MacBook Pro :: OS X Mountain Lion (10.8.5) USB External Hard Drive Not Showing Up
Aug 20, 2014
I have a Hitachi Touro USB 3.0 1TB external hard drive that has always worked on my Macbook. Formatted in FAT so it would work on both my PC and Mac. I can't remember exactly when it stopped working, but I think I had to reset my mac once as it stopped responding and the HDD was plugged in. After that it stopped showing up in Finder, but still appears in Disk Utility. It also shows up in Storage under "About This Mac". I've tried resetting my computer, ran Apple Hardware Test, and have tested the hard drive on other computers and it works fine. Just doesn't show up in Finder on my mac!!
Info:
MacBook Pro with Retina display, OS X Mountain Lion (10.8.5), 13" Late 2012 model
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Aug 28, 2014
So a couple of days ago it was fine and today it does not show up in finder, or utility disk
I am about to upgrade to Mavericks now
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Sep 8, 2014
I am having problems ejecting the external hard drive that I use to back up my laptop. It is a 2012 MacBook Pro running Mountain Lion OSX 10.8.5. My external hard drive is a WD 2 TB My Book Studio. I use it to back up my laptop with Time Machine. Every time I try to eject my disk now I am told that "The disk (Diskname) wasn't ejected because one or more programs may be using it." I have tried some solutions like to stop Spotlight from indexing the disk and to try and turn off TimeMachine, but neither of these worked. The only thing that has worked so far is to log out of my user name and log back in with a guest user and eject it from there. This takes up a lot of time and is ultimately not really a sustainable way of working on my computer.
Info:
MacBook Pro, OS X Mountain Lion (10.8.5)
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Dec 4, 2014
my External Seagate Hard drive just changed to read only on its own?
I went to get info and scrolled down to the Sharing and Permissions
But there is nothing there but a greyed out : You can only read
There are No boxes to check or uncheck, No options to change to read and write, No name of owner or ignore ownership box. NOTHING ELSE IS THERE
I have recently upgraded to Mountain Lion and am having other problems as well
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Jun 21, 2014
I replaced a 1 TB external drive partiotioned in 2 with a 3 TB extrnal drive run/store my corbon copy cloner back up and time machine.
The 3 TB drive was successfully partitioned through the disk utility and both back ups are installed and the initial back up is complete.
My question is about the 1 TB drive. I want to completely erase all data from the drive in order to use it for a different use.
Using disk utility one of the partitions deleted without incident when following the same protocol the second partition produced error messages.
Volume erase failed
Volume Erase failed with the error:
Couldn’t unmount disk.
If I try to eject the disk
It says it will not eject becaus e a program may be using it...
The only program that utilized this partition is Carbon Copy Cloner which is not being utilized on the new 3TB drive.
I do not see where there is a option to have more than on disk chosen for this purpose so am unsure why the disk utility is seeing the old partion as still in use.
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Sep 11, 2014
Since the harddrive of my IMac was full, I added an external harddrive to the system for my photos. I use another external harddrive for time machine back-ups (backing up both the IMac and external harddrive with my iPhoto libraries). Recently the EHD with my photo libraries crashed. I now want to restore it from time machine onto a new external harddrive, but am not quite sure how to do this.
Info:
iMac (21.5-inch Late 2009), OS X Mountain Lion (10.8.2)
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Mar 2, 2012
I've just brought a new external Hard drive for my mac book pro and when I put the usb cable into the laptop nothing showed up on the desktop. I waited a few minutes but nothing happen and then I turned off the computer and did it again.
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May 1, 2012
i have an external hard drive and when i plug that into the usb port, it does NOT show up as an icon on desktop.
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Feb 29, 2012
My external WD 320GB hard drive wont show up on Finder when I connect it up. Ive been having this problem ever since I pulled it out without ejecting it - I know thats bad but my macbook froze and I had no choice.
Now my external hard drive wont show up on Finder, I even tried disk utility and I was able to verify the disk & then repair it, but its like I cant use the hard drive anymore. Every time I try to add files to it or remove files my laptop freezes and I cant do anything.
Its got to the point where all I want to do now is get all my files off this external hard drive somewhow, Is there a way to get my files off this hard drive before its too late if isnt already so.
Info:
MacBook (13-inch Aluminum Late 2008)
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Aug 22, 2009
I have a Western Digital external hard drive. I just noticed that the icon was not showing up on my desktop. This could have been the case for awhile, I don't use it that often just as storage. I have restarted, unplugged and replugged many ways. I can hear it running and the light is on. It does not show up in the system profiler, I have reset the PRAM. I have not as of yet got new cables to try as this was discovered last night. Is there anything else I can try until I get new cables? Or what does this sound like to you. Also, what are the chances that the information on my drive is gone? This is the only copy I have for some work that I do.
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Mar 12, 2010
We have a 320gb external hard drive formatted in FAT32 so both the macbook and our windows computer could use the drive. We copied 5 gigs of music to the hard drive to view on the Windows computer. The computer recognizes the drive and shows that 5 gigs are being used but I cant see any of the files.
