Booting from external hard drive on intel-based MacBook Pro

Good day everyone. I know similar questions were raised in this community, but I still have some questions.
I have MacBook Pro(late 2011) with OS X 10.7.5 and external hard drive with Ubuntu 13.04, from wich i can boot succefully on my PC. But MacBook Pro will not boot from my external drive, no matter which key/combination i use during restart.
After googling I found some answers to my initial question, how to boot from external hard drive
https://discussions.apple.com/thread/1852633?start=0&tstart=0
http://www.everymac.com/systems/apple/macbook_pro/faq/macbook-pro-boot-from-exte rnal-firewire-or-usb-drive.html
http://support.apple.com/kb/ht1948
As I understand I need to format my external hard drive into GUID partition type and this will be enough to be able to boot from it on my mac?
With this new partition type, will I be able to install ubuntu again on my external drive?
Does GUID partition type supports NTFS, ext4 and FAT32, linux swap?(I use ntfs for big files, ext4 as partition for ubuntu and fat32, because i use windows, linux and osx)
Will I be able to boot from my pc from my external drive with this new partition type?
What are downsides, if any, to GPT?
here is info on my e-drive

LowLuster wrote:
The only OS that will boot from an external drive is Mac OS X or maybe Linux. For OS X to be installed on any drive it need to be formatted Mac OS Extended and have GUID partition table.
As for Linux I'm not that familiar with it but again for a Mac to boot it need an EFI partition on the drive and I don't think that is possible with NTFS or FAT32 let alone the native Linux format.
Went to wiki to learn more on efi but found artice on uefi.
Operating system loaders are a class of the UEFI applications. As such, they are stored as files on a file system that can be accessed by the firmware, called EFI System partition (ESP). Supported file systems include FAT32, FAT16 and FAT12, and supported partition table scheme is GPT only. UEFI does not rely on a boot sector, although ESP provides space for it as part of the backwards compatibility.[26]
Here is FAQ on official uefi website.
Can UEFI Secure Boot be adopted and implemented by a variety of operating systems?
UEFI specifications are platform-independent, supporting multiple platforms and architectures. In addition, UEFI specifications are designed to promote cross-functionality, as well as to support broad adoption across multiple operating systems, including Windows as well as Linux-based operating systems. The specifications are robust and can potentially complement—or even advance—other distributions, such as Linux-based distributions.
And here is wiki article on GPT expaining OS support.
It is obvious both uefi and GPT are ok with Linux and file systems such as FAT32, ext4 and NTFS.
I guess there is no much difference(or is that the same thing?) between uefi and efi used in Macs.
In your answer to Stark Industries you said that mac can boot linux from external hard drive, well this is not the info i got of official website and it is still my question, because your answer is very inconclusive and your info is partially incorrect

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Transferring data from external hard drive to new replacement Macbook Pro...

Hello,
Apple have arranged to give me a replacement Macbook Pro due to faults with hardware on the one I am currently using. I will be going to pick up the replacement Macbook Pro tomorrow morning.
As a complete novice I just wanted to check that I have backed up the data from my current laptop onto my Iomega external hard drive properly, as I am slightly nervous about losing all my work and not being able to transfer all my files onto my new Macbook Pro tomorrow.
I did a back up using time machine earlier today which took quite a long time and seemed to go successfully. Is this the right thing to have done to save all data from my current laptop onto the external hard drive?
Will transferring data from the external hard drive onto my new Macbook Pro be a simple task?
Will I have to reinstall all my software such as Logic and Pro Tools? Also will my preferences and settings for music software be changed?
I'd greatly appreciate any advice.
Thanks,
Deena

Well it's like this.
If your problem on the Mac didn't affect the software or the TimeMachine backup, then restoring from that using SetupAssistant (when you first set up a new Mac it will ask you to restore) should go fine.
HOWEVER, if there are software issues on the Mac that also transferred to the TimeMachine drive, that will only transfer them back onto your new computer.
You can't very easily just pick out the things you want to restore from TimeMachine with, it doesn't give that fine detail of control, and if it's really messed up, it might not restore anything at all.
The golden rule of backups is to maintain two separate and easily accessible hardware copies of your data off the machine at all times.
Since you don't know for sure if the TimeMachine restore is going to work as intended, and your only other source is going to disappear, I'd advise a additional backup of your Music, Documents, Pictures and Movie folders etc., to another regular external drive via regular drag and drop copy methods.
The operating system and programs can all be reinstalled from fresh sources on the new machine, provided you have the AppleID and password, license codes for your programs, email passwords and any other necessary information to re-establish the license on the new machine.
(In some cases licensed software HAS NOT transferred to a new machine with a TimeMachine restore and had to be reinstalled)
Some times you have to contact the developer or "uninstall" the licensed program so it sends a signal to their servers that the program has been removed, else your license code may not work on the new machine.
You might decide the new machine would be better off with a fresh install of your programs that you know are 100% compatible with Lion etc., leaving a lot of older stuff you installed over the years off the new machine, if you restore from TimeMachine, you don't have this option. You pretty much get all the crap along for the ride,
If your new machine gets all crapped up, then restoring Lion is going to going to be a tough challenge, as you need a strong reliable Internet connection to download a fresh copy of Lion from Apple servers (no more disks). Once you do that, then somehow you have to use third party software ($$) to cherry pick your files out of TimeMachines trap. More headaches than you anticpated, and likely a charge by a specialist.
So I'd advise another hard drive with a copy of just your files, just in case a crap-up occurs
You can restore Lion yourself if it craps up, install programs from fresh sources as you know how to do, use the old license codes and then return your files manually exactly back into their same Music, Pictures, Documents, and Movies (etc, not Library) folders as before.
The key to this manual method is to make sure to use the same user name as before, so all your file location data pathnames retained by program files like iTunes to where the songs are located on the drive, are matched. Once you open these programs and restablish the links in OS X, then you can move them around.
Some tricks, if you use iPhoto, you can right click "show package contents" and inside is a folder with your Originals, copy that out and you can reimport your pictures into the new iPhoto Library on the new machine.
So use TM if you dare, but prepared to do things manually is my opinion.
TM restores have not been all that reliable or dependable, the more messed up your machine is, the worst the restore seems to be.
Good Luck

