.
Also you can clone your present OS X 10.6 partition using the donationware Carbon Copy Cloner, however the external partition needs to be large enough for all the contents (recommended)
https://discussions.apple.com/message/16276201#16276201

Installed OS X Snow Leopard on external HDD, now won't allow me to delete files from Mac internal drive

Hi,
I am stuck! My 1 TB iMac 27" decided to stop booting up and would only stay at the grey screen with the apple, gear turning and progress bar. When it got to a certain point on the progress bar it would shut down. Thanks to so many helpful people and their experiences I was able to try many different things including (Command + S, typing /sbin/mount -uw / enter , chmod 775 / enter, logout enter, then rebooting holding down Command + V) and (Reinstalling OS X and using Disk Utility to repair - came up with Disk can't be fixed).
Nothing worked until I read a couple of very wise answers who said "Your hard drive is not dead, but too full...keep at least 10% free at all times". I was down to about 1% (ooops!) Thankfully hubby had bought me an external HDD for Christmas, onto which I installed OS X and being connected to my iMac, it recognized my internal Macintosh HD and all my files are there. Phewww! But I don't want to use my external HDD as my startup disk, I wan't to keep my Macintosh HD for startup but it is too full to repair and select as startup.
My problem is that I cannot delete files from Macintosh HD, and I've tried to unlock files/folders but they don't seem to be locked. But when I drag them to the trash can it says "The item ... can't be moved to the Trash because it can't be deleted." Again, many helpful answers online, but nothing is working. I have 2 Finder windows open, one with external HDD (new startup disk), and old HDD (Macintosh HD) but all items in Macintosh HD can't be altered or deleted (right click doesn't highlight to change the name). So if I can't delete my files, I can't reinstall OS X and repair disk and select it as my startup disk. I'd be so thrilled if someone can help me. I have tried unlocking folders, and I downloaded 'Trashit'. Neither worked, so I figure because it has the little pencil crossed out on the menu bar that it is protected somehow...I just don't know how/what to do. Thanks

Ok, so I'll try set it out a bit clearer than my first post,
This is what I've done, and the results:
1. My son unplugged working iMac Mac OS X Snow Leopard 10.6.2, 1TB with only 11GB available space
2. Turned it on and got the white screen, apple, turning gear and load-up bar
3. Turned Mac off and waited 1/2 a minute.
4. Turned Mac back on...(same as 3.), tried again many times
5. Began searching internet for answers (see original post)
6. Found answers and did the following:
               1.     Put OS X installation disk into drive
               2.     Attached External Hard Drive
               3.     Installed OS X onto External Hard Drive (With a different name & password to original HDD)
               4.     Found Macintosh HD still worked so tried to delete files only to get message saying                                           files couldn't be deleted (see original post)
I've tried changing the permissions in 'Get Info' and this is what happens:
1.Right click Macintosh HD - says "You can only read"
                                                  Name: System - Read & Write
                                                             Admin -   Read & Write
                                                             Everyone - Read only
2.Click on padlock to unlock - doesn't turn black to be able to change anything
3.Check the box "Ignore ownership on this volume" (someone else advised to do this)
4.Name changes to 'mydrive (Me)'
5.Lock padlock and Name still says mydrive (Me) but still 'You can only read'
I don't know what is wrong or what to do, but perhaps you are right LowLuster, that because I named them different names it is protected in some way.
My thought now is to copy all my files to the external HDD and then erase and install again on my internal HD, but I really need my calendar, emails etc from my old HD and not sure they can be found on the old HD to copy over.
Still stuck!

Cannot install Snow Leopard onto external drive

I'm attempting to install Snow Leopard on a second drive, an external bare drive in an Icy Dock enclosure connected to a MacPro (running 10.6.6) via serial port. Apple Disc Utility confirms that the external drive (a Seagate 325gb) has a partition map scheme GUID Partition Table. SMART Status is not supported. Connection Bus reads as SCSI but it's connected with a serial cable.
I'm able to perform the first part of the install by selecting the external drive but when I have to restart and complete the install from the original Snow Leopard disc (10.6), the external drive no longer shows up. I've tried several times and have restarted the Icy Dock external drive enclosure.
Any ideas? Thank you.

Not necessarily. Use a backup utility so that you can deselect all the data from within your Home folder as well as third-party applications in order to create a bootable disk but without some of the excess. Any of the following should be suitable:
Backup Software Recommendations
Carbon Copy Cloner
Data Backup
Deja Vu
Silver Keeper
MimMac
Retrospect
Super Flexible File Synchronizer
SuperDuper!
Synchronize Pro! X
Synk Pro
Synk Standard
Tri-Backup
Others may be found at VersionTracker or MacUpdate.
Visit The XLab FAQs and read the FAQ on backup and restore. Also read How to Back Up and Restore Your Files.
Message was edited by: Kappy

Can't boot snow leopard from external drive

I have a copy of snow leopard installed on a separate usb hard drive which I use to run some PowerPC programmes under rosetta. I can attach this USB drive to my Mac Pro and also to an Intel Macbook and choose to start up on this external drive without any issues. However when I try restarting my new 2011 iMac on this external usb drive the machine crashes every time with a kernal panic. Is this problem unique to me or does everyone else have this issue with new iMacs. Mine is a 27" 3.4ghz i& with 12ghb ram installed running 10.72. Is their soemthing I can do to resolve this problem?

