Intel Mac :: It Does Not Recognize External Hard Drive
Mar 3, 2012
My external hard drive (Iomega powered 1TB hard drive) that I had as the Time Machine target recently filled up - I have 500GB on 1TB iMac - yet TM showed 999GB. I removed this hard drive and installed a WD USB powered 1TB and this keeps disconnecting - suspect by iMac. TM on System Preferences will not allow me to select the hard drive - I have to remove and reconnect the USB lead to allow the iMac to see it
Info:
iMac, Mac OS X (10.7.3)
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Jul 23, 2008
I just got a new external hard drive and have moved all my music over to it but can't get my itunes to recognize it, I have gone to the preferences and when I try and change the location where the music is itunes does not find my external hard drive. I have tried to repopulating the list and it does not find the Hard drive.
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Apr 29, 2012
I log the external HD, the lights on the Hd are going on (means electricity goes) but i cant see the thing inside the HDÂ
Info:MacBookPro, Mac OS X (10.4.6)
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May 23, 2008
My Powerbook G4 (OSX10.3.9) will not recognize a Toshiba USB 2.0 external hard drive.
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Mar 1, 2010
I have a PowerPC G4 running OSX 10.4.11 that contains a lot of media files. I want to transfer them to my external hard drive (1 tb) so that I can use them on my newer MacBook. I was unable to partition or erase anything on the external hard drive from the PowerPC, because I kept getting an input/output error. I followed the same process and was successful at establishing partitions on my MacBook. Now, I plugged my external into the PowerPC to copy the media files, but it isn't recognizing the partitions on the external harddrive! What did I do wrong?
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Jun 5, 2010
I've just installed Windows on my MacBook with Boot Camp. I decided to format the disk NTFS instead of FAT because everyone says NTFS is safer and more reliable. The problem is, I can't seem to use my external hard drive when using Windows, and can't copy files from Mac OS to the Windows disk because NTFS is read-only. There are some pretty big files I have on my MacBook that I want to use in Windows.
The external drive is a Western Digital "My Book".
Sorry if this is a really stupid question but is there a way of using my hard drive in both Mac OS and Windows? If not is my only option of transferring data from one OS to the other to reinstall Windows as a FAT drive or to use DVD-Rs?
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Sep 9, 2014
I am using an Intenso 2,5" MemoryStation as an external hard drive. I have a few folders with pictures on it and my TimeMachine. When I plug it in it would usually show up on my desktop and start backing up my hard disk automatically. Something has now changed.
My dad gave my Macbook a new hard disk with more storage. When he put it in, he first safety copied all my stuff onto a separate external hard drive - ie. not my own. My Macbook is working perfectly and looks and acts exactly like before. But when I plug in my external hard drive, it now doesn't show up, neither on my desktop nor in disk utility. I can see that the external hard drive is responding as a light switches on and off when I plug it in and out; I don't think it is broken as I have taken very good care of it.
I'm worried that I have formatted my external hard drive so that it will only respond to a (now old) backup of my Macbook, which I can't access from my new hard disk.
I do also have the external hard drive that my dad originally used to backup all my stuff - with the older backup. Is there a way I can have my external hard drive read the new external hard drive (with the old backup of my Macbook)?
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Jan 6, 2011
I have 100gigs of music so I successfully transferred my iTunes media to an external hard drive, and identified this new location within iTunes/Preferences/Advanced/Location. Everything worked great until I had to shut down and start up.
Now, it no longer recognizes the media library. When I try to play a track in iTunes, iTunes says the original file could not be found. It prompts me to locate this one track, which I do, and that one track will play. All of the other tracks have the (!) sign next to them in my iTunes library.
I have double checked the settings in my iTunes preferences, everything appears to be configured as when I first made the successful transfer (identifying the external hard drive as the location).
I've made sure to restart once the external hard drive is connected.
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Sep 28, 2009
I know this has been discussed before but I am completely confused. I've got some GPS maps that I want to load onto my system using the Windows side...but I want to put the maps onto my external hard drive. The hard drive has been formatted to mac
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Jul 7, 2010
Yesterday I reformatted my Macintosh hard drive, partitioned it, installed Snow Leopard on one partition and Windows 7 on the other. I installed all the drivers for Windows 7 from the Snow Leopard disc.
When I plug in my 1TB Seagate external hardrive it's not showing up in Snow Leopard or Windows 7. Not even in Disk Utility. I tried plugging the external drive into my Windows laptop and a pop-up comes up saying "USB Device Not Recognised. One of the USB devices attached to this computer has malfunctioned, and Windows does not recognise it." I think that this may just be because it's formatted to Mac OSX?
The hardrive had all of my photos, videos and music on so I hope it's salvageable. I find it hard to believe that the hard drive malfunctioned at the same time I reinstalled the software onto the iMac.
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Feb 21, 2012
I have an external hard drive I was using all morning. This afternoon, the hard drive isn't showing up on my desktop. It does show up in my system profiler under usb. When I go to disk utility to repair it, it isn't there.
