Intel Mac :: Can't Use External HD To Boot It
Feb 3, 2012
I bought this Seagate hard drive go Flex from Costco and backup my HD using Carbon copy cloner. At the time of my backup the lion version is 10.7. I am now at 10.7.2 at my internal HD although the external remains at 10.7. When I choose the Seagate HD from system preference as the start up disk you will hear the dong sound and the screen would appear but then it will shut down and the external drive would go into low energy mood. In other words the computer recognizes the external HD as having an OS but would not go through with the boot.
Info:iMac, Mac OS X (10.7)
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May 29, 2012
OS X 10.4.3 IMAC Intel Core Duo. I backed up my HD on an external drive so I could upgrade to Snow Leopard. I wanted to test that I could boot from the external drive and selected it as my start up drive. When I did a restart I got the Apple and the turning gear and then suddenly a black screen with this on it:
"May 28 22:23:11 Launched:com.apple.nibindd:respawning too quickly throttling, exited system abnormally bad system call too many failures in succession I have no name!"
I tried several dozen times with no luck. I think when I made the copy of my HD on the external HD I may have neglected to make it "bootable" (moving too quickly). My internal CDROM is busted so I use an external CDROM. I can't boot from it at all with the proper start up buttons pushed. It keeps trying to boot from the external drive. If I turn the external drive off and try to boot from the external CD I just get the grey file with the ? in the middle of it.
I tried using another external HD I have with OS 10.4 on it, but it won't recognize it either with fan, alt, shift, delete pressed at start up. My internal drive (a Seagate 2 tarabite drive) works great, but how do I reset it as the start up drive when I'm stuck with this black screen. One more thing, when I try to reset PRAM I don't get a second gong.
Info:
iMac Intel Core Duo 2GHz 17", 2006 model
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Mar 15, 2012
Currently I'm upgrading from Leopard to Lion (via Snow Leopard) on both an iMac and MacBook Pro (both Intel), but before I proceed with the OSX upgrade I wanted to back everything up. Thus far I have partitioned an external firewire drive (G Drive - one that is bootable), and cloned each machine using Carbon Copy Cloner to it's own partition (both GUID). There is plenty of space left over on each partition, and is Mac OS Extended (Journaled).
The issue - I can boot the OS X from the external drive on the MacBook Pro but not on the iMac.
When I restart and hold down Option on the iMac the only drive that appears is the HDD, not the other two drives that are visible if I boot up on the MacBook Pro. On the iMac in System Prefs > Startup Disc I can see all 3 drives but when I select it and restart, the machine freezes on the grey loading screen and goes no further.
Not that it should make a difference, but there is a 3rd partition on the external drive that is currently empty (for extra storage).
Info:
iMac, Mac OS X (10.5.8)
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Mar 16, 2012
I am unable to boot lion from an external drive on both a MacBook Pro mid-2009 and an iMac late 2008. Both have lion installed and I would like to boot from either a FW drive or USB key. I have reformatted both a FW drive and USB and set them to GUID and installed lion but I can only boot them to the Disk Utility App (drive shows up only as 'EFI Boot' when I hold option down).
The firmware is up to date and I also reset the PRAM. I am able to boot both computers from an external USB Snow Leopard drive.
Info:
iMac, Mac OS X (10.7.3), iPhone SDK
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Apr 30, 2012
Have late 2006 iMac 24'' and I can't boot from external FireWire drive. If I connect the same external drive via usb2 I can boot from it but it is slower than FireWire800 would be. The external drive is in i-tec 3.5 External Case.
Info:
iMac, Mac OS X (10.7.3), iMac 24'' late 2006 intel DualCore2
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Dec 11, 2014
is there a way to speed up my mac with three external hard drives attached,at the moment my mac is taking ages to boot up, they are all 2tb drives
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Mar 8, 2012
My internal 1TB hard drive on my iMac is dead and I don't have the money to replace it at the moment. I have everything backed up on an external 1TB drive using Time Machine. As a workaround for the time being,Is there any way I can install the system on the external drive and use that as the boot drive without erasing the Time Machine Backups? It seems to me I would have to have two partitions for the external drive, one for the system, and one for Time Machine. But is there any way to add a partition without erasing the existing one with Time Machine only on it?
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Mar 25, 2012
MacBook Pro 15" (15-inch Core 2 Duo) late 2006 this apple macbook boot lion from usb or firewire ext hdd or usb stick which of 3 better must boot Lion on ext device? or none at all?
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Dec 20, 2007
This is bad and old, and full of lessons about backing up. Anyway, internal boot drive crashed a week ago, and internal optical drive is busted. New external LaCie dvd burner works fine, but all attempts to start up from Tiger, Leopard and Diskwarrior installation disks just end up back in OS10.3 on my external LaCie FW drive. I've tried many things: unplugged everything; switched external LaCie to USB (wouldn't boot), unplugged power from internal optical drive so Mac wouldn't look there first (somebody suggested that). Attempts to start up installers from mounted DVDs result in installer screen with restart button, which, when clicked on, results in... you guessed it... boot back to dreaded 10.3 system. Night owls and westcoasters, I am up for hours yet, pulling hair.