I have now solved the problem of being able to boot from either Snow Leopard or Lion on a new Mid 2011 iMac. This is how I did it.
1. Attach an external USB drive to an earlier Mac or borrow one from a friend. In my case I used my 2009 Unibody Macbook (which has Lion installed on it but does allow you to install Snow Leopard on an attached device) Put the Snow Leopard install disc in this machine and tell it to install Snow Leopard on your attached USB Drive.
2. Start up the Macbook (or whatever machine you are using) and get it to restart on the attached USB drive so that it boots up in Snow Leopard. Then when Snow Leopard is up and running on the attached external drive, do a software update to bring it up to 10.68 (the current version). This step is important as I found that if I plugged in the external USB drive into the iMac with only operating system 10.6 installed it would cause a kernal panic on start up when I choose to start up on the external USB drive.
3. With Snow Leopard updated to system 10.68 you can now plug it into your iMac and restart the iMac booting into Snow Leopard from the external USB drive. You do this by either going to System Preferences>Startup disk and choosing the external drive, or by holding down the option key when you restart your Mac and choosing the external USB drive.
4. The next step is to make your iMac dual boot now that you know it can run Snow Leopard successfully from an external USB drive. To do this, go into Utilities>Disk Utility and select your main drive. Select the main disk (with Lion on it) and then choose Partition and choose 2 Partitions. Drag the first partition bundary line down to make the second partition size as small as possible. In my case I had a stock 1TB drive and the smallest partition size it would allow me was 70gb. Create the second partition (assuming you have spare space on your drive to allow this to happen). This will then create a second hard drive icon on your desktop. I renamed mine "Snow Leopard startup".
5. Download the free (and excellent) utility Carbon Copy Cloner and use it to copy your Snow Leopard operating sytem from your attached USB external drive to your new partition.
6. That's it! Now you can choose to start up your iMac from either Lion or Snow Leopard using either method mentioned in 3 above.
7. As a final step I suggest your install your Rosetta only programmes in your new Snow Leopard partition so that you can access them easily and keep them all together.

Ever since snow leopard my external drive keeps disconnecting

i love airport base station extreme- it worked well for years. i get snow leopard (which is also great), but- now my external keeps disconnecting. i have it partitioned for time machine as well. but now it keeps disconnecting after five or six minutes. any help?

I am experiencing the same issue. I lost a complete hard drive volume due to this situation. About 2 years of data down the tubes and unrecoverable through Drive Mechanic 3 and other sources.
Please Apple, look into this as I am about ready to downgrade back to Leopard to prevent this. I thought it was my firewire enclosure but it turns out it is doing it with my USB mounted drives as well.
Both drives have been plugged in to external power by the wall plug and not bus powered so that would not be a cause for them to disconnect in terms of the bus powering them down.

After upgrade to Snow Leopard, my external drives do not mount...WHY?

I have spent most of this morning trying to find an answer to why my external hard drives are not mounting in 10.6.1. I have never had a problem with these drives (4 firewire drives). Not one of the will mo0nt. They do not show up under Disk Utilities either. these forums never get to the point and this is very frustratiing. I am not new to mac, I have used a mac since 1989 - never have I had a problem like this. And it seems like others are having the same problems to varying degrees. Why is there no clear answers to fix this? HELP? I need to get to my client files.

If they are Firewire, read on.......
Thought you could use this info about getting FireWire to work!
First, you should always Repair Permissions in Disk Utility before and after any update; I would do that now. If you installed your update with FireWire plugged in, your Mac may not recognize it anymore.
Try resetting your FireWire ports by disconnecting all FW devices, shut down your Mac and unplug it from AC power (wall socket) for 30 minutes. plug it back in and try FW.
If that didn't work, download the combo update from this site (yours may be corrupt), not Software Update, disconnect all firewire + USB devices except keyboard + mouse, Repair Permissions, re-install update, Repair Permissions again + try.
If that still didn't get it Zap the PRAM. While restarting Mac hold down the following key combo Command-Option-P-R. Keep holding those keys down till you hear the second start-up chime, then release.
A bad internal PRAM battery can also cause FireWire to not be recognized, so make sure it's good!
Also, here is Apple doc.#88338 on getting FireWire to work.
Here's another Fw Faq.
DALE

Snow Leopard on External Drive

Hello guys,
This is an issue that I have and the simplest option to resolve it is the one that I cannot afford for the moment. I'm a Pro Tools user and unfortunately I found out the hard way that the Pro Tools 8 version I have does not work with Mountain Lion which I just installed on my Mac Pro not too long ago. Since I don't use Pro Tools that often, I didn't do the required research before installing 10.8 simply because I'm a graphic designer and photgrapher first. That said, I don't even have an ungrade option. I will have to purchase Pro Tools 11 at $699. Yikes!
So my question is, is it possible to install 10.6 on an external HD and start up my computer from it. If so, can I re-install Pro Tools 8 in that same HD like if it was the internal drive? So I will have my internal drive with 10.8 and the external with 10.6 so I can use Pro Tools 8. Make sense? Will the compter work like if it was operating from the internal drive?
Thanks,
Luis

