MacBook :: Suddenly Won't Recognize External Hard Drive
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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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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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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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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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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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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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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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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May 23, 2008
My Powerbook G4 (OSX10.3.9) will not recognize a Toshiba USB 2.0 external hard drive.
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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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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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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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Mar 24, 2012
My Macbook Pro suddenly won't read my 750GB WD Elements Hard drive.It was working earlier today but when I went to press play on my TV show in VLC it said the files couldn't be read. So i reopended them all and they still didn't work. I closed down all programs running that could possibly be using my hard drive but it said it was being used so I force ejected it and when I plugged it back in it didn't work.
It comes up with an error message "this disk can't be read by this computer" but it still shows up in disk utility. In disk utility though it says it is a 2.2TB hard drive which confuses me. also I the buttons for "verify disk" and "repair disk" are greyed out.
Info:MacBookPro, Mac OS X (10.6.7)
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Apr 26, 2012
My Mac book pro would not boot up. Only trouble I've had is it was getting slow to boot up I tried to reinstall OS X is it didn't show my hard drive. I put in a new 750 gig Western Digital and went to install OS X and I have the same problem I go to install and on the screen that you choose your hard drive it s
Doesn't show up. I went to disk utilities and only my DVD drive and portable hard drive shows up.
Info:
MacBook Pro, Mac OS X (10.7.3)
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Jun 30, 2012
Yesturday suddenly my macbook pro just quit on me. It got really slow, and eventually froze up, so i reset the computer, but to my suprise, it would'nt start up again, it was stuck on a BLANK loading screen, one in 5/6 times rebooting it would go to the apple logo. eventually i put in the OS disk, and again, it would'nt get past the screen even while holding down 'c' eventually after countless tries, it did get past, but now it says, "Select the disk where you want to install Mac OS X" and its not showing anything under that. I went to the disk utility, and it would not show my Macintosh Hd, so I think there is something wrong with the hard drive, but I've looked online and people have complained about it being a data ribon problem as well.
-Late 2010 model, macbook proÂ
by the way I had the newest Os installed, but I only have the Snow Leopord Cd.
Info:
MacBook Pro, Mac OS X (10.7.4), Hard drive, OS
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Dec 4, 2014
I recently had my Macbook Pro (pre-retina, 2013) checked out by Apple and was told my internal Hard Drive has packed in. I decided to buy and fit a new one myself (£100 from Apple vs £40 myself!!!) so I purchased a 2.5" 500GB SATA Hard Drive and have swapped it with the old one. I am sure I have connected it properly (I've checked 3 times) and I'm sure it is the right HDD (I checked this at the Apple Store in town). I've been told to do an Internet Recovery (Command + R at start-up) and this works fine. When I get to Disk Utility, however, to format the new drive, the drive is not recognized!! It doesn't come up as one of the options, so I cannot select it to make a partition and format the disk. Â
I am beginning to think it wasn't actually the HDD that was the issue, rather something else like the logic board?Â
Info:
MacBook Pro
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Jun 27, 2014
My MacBook Pro (15-inch Core 2 Duo) no longer recognizes it's hard drive. Placing a different hard drive doesn't work.
It won't boot off the system DVD.
It does power up, but all I get is the gray screen with the flashing question mark.
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Jan 11, 2010
I have the latest gen 15" Macbook Pro. When I first got it in September, I put an upgraded hard drive in it myself. Recently, my display went bad, so I swapped back to the old hard drive before I took it into the Apple Store for repair (so they couldn't say I had voided the warranty). They ended up replacing my display and giving me a new logic board. When I got it back, I threw in the other hard drive I usually use and now it won't recognize the millions of colors option on the Displays preferences pane. I swapped the original hard drive and I see that its registering on there, so its not the display. How can I get my upgraded hard drive to recognize the millions of colors option?
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Apr 13, 2010
My macbook hard drive crashed, luckily I had just backed up everything. I went and bought a new 320 GB hard drive, I researched and I know it's compatible with my Macbook. I decided to install windows 7 on it first, but the windows 7 installer wouldn't recognize my hard drive. (For the record, my Matsushita superdrive will not read DVDs anymore, only CDs, so I created bootable copies of both my Mac OS X install disk and my Windows 7 install disk, and I've been using a bootable rEFIt CD to boot from my USB flash drive.)
So I booted up the Mac OS X Snow Leopard disk and started disk utility - it recognizes the rEFIt CD, it recognizes the flash drive, but no internal hard drive. The partitioning tool in rEFIt doesn't recognize it either, but I know it's seated correctly because I can hear/feel it booting up with the computer (if i remove the battery and boot with the computer plugged in). I also know it works correctly because I installed it in my girlfriends PC and it recognized it just fine, I even installed Windows 7 on it, hoping the macbook would boot from it.
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Jun 21, 2014
To provide some background on my issue, my portable hard drive format was NTFS, and I wished for it to be FAT-32. I was trying to transfer some files over from my Windows computer to my Mac, however it wouldn't work due to the formatting. To change the formatting, I used some third-party software and started the conversion (without formatting the drive so that I could keep all my files) however mid way through the process, my stupid laptop entered sleep mode and stopped everything. Â
When I tried to re-plug the hard drive in my Mac, it didn't show up in the finder, but the Disk Utility did find it. The model I have is the iStorage DiskGenie portable hard drive. Â
Screen shot of Disk Utility: [URL] ......
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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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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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Jun 27, 2012
Had to "repair" my Hard drive afterward computor boots but won't recognize my usual pasword what to do_know Password is correct
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Apr 16, 2012
13 " Macbook 10.7.3 won't recognize any disks suddenly
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Aug 23, 2007
I have an external hard drive, it's formatted in NTFS, sort of like a 'bridge' between my Macbook and my Windows machine. I was able to write to the NTFS drive from my Mac using MacFUSE and NTFS-3G. A few days ago, the hard drive showed up as 'read-only', and is still that way now. I've tried repairing disk permissions, reinstalling the NTFS applications, nothing seems to change the write permissions back.
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Sep 11, 2014
I've had a 1TB external hard drive for the last year and never had a problem with it until now. Suddenly, it is showing as read-only, however, it's formatted for Mac. Do I have to re-format it?
Info:
MacBook Air, OS X Mavericks (10.9.4)
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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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