Information:
G5 Dual 2GHz
Mac OS X (10.4.3)
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Oct 13, 2010
Is it possible to boot from an external Firewire DVD Drive? It certainly isnt from an external USB DVD. Real answers only please, not "I think so" ones based on HDDs or rumours you may have heard!...
Background:
I've got an MCE Optibay in my Mid-2010 i7 MBP. When installing Bootcamp it refuses to install from the external USB DVD drive. In the end I pulled the 2nd HDD out and reconnected the internal DVD. It then worked fine without a hitch. Then I reinstalled the 2nd HDD and all was fine for a few days.
Now I want to resize my Win7 partition (bigger, as MS Visual Studio's bigger than I thought, and I might stick some games on). I can shrink the OSX partition fine with Disk Utility, but windows won't grow the Win7 one because the empty space is before the Win7 partition, not after it. Apparently this can be done with GParted. Guess what? I can't boot the Linux based GParted CDROM from the external USB DVD drive! So, will a Firewire one work where USB fails, and solve my alternative OS booting issues? If I buy one I can then either use GParted, or delete the Win7 partition and start again without having to pull the laptop to bits all over again, only to put it back once I'm done, and possibly have the same issues in the future. Obviously I don't want to blow extra money getting a Firewire DVD drive though if it's a waste of money...
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Jun 4, 2014
i have a big problem with my MBP 13". I install Mac os x (try also Maveriks) on a HDD drive it works fine, but when i put this HDD inside (internal) it won't boot.
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Apr 8, 2012
My mid 2010 iMac i7 will not boot past the apple logo? I'm running 10.7.3. I have tried restoring from TM backup from recovery mode (worked the last time this happened) however upon completion it returns to the recovery screen? I made a disk of Lion when I downloaded the first time (followed same instructions sourced from numerous websites) which does not seem to work when i set to start up from this disk, just gets to the grey screen and flicks between the apple logo, a folder icon with a question mark and the circle with line through? Now I can't eject the disk either, a message appears that system can't eject and to make sure all applications are closed? Not sure how to go about closing these applications without being able to start the system? When I tried booting from the Macintosh HD I got a message that the boot cache partition was faulty? I have ran disk permissions etc all ok.
Info:
iMac, Mac OS X (10.7.3)
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Apr 13, 2012
Can't access external headphone or external speakers. Choice disappeared on output, still there for input.
Info:
iMac, Mac OS X (10.7.3)
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Feb 20, 2009
I have an annoying problem; I have 2 x 1TB Seagate daisy chained and then connected by FW800 to my iMac.
When I do a fresh boot up (in the morning usually), the hard drives don't automatically mount, I have to take the FW plug out and put it back in again.
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Mar 11, 2009
I have a mac g4 mdd 1.25 and the power supply is fried..I also have a mac g4 mdd dual 867...that works..Question...can i take the main drive from the broken mac, put it in a box ..then reboot from that external drive on my mac that works.?
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Jun 17, 2009
I have an 08 mac dual quad and wanted to ask if i could boot my computer from an external instead of having the disc as an internal?
that way i can use the 4 bays for terra byte action and run a raid of sorts without having one bay for the OS.
also if i can do this could i also install boot camp on another external to run my boot camp partition from an external as well?
or can you run parallels or fusion from the same disc as the mac OS at the same time?
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Jul 3, 2009
The loaner computer I am using is running Tiger. My clone of my computer thats in service is Leopard, every time I hold option and try to boot from the external clone it tells me this computer needs to be restarted.... can I just not boot from an external drive?
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Mar 24, 2010
I have a 21.5" iMac, I installed Snow Leopard on a external drive, but I am unable to boot from it.. I've tried pressing the option(alt) key, and the only drive that shows up is the Macintosh HD..
How do I boot from the external USB drive?
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Sep 6, 2009
I have a G5, 1.8Ghz computer with OS 10.5.8 installed. Some problems developed and I tried to run Disk Warrior. The disk shows up on the desktop. but won't start when I select either the "C" key or use the option key. The same thing happens when I use an external drive that has the startup drive cloned several months ago. When I use the Option key only the original startup volume appears. When I use the "C" for Disk Warrior the the system folder appears and switches with a Question mark. Again when I try to boot from the OS 10.5 install disk, I have the flashing folder when I hold the "C" down. The same problem I had with Disk Warrior.