That would be the best solution. Then it should be the same as far as disks go for either operating system.
I had failed to ask about tha earlier. Sorry.
Allan

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

OS X Lion installed, want OS X Snow Leopard on External HD

I upgraded to OS X Lion (which I love), but I would like to install OS X Snow Leopard on an external hard drive. Unfortunately after inserting the Snow Leopard disk, I am receiving the message: "You cannot install this OS with the current OS you are running"
Would restarting the comp to boot from the Snow Leopard disk work?
If anyone can help, that would be great!

Install 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 the external 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. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID (for Intel Macs) or APM (for PPC Macs) then click on the OK button. Click on the Partition button and wait until the process has completed.
4. When formatting is complete quit DU and return to the installer. Install Snow Leopard. Be sure you select the external drive as the installation target.

Install Mac OS X 10.6 Snow Leopard from USB Drive

My MacBook Pro (Late 2006 15.4-inch 2.33 GHz Intel Core 2 Duo) has a SuperDrive that does not work.
I wish to re-install Mac OS X 10.6 Snow Leopard, as this is the latest DVD I possess, to wipe the HDD prior to selling. It has Lion installed but this was done via the Mac App store and I don't want to sell with any links to my account or as an authorised computer.
How do I boot the MacBook Pro from a USB stick, wipe the HDD and install Snow Leopard?

You will still need a Mac and a optical drive, a external one will do. To read the disk to put it on a USB, external opticals are not bootable.
http://www.maciverse.com/install-os-x-snow-leopard-from-usb-flash-drive.html
Here is how to remove data off the machine (hold on, extermely paranoid )
How do I securely delete data from the machine?

Can I install Lion over Snow Leopard without erasing and restoring hard drive?

Been reading a lot about downloading Lion. Recommended to back up hard drive to ext. drive, erase hard drive, install Lion and then re-install apps and files from ext. drive. Can I just install Lion over Snow Leopard without erasing all apps and files on hard drive?

If you do an upgrade install then be sure to do this first:
1. Repair the Hard Drive and Permissions
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. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Make a bootable backup just in case. 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 external backup drive. Source means the internal startup drive.

Clean Install of Snow Leopard and Multiple Drives

Greetings,
I want to do a clean install of Snow Leopard because of various issues carried over from previous upgrades and the like. I have the original 250 GB ATA drive and a 1 TB ATA drive installed, plus a couple of other external drives available via USB and Firewire. I was wondering if there would be a recommended configuration of the install of the OS utilizing the multiple drives? i.e. using the 250 GB drive exclusively for the OS and the 1 TB drive for Applications, music files, photos, games, etc. would I have to make any specific changes to the location of any of the folders and would this create any problems when doing so? Am I over thinking this? I am a little confused as to how to approach this. Please help any advice will be appreciated! Thanks in advance!

wildcheese wrote:
I want to do a clean install of Snow Leopard because of various issues carried over from previous upgrades and the like.
What kind of issues? There are very few that warrant a clean install to eliminate & some that will just recur until you find & eliminate their real cause.
I was wondering if there would be a recommended configuration of the install of the OS utilizing the multiple drives?
The only ones I recommend are those that dedicate a drive other than your normal startup one for backups. To be clear, I mean that the originals & the backups should be on entirely different drives, not just on different partitions of the same drive.
i.e. using the 250 GB drive exclusively for the OS and the 1 TB drive for Applications, music files, photos, games, etc. would I have to make any specific changes to the location of any of the folders and would this create any problems when doing so? Am I over thinking this?
Yes, you are probably over thinking this.
There are some advantages to using a different drive for user files & possibly even for the entire user home folder, but there are also possible problems for any configuration different from the standard one with the OS, apps, & all user folders on the same startup drive. As already suggested, you can move large users folders for some apps like iTunes libraries to a different drive (or even split the media content among different drives) but unless you have a compelling reason to do so, it is much simpler to leave everything in the default configuration.

How to install new reboot drive with Snow Leopard when new drive is unformatted and the only thing displayed is to choose to run the OS disc? It is impossible to choose disk utility as nothing happens.

Mac Pro (2006) running Snow Leopard crashed. Geniuses were certain it was bootable HD. Installed new HD and pressed option key with Snow Leopard in optical drive. Chose "Mac OS Installation Disc." Disc runs once for a minute, stops, runs again, then nothing. It is impossible to choose disk utility to format the disc as absolutely nothing but a black screen is visible!

pull all your drives so you just boot the DVD
If you have an ATI 5770 you cannot boot with less than 10.6.5
Ideally you would go through phone system and buy Lion, download and SAVE and create a Lion Installer media (DVD and flash memory are possible).
If you can't boot the DVD alone, let us know as gives a better idea.

Installing OS X Snow Leopard on External Drive Error

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