MacBook Pro :: External Hard Drive Is Not Recognized?

Apr 9, 2012

my new MacBook Pro not recognizing my hard drives. Yes, thats two hard drives I have that don't seem to work on this computer but both work on my older MacBook and many other computers.

Info:
MacBook, Mac OS X (10.5.8)

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MacBook :: External Hard Drive Not Recognized

Nov 1, 2008

I've got an external hard drive. It's a "My BooK" Western Digital 500 Gb that uses both USB and Firewire. I've used it many times successfully with my MacBook but today, my Macbook will not recognize it.

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MacBook Pro :: Use A New External Hard-drive If It Is Not Recognized On Finder?

Feb 20, 2012

I have a new seagate 500gb hard-drive, it is recognized on Disk Utilities and not only that it also says the hard drive is 2tb.

Info:
MacBook Pro

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MacBook Air :: External Hard Drive Not Recognized In Finder

Mar 21, 2012

I am trying to pull up my Western Digital External Hard drive after connecting it via USB. I used to be able to open it through Finder and there is nothing showing up.

Info:MacBook Air, Mac OS X (10.7.3)

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MacBook :: External Hard-drive Won't Mount Or Be Recognized

May 31, 2012

I just installed a new internal hard drive into my macbook as my old one was failing. Before doing this I backed up all of my information through Time Machine onto a Seagate FreeAgent external hard drive. I've been using this external hard drive for the past two years and I've never had any problems with my macbook mounting it. Once I had all of my personal information backed up I took out the external hard drive and then proceeded to take out my old internal hard drive and installed the new one. I installed the Mac operating system and the Macbook started up just fine but when it came time to reload all of my personal setting using Time Machine my macbook didn't recognize that there was an external drive plugged in. I know it isn't the external drive as it mounts just fine on other laptops. how I can get my macbook to mount the drive so that I can transfer all of my information onto this new internal drive? 

Info:
MacBook, Mac OS X (10.5.8), Seagate FreeAgent

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MacBook Pro :: External Hard Drive Not Recognized After Not Ejecting Properly

Jun 23, 2014

i have Macbook Pro 2011 8GB RAM, 1 TB Hard drive OSX Mavrick. i recently ejected my back up drive but it was not a properly ejected now when i plug in the computer it doesnt come up as hard drive. it shows up in the disk utlity but it doesnt open its my backup drive and i dont want to loose m data 

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MacBook Air :: G Drive External Hard Disk Is Not Recognized By Windows Laptops?

Aug 23, 2014

My G drive External Hard disk is not recognised by windows laptops yet it works on my MacBook Air

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Power Mac G5 :: External Hard Drive Not Recognized

Oct 9, 2007

I am a photographer. I use 4 X 1TB LaCie external hard drives to store my digital images. 2 as masters for different business segments and 2 as their back-ups. They are daisy-chained using Firewire 800. Recently my G5 has stopped recognizing one of the drives. Is there any way to get my machine to re-recognize the missing drive? I have rewired the four drives to see if there was a problem with the cabling, but this does not appear to be the case. I am coming up to the 1 year warranty period on this drive and need to get it back to LaCie if there is no other solution.

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Intel Mac :: External Hard Drive Not Recognized

Apr 11, 2012

I recently invested in a refurbished iMac which is running Mac OS X Lion 10.7.3 (11D2001).

I am trying to access my existing external hard drive through the machine and although this lights up when plugged in, it doesn't appear in the finder.  Other Memory sticks work without problem.

It is a Western Digital Elements 160GB Portable Hard Drive that has worked and continues to do so without problem on my ancient iBook G4.

Info:
iMac (21.5-inch Mid 2011), Mac OS X (10.7.3)

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OS X Mavericks :: External Hard Drive Not Recognized

Jun 1, 2014

I have used a Samsung HX 1Tb external hard drive under OSX Snow Leopard with absolutely no problem. Since I upgraded to the free (improved?!?) OSX Mavericks my Macbook Pro cannot "see" my hard drive. All I get when I plug it in is the following message -

my MacBook thinks that the hard drive is formatted for windows - but why should it work OK under Snow Leopard but not with Mavericks? I don't want to simply reformat the external drive because I'll lose all the files stored on it.Is there suitable software/Apps that I can use to let my Mac access this external hard drive.Incidentally my partners new Macbook Air can still read this hard drive. 

Info:
MacBook Pro (15-inch Mid 2010), OS X Mavericks (10.9.3)

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PowerPC :: External Hard Drive Not Recognized By Computer

Sep 19, 2010

My WD firewire 800 drive has stopped working, I can hear it spinning when I plug it in but the light doesn't come on and my computer doesn't recognize it. I've tried both the firewire and usb connections.