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Mar 20, 2009
I have a Toshiba 160 GB USB external HDD (no power supply required) that I use simply as a backup for some Windows programs when I am using my virtual machine. It required a double USB cable and its icon showed on both the Windows and iMAC screen until a day or so ago. It is a functioning unit when I put it on a separate PC. I have not been able to correct the problem and in viewing some of the forum items I keep seeing suggestions to view the 'System Preferences --> general' - I do not see a 'general' nor any reference in the 'apple' that refers to hard drives (external or internal).
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Apr 18, 2009
A bit of a PITA to get the external HD to show as an AirDisk. (AEBS)
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Sep 23, 2009
Recently I just converted my old PC's 250gb Hard drive into an external drive. In the beginning everything worked fine. Though I could only read the files from it on my mac, I was fine with that because there was so much old music and pictures that I wanted to get off of it. There happened to be one particular picture that I couldn't find searching through the HDD with my mac, so I thought maybe I would be able to find if I looked for it through a windows system.
So I then plugged the external into my Windows laptop. After failing to find the picture on the PC, I plugged the hard drive back into my mac, but for some reason it's not showing the files. The hard drive is being found, but when i click on them in the finder no files show! The drive is not erased because the capacity and amount free is still the same. And to put the icing on the cake when I plugged the drive back into my PC a message comes up that says "The request could not be performed because of an I/O device error".
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Nov 1, 2009
i just bought an external hard drive enclosure for a new hard drive but it doesn't show up when i plug it into my macbook. the enclosure lights up with a blue status light when i plug in the USB but it never shows in disk utility and finder. leopard is installed on the external hard drive (im trying to clone my macbook's hd). i'm thinking its the enclosure but are there any steps i can take to ensure i'm doing everything correctly? the external hard drive is working, it was installed in my macbook yesterday but i took it out because time machine restoring fails also, i plugged the external into my time capsule. the blue status light turns on meaning its plugged in but i only see my time capsule in the network
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Jul 18, 2010
I have a 1TB external LaCie hard drive. Presently, it is loaded with about 300GBs of space so I should have around 650GBs left. However, it is only showing about 240GBs left. I think the problem is that I used to use this hard drive for Time Machine backups, I deleted them via the recycle bin. I checked the recycle bin, nothing there. I verified the disk, everything ok, I repaired it as well. I even erased the empty space.
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Jun 23, 2014
I have a MacBook Air with 251 GB of hard drive space, yet I only have 3 gigabytes free. I checked all my folders and they certainly do not add up to 248 GB, so where is all of this coming from? I checked my activity monitor and there is nothing that drastically large neither.
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Aug 19, 2014
for some reason I bought the infamous 2011 mac pro, and the hard drive kept having IN/OUT problems and after it destroyed half day of work, I decided to get a new hard drive, *blue WD 500g" but i have tried EVERYTHING and i just cant install mountain lion on it.
1.- i tried forcing the recovery mode so It would connect to the internet and download mountain lion but after 10 min or so i trows the -2002f error at me
2.- I tried to use the old hard drive that i put on a external hard drive reader so I could get the recovery partition but i just keep restarting the installation no reason given
3.- downloaded the mountain lion and tried to installing it on the system hard drive of the laptop trough a computer running snow leopard but dosn't let me.
4.- tried the same thing on target mode without success
5.- using the recovery partition I used disk utility to se of the partition was locked but it was not
6.- created a different partition to see if it would install it there didn't work.
Info:
Mac Pro, iOS 6.1.6
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Dec 6, 2014
I have an external hard drive that is about one third full. Can I now partition it into 2 partitions in which the existing data is in Partition 1, and Partition 2 is empty and available for new, different data?
Info:
iMac, OS X Mountain Lion (10.8.2)
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Sep 6, 2014
l I now have to completely wipe, re-format and re-load OSX onto my iMac's internal HD, My iMac is a late 2009 27" and at present has OSX 10.8.5 loaded, ( loaded but with many miss-functions ). Prior to the problem the iMac was running OSX Lion, what version though I can't remember.I installed 10.8.5 the other day to see if that would fix things, but it hasn't. It was not a "clean install", just regular one from downloaded OSX 10.8.5.
I have run Disk Utility and TechTool Pro' 7 to try to make repairs to address the problems so far to no avail. Main problems are that my most used applications, FCP-7 Studio, Aperture and Photoshop CS5 amongst others, open but then immediately crash. I've reloaded the troubled applications, de-installed them properly with de-installation app's then clean re-installed them, but that's made no difference. They will not mount.
I reckon there must be a fault or corruption on the HD, probably caused during the Optimisation as everything was functioning well before I did that. So, the only OSX install disks I have are the original disks that came with the iMac, OSX 10.6.2 and a Snow Leopard Upgrade DVD OSX 10.6. I do have the downloaded copy of OSX Mountain Lion that I pulled from the App Store the other day and that copy is now on an external USB / Firewire 800 HD.
As I said I would like to be able to clean off the iMac's internal 2tb drive completely and install a fresh newer OSX. If I first have to load OSX.6.2 then upgrade via the App Store that's fine, but I'd rather just go straight to Mountain Lion if possible. Whatever works best. Getting rid of any corruption on the iMac's HD is the prime motivation.
