MacBook Pro :: Won't Recognize External HD
May 28, 2010
I have viewed a number of topics on external HD's that can't be recognized, but can't seem to find an answer to my problem. I own a WD 500GIG External passport drive, that has worked with my MAC since I purchased it. All of a sudden yesterday when I plugged it into my macbook (in the same slot I always plug it in) I got the USB port is drawing too much power. I immediately checked forums around the net and people were saying the mother board needs replaced. Well I have a mac mini at work an a second macbook pro at home. I plugged the same HD into all three computers and got the drawing too much power.
One of my macbook pro's has firewire 800 so I tried to connect the drive using that, but now it just doesn't recognize. The lights flash on the drive as if it's mounted properly, but I can't get my computer to recognize the drive. I've been through disk utility and the drive does not show up there. I have ordered a firewire 800 to 6pin cable to attempt to connect it that way, but other than that I'm out of luck I think. I can't even get a computer to recognize the drive in order to reformat it. Has anyone ever had this problem before? If so what steps did you use to resolve it, that is if you were able to.
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Mar 6, 2012
2012 MBP, with Lion, and SSD.Connect external HDD and it does not show up anywhere.Reset PRAM, SMC, etc, new firmware upgrade, nothing.But then the other day, suddenly the external drive was recognized.I thought it had to do with the firmware upgrade, but the next day: Unrecognizable again.The issue was a 2008 Apple TV that was switched on/stand-by.Unplugging Apple TV, and the drive gets recognized.
Info:
MacBook Pro, Mac OS X (10.7.3)
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Sep 19, 2009
New macbook pro. 10.5.8.
WD external drive. Working fine yesterday. Took the Mac on the road. Unplugged everything. Did eject the WD drive before unplugging.
Set it back up and now the WD external is not recognized. Checked all the usb ports. All working with other peripherals. Checked the drive with another computer. Its fine.
Restarts, plugging and unplugging. Turning drive off and on...
Nothing seems to work.
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Apr 16, 2008
My Macbook (1.83 Ghz Intel COre Duo, Mac OSX 10.4.10) won't recognize or find my external LAcie Porshe dvd burner... Although I have used it many times since buying it 18 months ago. Suddenly, Toast doesn't seem to see it, neither does iDVD 6.0.3... The burn button doesn't activate and stays closed. The weird thing is that when I check the system profiler, it sees it. What gives?
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Mar 6, 2012
my mac book pro is not recognizing my WD 500 GB external hardrive. I checked and double checked to make sure the external was mac compatible before I bought : and it was. It also is not recongizing an WD external hardrive I borrowed from a co-worker. Here is what I have done and checked so far.
- I checked to see if the externals worked on other Mac Pros( just to double check mac compatibility)- they showed up on on 4 different Mac books.
- I checked to see if there was something wrong my usb ports. So I incerted my 4 GB flash drive in the USB port, and then my co-workers 4GB Flashdrive- My computer recognized both the devices.
- My computer was very full ( that is why I bought a bigger hardrive to back up my files) so I thought maybe there just wasnted even enough free space for my computer to recongize the devices. So I freed up 70GB of hardrive space on my mac book. - still nothing.
- I also checked to make sure I had the suggested software updates to run the drive, before I bought it.
Info:
MacBook Pro (15-inch 2.53 GHz)
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Apr 22, 2012
My macpro does not recognize my external cd/dvd disc driver to my macpro usb
Info:Mac Pro, Mac OS X (10.7.3), external driver ibm compact disc
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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 HD
Info:MacBookPro, Mac OS X (10.4.6)
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Jun 6, 2012
The external SuperDrive works great with my MacBook Air, but MBP does not recognize the hardware at all. Have tried all USB ports, have confirmed good connections.
Info:
MacBook Pro, Mac OS X (10.5.8)
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Oct 19, 2009
so just like the title says I'm having some trouble as I did a recent upgrade to snow leopard and I have been beach balling a lot. I read that I should do a fresh install and heres where I ran into problems. My external HD is not appearing in finder. It used to work just fine before and it works fine on all of my roommates macs. I tried rebooting to see if it would fix the problem and all that happened was it made my bluetooth module say it was unavailable. Anyone have any ideas on what to do?
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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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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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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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Mar 21, 2012
When my laptop stopped recognizing my external keyboard and mouse I searched the discussions and found an answer that has worked, but only temporarily. It was to do a PRAM reset 3 times and when I do this the keyboard and mouse work fine. But when I disconnect the mouse and keyboard and then later reconnect it will not recognize them. I have repeated the PRAM reset 3 times each time this has happened (4 times) and they work fine but then there is always a problem when I disconnect and reconnect.