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Hardware :: External Hard Drive Recognized On Mac/but Not On Windows?

Jan 20, 2009

I have two external hard drives, one 250GB for my Time Machine, and one 500GB for other stuff. I had accidently formatted my 500GB to use for Time Machine, but realized, I didn't need that much storage, so reverted to the 250GB for Time Machine and the 500GB for storage. But it seems, in the formatting stage (for Time Machine), it set my file system for the 500GB to Mac OS Journaled. I can see this hard drive on the Mac, but it does not recognize it in Windows (although I hear the USB plug in sound, doesn't show up in "My Computer"). Does this have to do with the formatting? If so, how can I format it so that the external hard drives can be read by both Mac OS X and Windows? Does it require moving my data (before formatting?)?

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OS X :: External Hard Drive Not Recognized - Unknown Device

Jan 31, 2010

Another one of those "external hard drive not recognized" problems: I am using a Mac Mini. The external LaCie drive is in one of those beautiful boxes designed by a guy named Porsche. It's connected via Fire Wire. I have my iPhoto library stored on it. It was working just fine for the past two days after I first connected it.

Now it does not show on the Desktop. It is identified only as "Unknown device" in "About This Mac." iPhoto doesn't recognize it. I've looked at the other threads on this subject here and have reset the PRAM. Disk Utility recognized it for a while and said the disk was OK. Now Disk Utility does not recognize it at all.

I turned off the drive and turned it back on. That resulted in an alarming series of beeps, almost like somebody was sending the Morse code symbol for "E" over and over again. I turned the drive off and then on again. Now the light goes on and the drive whirs nicely. I am using System 10.6.2. Or rather, at this point it is using me.

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ITunes For Mac :: External Hard Drive Not Recognized Automatically Plugged In Via USB Port

Sep 8, 2014

So I plug my external hard drive into my IMac via a usb port, the drive turns on but the drive never appears on my desktop. How do I access my external hard drive when it is not recognized automatically?

Info:
iMac, OS X Mountain Lion (10.8.5)

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MacBook Pro :: New Hard Drive Still Won't Be Recognized

Mar 8, 2012

I've been having several problems with my mid-2009 MacBook Pro; 2 minute beachballs and failure to startup. So I've purchased a new new WD Scorpio Black thinking it was a HD issue, but after replacing my old HD with the WD, Disk Utility wouldn't recognize the new drive. So I searched around and found out that Hard Drive Cable failure is an issue on this certain MacBook. So I ordered a new Hard Drive cable and just replaced that today, thinking that my new HD would be recognized. However after going into Disk Utility via the OS X Install DVD, my new Hard Drive was still not recognized.

Info:MacBookPro

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MacBook Pro :: New Hard Drive Not Recognized

May 27, 2012

Have a mid 2009 13" 2.26 dual core. Started getting flashing folder with question mark icon and found hard drive failed. Tried two different drives, WD Scorpio Black 750GB 3GB/s 7200rpm and Seagate 500GB 3GB/s 7200rpm. Neither is recognized by the computer. What next? And yes I have the updated firmware.

Info:
MacBook
Pro, Mac OS X (10.6.5)

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MacBook :: Trying To Install New Hard Drive - Not Recognized

Jul 7, 2009

I have a first gen white macbook core duo. I am trying to install a new 320GB Seagate HDD in my laptop to replace the 60Gb drive. I installed it but I can't get the OS to recognize the Hard disk when it is installed in the computer. I have no problems when it is installed in an external case. I have booted off the Leopard disk but it does not show a drive available to format, I booted off the original drive in the external case and the disk utilities does not show another drive attached. If I put the 320GB drive in the external enclosure, disk utilities recognizes it right away. I have formatted it with GUID format but it doesn't work when installed directly in the macbook.

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OS X :: Macbook Hard Drive Not Recognized After Crash During Partitioning

Jul 27, 2008

I have been searching the internet for 3 days and finally gave up, besides buying another hard drive. Ill try to keep this short. i got Macbook C2D / OSX 10.4 / 80GB HDD What happened: I wanted to free up space on my macbook, so I removed my bootcamp partition buy using the bootcamp installer to merge the osx and winxp partition back together. The installer froze for 30min and i decided to manually restart (holding power button). What a mistake i made, on reboot i only get the folder with the "?" icon. Symptoms: OSX installer does not see a drive. None of the bootable linux recovery disk Ive tried can see the drive. WinXP, Win98 recover disks do not see the drive. Terminal "diskutil list" shows=

/dev/disk1
0: untiled *467.0 kb disk1
/dev/disk2
0: untiled *219.0 kb disk2
/dev/disk3
0: untitled *95.0 kb disk3..........