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Mar 8, 2008
Can I boot to an .iso on a firewire drive? I've been having trouble with my disc drive lately, so this is how I'm trying to work around it
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Oct 20, 2009
When I boot up, my external drives are not on the desktop. I discovered that if the Finder is relaunched, they show up and all is well. Another issue that may be related: When powering down, the computer needs a force-quit most of the time. It hangs on the spinning gear
OSX 10.4.11
PowerPC G5 dual 2.7
Finder 10.4.7
2 internal drives
1 LaCie 1TB Raid (formated JBOD)
1 CalDigit 1TB Raid
250 GB External
150 GB External
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Aug 31, 2010
I have an intel iMac (2.4 Ghz C2D) and at the beginning of the year I purchased a Drobo. I have all my data on the Drobo, and decided to move my home folder to the Drobo. I discovered I could not boot as the admin if the Drobo was not connected.
I want to use Super Duper to clone my HD on an external so I can boot from it on my Macbook when I travel. My internal HD on the iMac is 320GB but only 60GB is used (applications). The home folder on the Drobo is 300GB's in size. If I partitioned a 500GB drive say one partition being the home folder and the other partition the internal drive on my iMac would I be able to boot from the external?
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Sep 6, 2010
I have a G4 "sawtooth running OSX 10.4.11. Is it possible to boot this mac from an external USB2.0 drive?
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Jan 11, 2009
Back on 10.5.5 and below, I was able to install Windows with Boot Camp and my External DVD Drive - My Internal SuperDrive is in the jelly and won't work. But on 10.5.6, Windows decided to give me licensing problems after I tried to use it with VMWare Fusion 2.0. So, in temper I deleted the partition in Boot Camp Assistant.
On the creation of a new, bigger partition for Windows 7 Public Beta, I found that I could no longer use my External DVD Drive to install Windows in Boot Camp.
So, now, Apple has pretty much forced me to come and get the SuperDrive fixed ($65 for a QUOTE, and Over $150 to get the thing fixed) if I want to install Windows onto my Mac.
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Apr 16, 2009
I want to know if you can boot from usb as i installed windows on a extral HDD and i want to know if you can boot from it?
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Mar 13, 2010
Sorry if I am in the wrong forum, as you can guess im a newbie at the forum - not at computers though (6 years experience.. )
So I have a 1TB WD Hard drive USB and I copied the Leopard Disk image and restored it onto it in a 500GB partition.
I have tried to boot it up normally by holding down Alt on start up but the drive doesn't come up. Ok.
I have tried going into the Start up Disk, it comes up and when I click on it and click restart it doesn't restart, it just does that Mac Beep thing.
I have recently just tried to boot it up manually using the Open Firmware technique. It doesn't work.
I have a PPC Mac and I know that they can't normally boot up USB Drives but the other users which I read on the thread how to boot up by the Firmware technique said they're PPC and it worked.
I just wanted to format my computer, My leopard disk is gone now but I got it copied JUST IN TIME to my Hard drive.
I formatted my computer and now i'm stuck on Tiger.
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Jun 25, 2010
I want to make a bootable clone of my iMac (PowerPC G5 running OS 10.5.8) and also backup my MacBook Pro onto an external USB hard drive so that I can restore from the external hard drive if my iMac dies (which is beginning to have startup problems).
I was planning to create 3 partitions - one for iMac's data which I'll continue to backup using TimeMachine, one for my MacBook Pro's data and one partition as a bootable clone of my iMac.
My question is.... if my iMac dies, how do I use the external hard drive to boot up from? Do I need Carbon Copy Cloner or will I be able to boot up from the external hard drive and access Apple's Disk Utility?
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Sep 5, 2009
Problem: I need to boot from an external USB optical drive with another OS's cd (linux, windows, etc) I am trying to install some other operating systems ontop of my mac, but sadly my optical drive is broken and cannot read any large DVD's, but it can read small CD's, just not blank ones. So I bought a mac compatible USB external cd/dvd drive but when I restart and hold alt, my computer does not recognize it. Extra Info: If I want to boot from OS X Snow Leopard on the external drive, it will work, but for no other cd. Including a burned version of Linux or a commercial release version of linux.
Computer Info: It is a MacBook Pro first generation, and I just reformatted and started fresh with Snow Leopard. I used the external optical drive and was hoping to have 4 OS's on it, I know how to do it, but I just cant get the install cd/dvd's to be recognized.
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May 7, 2012
I was copying over a SD card via the SD Card read to my internal hard drive. Half way through it froze. And it wouldn't let me do anything. I removed the memory card and all I or was a spinning rainbow circle. So I powered off the MacBook manually (holding power button). When it started up again it came to the apple logo. And froze. So like a idiot I manually powered off the MacBook again. Next time it booted it showed me the stop sign.I tried to boot from cd (holding C while laptop starts), the disk spins but ends up hanging on a White screen. Now I don't mind reinstalling OS x over it. But I just need one folder from It. Is there anyway I can connect this MacBook to my mac pro browse the MacBook internal hard drive and copy over the folder I need?
Info:
MacBook Pro, Mac OS X (10.6.8)
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May 24, 2012
I am trying to create an external boot drive but I can not boot to an external drive.If I mount an install disk to any drive I have it will not boot to it. If I select it in startup drive or option boot it will not work.
Info:Xcode, Mac OS X (10.7.2)
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