Info:
MacBook, Mac OS X (10.5.8)
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Apr 3, 2012
macbook doesn't recognise external sandisk card reader, USB 3,in the shop said my mac with usb 2 would talk to each other, not happening, no icon on the desktop nothing.
Info:MacBook, 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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Apr 8, 2010
I've connected up my external monitor, which is a bigger Samsung 1600x900 and and I'm having some issues.. I'm trying to get the MacBook to recognize the Samsung when I plug it in and automatically adjust the settings, so I don't have to muck around with the settings every-time. Is there anyway of doing this? oh and disabling the MacBook's display so it doesn't detect it as a second monitor?
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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.
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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Sep 3, 2009
I got my new imac running leopard few months ago. I was using my WD 500GB external HDD as my backup disk for time machine etc and was working great till a few days ago. Now,when I connect(with firewire 800)- it does seem to start up but does not appear on the desk top.This happens with the USB connection as well.I first noticed the problem when time machine icon(clock) just kept rotating as if backing up,but it just kept going. this happened several times,so I restarted the imac,plugged/unplugged the WD without any joy. Now it does not even recognise it or appear on the desktop. I have checked all connections etc and all seem ok. I connected the WD to my ibook running 'panther-10.3' and it recognises it(via usb),so I presume the WD is working. The imac recognises another external HDD and appears on the desktop. Not sure what to do next,not really keen on trying a complete new reinstall just yet,and that may not even solve my problem. Otherwise the imac seems to be working all right without the WD connected to it.
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Dec 6, 2009
I formated a new 1.5TB WD hard drive, using the eSATA cable - in the FAT32 format so I can use it on my PC as well. (It was formatted on the MAC)
I was working on the Hard Drive via eSATA and the express card. Then the Hard Drive was accidentally unplugged. Subsequently, my MacBook Pro didn't like that and gave the warning message to properly eject ... too late! I restarted the MAC and it still won't recognize it - I've tried eSATA, USB, firewire- and nothing. The hard drive was all 3 connections. So, I tested the HD on a friend's MacBook Pro and the hard drive is recognized without any hesitation and it works fine. So, there is nothing wrong with the Hard Drive - its my MacBook that won't recognize it.
The HD won't even show up in disk utility of my MAC. I've restarted many many times and I've tried every port available.
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Aug 18, 2008
I've searched the threads but can't find an answer to my problem. I have two problems really but am hoping if I can fix the first, I can work out the second with existing information on the forum. I have a WD 500gb external drive which I use with my Powerbook G4 through firewire. It works fine but now I can't seem to use any other external drive. I tried connecting another WD 320 gb external drive which I am plugging in through USB, but get nothing. I also tried running my other mac (Ibook G4) in target mode to access information on its hard drive but have the same issue - the Powerbook just won't recognize/mount (i.e. I can't see it in finder or desktop or disk utilities).
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Mar 26, 2012
I recently bought my first Mac and I bought an LG CP40 blu ray player to watch and burn DVDs. I know the player works because the first thing I did was use it to install Office for Mac. I put the disk in and the install happened automatically and worked fine. My problem is I can't get the Mac to recognize that there is even an optical drive connected to it so I can't open the contents of disks or watch DVDs.
Info:
Mac mini, Mac OS X (10.7.3)
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Aug 24, 2009
I have a late 06 early 07 intel imac. My problem is I recently purchased a 1 tb Seagate external hd and the imac recognizes some folders and their contents, like pictures and a couple others but will not recognize the contents of my movies or music folders. Now I copied all of my files from a wd elements 500gig and that worked perfectly with my imac. just can't get to my music or movies. Now, I can plug the seagate back into a windows pc and it works perfectly, so i know my files are there, but love to use my mac exclusively. Also running 10.4.11
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Mar 24, 2008
Quick question. I have an imac running leapord. I also bought an external seagate harddrive to use with time machine. It was working fine for about a month then my mac stopped recognizing the external drive. Any thoughts on what has happened or did I just end up with a faulty external drive?
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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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May 6, 2010
I have moved my ITunes Library to an external hard drive, when i go to back up on Time Machine(also external drive) it wont recognise my external hard drives Itunes library (yes it is plugged in) is there any other way I can back up periodically without time machine?
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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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May 23, 2012
mac pro does not recognize external speakers. quit working for no reason
Info:
iMac (27-inch Mid 2011), Mac OS X (10.7.3)
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