All my applications and files are backed up to a 2tb LaCie external drive.The iMac has approximately 900 gb's of content onboard and the rest is free / unused space.
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Aug 31, 2014
IMac is not booting up and I need to copy all content before reinstalling operating system. I have connected iMac to MacBook via FireWire and can see the hard rive. I have copied important files, but need to copy files in trash as well. I can not find the root to the trash on the dock when going into users or anywhere else. How do I copy files from trash across to the laptop without being able to get them out of the trash from the dock?
Info:
iMac
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Aug 22, 2014
Mac Mini running 10.8.5. Time Machine will not back up brand new OWC MiniStack external HD. I've trashed TM prefs, reformatted the TM drive, verified that there are no exclusions, but it won't back up the external HD which contains only data files -- no system, no applications. TM does back up the internal HD.
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Aug 31, 2014
I was using an external drive for Time Machine for the past year and a few months On Saturday a message came up that it failed. I tried initiating the Time Machine again but failed. I decided to get a new bigger external drive to use for Time Machine. When trying to eject the external drive I was using it gives me this message:
Would it be safe just to force eject or log out and then log back in again to eject it so I can use my new external drive?
Info:
Mac mini, OS X Mountain Lion (10.8.3)
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Sep 3, 2014
My daughter's hard drive on her macbook air became full and she was unable to iMessages sent to her. I cleaned up the HD and it now has more room. How can she recover those messages she missed the HD was full? Possible? When the HD is full do the messages still live in the "cloud?"
Info:
MacBook Pro, OS X Mavericks (10.9.2)
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Jun 23, 2014
I am backing up my data from my mac book pro for a second time. I plug in my external, and it says it doesn't have enough memory to back up my computer. I have 1 TB hard drive and used about 650 MB for the first back-up. Obviously I don't have enough to back up everything for a second time. I just want to back up the new stuff. When I go to exclude the current external from the new back up, it's grayed out. Do I have to delete the contents of the hard drive and re-back up the entire computer?
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Jun 5, 2014
I have a question which I am quite unsure. I am shopping for a HDD drive (Western Digital My Book 3 TB) and was told that it cannot be reformatted to be compatible with TIme Machine.
I would like to verify if it is true.
Info:
iMac, OS X Mavericks (10.9.3)
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Jun 2, 2014
When I want to get mountain Lion, apple store telles me that I have Maverick installed. How can I charge the M Lion version to install on an external drive?
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May 12, 2012
i have this strange issue that occured just out of nowhere without me (knowingly) having contributed anything to it.yesterday i launched my iMac and my external firewire drive wasn't showing up in neither the finder nor on the desktop. i instantly thought about a hard drive crash, but soon tried other things to evaluate (or not) my guess.
for instance, i unplugged the drive waited a few minutes before i plugged it in again. since this iomega drive is also equipped with a regular usb port i also switched cables and tried connecting it via the iMac usb sockets as well as via an usb hub without any luck. the drive still won't show up. so i launched the Disk Utility, to see if the drive needs some checking/repairing, but to my surprise it wasn't showing in Disk Utility either.
thus far i only considered this to be an issue with only this particular external drive, but when i eventually switched on a 2nd external drive (this time an usb drive i use for Time Machine) that drive also refused to show up in either the Finder or the Disk Utility app.
curious as i was, i then fired up a 3rd and 4th external drive and now had all 4 drives running at the same time. none of which were showing up, just as if they weren't even connected with the iMac.
this strikes me as more than odd. i've heard about hard drive failures and crashes. they just occur over time. maybe and under some very strange coincidences it is possible that two external hard drives quit their jobs at the very same time, but seriously .... 4 of them?? i hardly think so.
well, maybe it's the iMac's usb/firewire controller that's causing the trouble, i thought. but then again, my other connected devices (iPhone, iPad, Printer, Scanner, eyeTV) are functioning and get detected just fine as far as i can tell.
i have no idea what's going on. i dismiss the idea of 4 external drives having crashed all at the same time just as much as i don't think that the iMac's usb/firewire controller has got any issues. re-formatting any of the 4 drives is out of the question and even if i'd consider such desperate measures, the Disk Utility wouldn't let me re-format anything anyhow, because the drives aren't listed there. i wish i could just use my Time Machine to resolve the issue but, as i mentioned earlier, i can't access the Time Machine because it also won't show up.
Info:
iMac, Mac OS X (10.7.4)
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May 7, 2012
My external time machine drive will not show on my imac, the disk cant be found when trying to do a backup, it is plugged in and connected can be viewed in disk utility and system profile but will not show up anywhere else, its usually visible on the desktop, ive unplugged it , turned it off and on , powered down my imac and tried viewing it in other accounts all to no avail also it cant be seen using terminal, ive used disk utility to repair and it says the drive is fine, how do i get it back to show up.
Info:iMac, Mac OS X (10.7.3)
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Jun 3, 2014
My almost new macbook pro was showing a white screen with a flashing folder with a question mark. I was able to do the internet recovery, installing OS X on my external harddrive, but how do I use my mac without the harddrive plugged in?
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