Info:
MacBook Pro, Mac OS X (10.6.8)
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Dec 10, 2014
I have one hard drive that is readable and writeable on my mac desktop but read only on my mac air. I am trying to transfer all files from a couple external hard drives onto a new larger back up drive so I do not want to lose any information by reformatting.Â
Info:
iMac, OS X Mavericks (10.9.5)
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Jun 20, 2012
I have 2 Macbook Pro's, a 2009 and this brand new one I got today. My external hard drive is a 1 TB clickfree. It has worked for months on my old Mac but when I plug it into my new mac it doesn't even show up in finder or disk utility. I tried the USB ports with another device and they work fine. So it isn't a hard ware issue. The cables are USB 3.0. The external hard drive model number is HD2037N3.I have tried taking everything off (huge pain) and reformatting the drive and still it doesn't recognize it! how I can get my Mac to recognize it?
Info:
MacBook Pro with Retina display, iOS 5.1.1
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Jun 1, 2012
Startup screen is white with spinning circle. I've done all the work-around's. Won't download a new version of Lion. Disk utility says everything is fine. EVERYTHING IS NOT FINE. Can't start up from a disk. This is my 14th Mac. Kind of disapointed.
Info:iMac (21.5-inch Mid 2010), iOS 5.1.1
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May 27, 2012
I had a IBook G4 and an external hard drive as its back up.IBook running something like Snow Lepord, anyway I have a Intel Macbook now with Lion, Ive been told here there is a possible confliction between the AMP external harddrive and lion.I will say a few times I have for limited time been able to access the drive on the newer MacBook, but then Lion (I think) drops it.Â
Info:
MacBook, iOS 5.1
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Dec 7, 2014
I have a problem with an external hard drive WD Elements, fails to recognize the password I entered. you have a tip on how to retrieve it? even if it leads to the formatting of HD ...
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Jun 30, 2012
My iMac has had its hard drive renewed and now won't recognise my user/admin password. Running OSX Lion 10.7.4
Info:
iMac, Mac OS X (10.5.8)
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Jun 26, 2012
2012 iMac running 10.7.4 (lion). I have an external hard drive that I use for Time Machine. It has been working fine. Today, I turned it on to run Time Machine and the computer does not see the hard drive. I used a different cord to connect it. Still did not work. I tested both cords with a different external drive and they worked. So it is not the cords. The hard drive is getting power from its separate power cord. The hard drive knows when it is hooked up because the motor in the hard drive revs up when I plug it into the computer. However, the computer does not see it on the desktop or in finder.
Info:
iMac, Mac OS X (10.7.2)
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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? Â
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Jul 5, 2012
I was using Mail I have set up my email again, so I don't want to lose anything currently in my inbox, but want to retrieve old messages and addresses. Running 10.6.8 OS.
Info:
iMac (27-inch Late 2009), Mac OS X (10.6.8)
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Jun 12, 2012
I think that my internal hard drive crashed, my imac is 5 years old. Can I use an external hard drive for my computer? If so, what kind should I get (brand, memory size, connection - firewire, etc.)?
Info:
iMac, Mac OS X (10.6.8)
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Jul 1, 2012
I plug in a Toshiba 500 Gb External Hard drive and it doesn't show up on the desktop, in the finder window or in Disk Utility. It shows up in all those places on my work iMac and my son's laptop. why my computer doesn't recognize it?
Info:
iMac, Mac OS X (10.7.4), 2.5 GHz Intel Core i5 w/4GB memory
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Mar 28, 2012
Pretty sure my external hard drive has crashed. I have unplugged and reconnected the USB, restarted the mac but it is just gone and the Mac can't find it. Â
I keep my itunes and iphoto files on this hd. I use Time machine as the back up. My question is if I buy a new external HD, how do I recover everything from the time machine backup?
Info:
iMac, Mac OS X (10.7.3)
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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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May 21, 2012
I have a Lacie 1TB external hard drive that keeps disconnecting from my Time machine to back up data.how to remount, I can not find it anywhere .....
Info:
Macbook, Mac OS X (10.5.1)
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Jun 12, 2012
How do you back up an external hard drive? My iphoto library is on an external hard drive, and I want to make a back up.
Info:
iMac, Mac OS X (10.6.8)
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Jun 29, 2012
I purchased an external hard drive ( a Seagate 2 TB Expansion Desktop Drive) and was told by the MAC rep in the store to perform the following simple task to reformat the disk so I could drag and drop files from my iMAC and store them on the external hard drive:Â
1. Go to Disk Utility
2. Choose the External Hard Drive
3. Select Erase
4. Select MAC OS Extended (Journaled)
5. Click on Erase buttonÂ
Unfortunately when I do this, I get the following error: Disk erase Failed with Error: File system formatter failed? I have Mac OS X (10.5.8)...
Info:
iMac, Mac OS X (10.5.8)
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Mar 13, 2012
1. how i can transfer OR save my data or music to my external Hard Drive. As it keeps coming as my External drive is 'READ ONLY', when I have chnaged my 'Shared' setting sto Sharing.Â
2 I want to save my data to our 'Tera Byte External Hard Drive'?Â
Info:
iMac (21.5-inch Mid 2011), iOS 5.1
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Apr 1, 2012
I have an iMac (Mid2011). I have too many files on my hard disc and am trying to move some over to an Elements Hard drive I have connected but when I try and move them over nothing happens and it just gives a can't do sign.
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Apr 2, 2012
I had an external hard drive I used for my pc with things on there I wanted to move over to my IMac. When I try to use it, the IMac wants to wipe it clean. How do I transfer the information from the external hard drive to the IMac?
Info:
iMac
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