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MacBook Pro :: Getting A Seagate Hard Drive Recognized Over WIFI

Feb 6, 2012

I have recently bought a Seagate external drive. It works fine for Windows over WIFI. But for the Mac, it only works when directly connected and is not recognised over WIFI - the drive is not listed under devices.  It did when I first started the drive yesterday, when I managed to copy all my files onto the external drive via WIFI.  But not today.  Perhaps related to the software update I ran last night? 

Info:
MacBook Pro (13-inch Mid 2010), Mac OS X (10.6.8), Seagate Expansion external drive

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MacBook Pro :: USB Hard Drive Is Not Recognized On It Running Lion

Mar 21, 2012

I have:

- Freecom ToughDrive Pro USB hard drive

- New MBP running Lion 10.7.3 

When I plug the disk in an USB port in the MBP, the light that indicates operation starts blinking but very lighltly colored and the disk is not recognized by the computer. I have put data on it using iMac Snow Leopard. I have plugged the disk into a MBP running Snow Leopard and it works. I have also tried another Lion (older MBP) and it also works. 

How come the disk is not mounted or shown in Disk Utility. Can it be a power issue?

I have noticed there a lot of similar posts in the forum and none has been satisfactorily solved. Is this a mayor Lion bug? If yes, how can I downgrade to Snow Leopard?

Info:
MacBook Pro, Mac OS X (10.6.8)

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OS X :: Hard Drive Not Recognized By System - Hard Drive Not Formatted

Jul 20, 2009

I've just got a new external HD, but it's not being recognised by Mac OS X (10.5.7). I assumed it was because it was in a Windows format, so booted Windows, but it then turned out it wasn't formatted at all. What is the easiest way to make this an HFS+ (the Mac OS extended format), and how do I do it as I can't see it anywhere on the Mac (including Disk Utility)?

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MacBook Pro :: Intel Hard Drive Not Recognized When Installing Leopard

Jul 15, 2010

I have a Macbook pro 17" 2008 model, and I just bought a new 160gb Intel X-25m solid state hard drive. I installed it into the mac with no problem, but when I boot up with the OS boot disc 1, the drive doesn't show up in the "destination" screen. No drives are there. When I open Disk Utility the drive is there, and shown as read/write, but when I boot with option held down the drive isn't there either. I can't even do any repairs on the drive in the disk utility.

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PowerPC :: Hard Drive Not Recognized?

Apr 16, 2009

I have tried troubleshooting, searching this forum, & googling to no avail. I'm hoping someone smarter than me can figure this out.

Short Version:

Purchased this hard drive:

[URL]

and purchased this external enclosure:

[URL]

when I plug it into my macbook, PC, or a powerbook, the disk is not recgonized, I can not get Disk Utility to even recognize that the hard drive exists. I thought it may be a bad drive, so I sent it in to Seagate Warrenty, they sent me a new one and I'm still having the same problem. Does anyone know how I can format the drive or any way I can get it to be recognized?

Longer Version:

My powerbook crashed, so I purchased this HD to replace it. I installed the 1st seagate and when i went to install OSX and said select destination drive, there was none there to select. I was able to repair the original HD so I reinstalled it and went to install OSX and it DID show the drive to install it on, so I don't think that it is the computer/motherboard. Then I sent in for the 2nd seagate, tried getting it to work with the external enclosure and installing internally in the powerbook, etc. nothing seemed to work.

I am wanting to install the new drive in the powerbook as the old drive is on its last leg (but currently works). Every thread i have searched for that was similar, there was no solution that I could use.

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OS X :: Hard Drive Not Recognized By Computer

Dec 28, 2009

I plugged in my hard drive into my Macbook Pro and it wouldn't show up on the desktop. Opened the finder, and it wasn't there either. I went into the disk utility and it was there. So then I thought maybe rebooting the computer would help. Then I plugged it into my friend's Macbook and it showed up no problem. The last time I used it I remember that error appearing where it forces you to shut off the computer. Does that have anything to do with it? I do photography and I have my entire collection on this hard drive, so restoring it is not an option. Like I said, the device was recognized and worked fine on my friend's laptop, just not on mine.