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Hello all,
I had a upto date 6 year old Macbook G4 that I regularly backed up onto a external hard drive.
I recently purchased a new Macbook Pro OS 10.8.3 with iPhoto version 9.4.3.
I imported all info from the external hard drive to the new MacBook Pro. Seems most all data transferred ok.
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updated "design" casing cousin $119
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HGST Touro Mobile 1TB USB 3.0 External Hard Drive
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I can select the external drive in System Preferences/Startup Disk to boot from, but when booting the iMac gets as far as the white screen then just stops loading.
I have tried both the USB connection and the Firewire connection (with a Firewire 800 to 400 cable).
I have run Disk Utility and repaired the disk and the preferences.
I have used Disk Warrior to rebuild the directory as well, but the iMac will not boot from the drive.
It does boot from the original DVD's and its own hard drive.
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It sounds like something in the SuperDuper clone might not have copied well. To get the full answer on that I would check with Apple or SuperDuper to see if they support each other.
As a quick test, if you restart and immediately press and hold "option" on your keyboard do you see your external HD as an option to boot from? If so, click it and see if the boot runs any differently, but if you don't see it at all that could show that the problem is more deep rooted.
Personally, if looking in to either of those didn't give me any other info to go on, I would reformat and start the clone again. BTW, do you know for sure GUID Partition is the format you'd want to do this on? Generally macs use "Mac OS Extended" and some external HDs can use "FAT32" (if you want them to work well with Windows)
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Booting from external hard drive

Hello.
How do I install Mac OS X on an external hard drive, or have Mac OS X running on an external hard drive and boot from it? I tried to install to it and it says Mac OS X cannot be booted from this drive.
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Remy,
SuperDuper is another option, but...Note also that USB drives do not allow booting Power PC based Macintoshes under any version of Mac OS X: this is not a SuperDuper! limitation, but one of the OS. If you would like to boot from a backup stored on an external drive, and have a Power PC based Mac, please purchase a Mac compatible FireWire drive.;~)

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No. If you boot an installer disc on an Intel Mac it will only install an Intel version of OS X. You would need to boot the installer disc on the G5 then install OS X onto your external drive. However, if you do that you will not be able to boot the Intel Mac with the external drive. The only solution to using one external drive on both computers is to partition the drive. Install OS X on one partition using the G5, and install OS X on the other partition using the Intel Mac.

Booting from external hard drive problem

Hi,
I recently bought a Firewire external hard drive which I had intended to install Mac OS X from, as my internal hard drive had failed and I was not in a position to get in fixed.
I plugged it in and booted up from the Mac OS X install DVD and went to install Mac OS X on it. However, it tells me that I cannot install Mac OS X on it as Mac OS X cannot use it as a start up disc.
Can anyone help me?
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Joel
I am using an Intel Macbook CD 1.83, and the hard drive is: http://www.amazon.co.uk/Western-Digital-Premium-External-Firewire/dp/B000F6SGB4/ ref=sr17/203-8192978-6980723?ie=UTF8&s=electronics&qid=1174486803&sr=1-7

Do the following:
Extended Hard Drive Preparation
1. Boot from the OS X Installer Disc One that came with your computer. 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. Click on the Partition tab in the DU main window.
3. Set the number of partitions from the dropdown menu (use 1 partition unless you wish to make more.) Set the format type to Mac OS Extended (Journaled, if supported.) Click on the Option button and select the GUID partition scheme. Click on the OK button. Click on the Partition button and wait until the volume(s) mount on the Desktop.
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, if supported.) Click on the Options 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 will take 30 minutes to an hour or more depending upon the drive size.
After formatting has completed quit DU and return to the installer. Proceed with the OS X installation. When you reach the screen where you select a destination drive select the external drive.
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Booting from external hard drive on intel-based MacBook Pro

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