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OS X :: 1TB Hard Drive Stopped Being Recognized

Mar 20, 2010

I've had a 1TB external drive (Samsung Story) working wonderfully as a Time Machine backup for the last month. It had been unplugged for the last couple days, but I plugged it in today to do a back-up. Unfortunately, it wasn't recognized. It stills lights up and makes noises so I don't think it's dead, but no matter which USB port I put I use or how many times I restart, my MacBook won't recognize it anymore.

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OS X :: WD Hard Drive Suddenly Not Recognized?

May 8, 2010

Just a few seconds ago, my WD Mybook external HD wasn't recognised. The sign came up saying that you should eject your drives before disconnecting them (although I didn't disconnect it). So I unplug it and try to plug it back in and it isn't recognised. The hard drive is powered (I can hear it spinning), I tried switching firewire cables, I tried it with another computer, and it isn't recognised

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Hardware :: USB External Drive Not Recognized

Dec 27, 2006

I'm having some troubles with an external enclosure and my sister's new imac. The enclosure I'm using is a Tao Tec 2500 (2.5" drive) IDE --> USB device with the Y-cable. The drive has been formatted to NTFS and has some files on it. As far as I can tell though the version of OSX the new imac is running should support read capability with the file system though. The computer is a latest generation imac (purchased about 12/20/2006) and running a new revision of OSX (about 1.0.4.7 I believe). My problem seems to be the computer simply does not recognize the drive. Disk utility doesn't see it nor the usb manager in system tools. The LED indicator on the drive indicates that it's receiving power and I've tried swapping the usb ports around just to be sure I don't have a bumed port. It simply seems like OSX just doesn't know the drive's there.

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MacBook Pro :: Cloning Entire Hard Drive To An External Hard Drive

Mar 31, 2012

Recently I bought 2 identical WD Scorpio Blue 1TB hard drives for my macbook pro 13 inch 2010. My aim is to replace the internal hard drive with one of the two I just purchased and use it as my system drive with Lion, Windows and Data partitions. And for the other hard drive I want to use it as a full disk back up for the internal drive (now 1TB hard drive).After I was done with setting up both windows and mac and data transfer, when I booedt into the recovery partition from the internal drive to clone the drive to the external drive, the disk utility gave me this error (Could not validate source - error 254). I also tried using Carbon Copy Cloner but it only could clone partitions, not the entire drive. Yesterday I downloaded a copy of Clonezilla. It worked fine until it had to clone an exFAT partition (my data partition). The exFAT partition appeared as 'RAW' partition in clonezilla. As a result, the whole partition appeared to be full and clonezilla had to copy every single blocks of data in that partition and the estimated time remaining was about 30 hours. So clonezilla is out too. Just want to ask if there is any program/application (bootable or not) which allows can do a full disk clone to an external hard drive.

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OS X :: Mac Crashed Repeatedly / Hard Drive Not Recognized

Dec 30, 2009

I have a 2007/2008 MBP 2.4Ghz running 10.6.2. I was having repeated hard crashes
due, I think, to some stupid firefox mods I made a few days ago. Every 1-3 hours, the system would freeze, make that crackly thinking really hard noise, spin the beach ball, and wait for me to hard restart. This happens 3 or 4 times today, and on the last crash, the system hangs on restart. Grey screen, spinning grey circle of circles for 10 or so minutes. I can't wait any longer, so I hard restart again, and again the system hangs indefinitely. Now I start to get a bit worried. I boot from the Snow Leopard install disk and open disk utility. From there, I attempted to verify permissions, but the process hangs with one minute remaining for at least 20 minutes. A crash while trying to repair a crash. Great.

So I hard restart AGAIN, and open disk utility, this time selecting repair disk. The utility detects a few errors, supposedly corrects them, then hangs for about 2 minutes, finally culminating in the hard drive disappearing act. The bar looks complete, but the hard drive is gone from the list! GONE! I can't select it from the sidebar in Disk Utility. It doesn't show up in the Startup Disk menu. The only drive I can access is the dvd drive with the Leopard disk. I opened System Profiler and looked under Serial-ATA, and found the only entry was for an Intel ICH8-M ACHI. I don't remember that being there. It used to be a Matsushita drive. Can't find anything on google, and I want to do whatever I can before giving up hope on all my data. Haven't made a backup in a while.

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Hardware :: IBook Hard Drive Not Recognized?

Dec 16, 2007

I recently installed 10.5 onto my iBook G4 (933Hz 640MB) using target mode from my Mac Mini. I couldn't use the Leopard DVD install disc as it has got stuck in the Disc drive of the iBook, even though the laptop was working fine with 10.4.

When I restart it I now get a flashing question mark, i.e. the iBook can't find the hard drive. I can't use Disk Warrior as I can't use the internal disc drive.

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