OS X :: External Hard Drive Not Showing - System Preference
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 9, 2009
I was zeroing out the data on my 12" PowerBook before I installed Leopard and it failed. Now my hard drive isn't showing up. What should I do?
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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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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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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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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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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 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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Oct 17, 2010
I have an old external hard drive (5yrs) that I used on a G4. I tried to plug it into my 10.5.8 and it will not register. I tried it on 3 different computers. I am tiring to use it for work (school teacher). I have an older Mac at work that it did show up on so I can get the info off.
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Feb 10, 2009
After a couple of years of lurking around, searching for myself, I finally come out and ask for some help. My questions are intertwined, and I am unsure how to break up what into what. I am lost; forgive me my ignorance.The Scenario: I just got a Mac Box Set, and want to install Leopard.1. A new 400GB Passport. Existing 350GB--relatively new, getting a little glitchy. Only has copies of pix/video data on it.2. One MacMini, one Macbook Pro.3. Would like to backup bootable volumes for both macs.
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Jul 2, 2009
Just a quick question regarding external hard drives.
Does it matter what file system the hard drive is set to for me to be able to transfer data between the uMBP and the hard drive?
Currently, my 1TB external hard drive is in NTFS, but i understand Mac use FAT32? (Please correct me if I'm wrong)
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Aug 25, 2010
I've been using a LaCie Quadra 2TB Hard drive for a little over a month now.
I've been noticing in that time that whenever I have the HD mounted my system seems to run slower in that it has lots of sporadic hang ups. I get the spinning beachball in all sorts of programs from Safari to Microsoft Word.
I am of course assuming the Hard drive is to blame, so I was wondering:
Can running an external hard drive (for use with Time Machine and general storage) slow a system down (in particular applications)?
The hard drive is a 7200rpm drive and its connected via firewire 800 if that is of any importance.
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Sep 19, 2008
I have an Iomega UltraMax 750Gb External Hard Drive set up to back up my MacBook Pro. Time Machine uses this hard drive perfectly with no problems. However whenever I want to use the drive to move files around with XP the drive does not show up in my computer. XP recognizes the connection of the hard drive and shows the name of the hard drive connected to the computer when you look at the USB BUSes but still it is not in My Computer. I have everything up to date. I have even partitioned the External Hard Drive so part of it wasn't even touched by Time Machine. Is this a problem with Time Machine formatting my external hard drive to work only for Mac
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Oct 6, 2009
I'm running out of space on my Mac Mini's disk because of all my iTunes video files. I am thinking about buying an enclosure for my spare 1 TB hard drive, and using it as the location of my iTunes library, but I wondered how it works with the Mac Mini's energy-savings mode. My Mini is set to sleep after 15 minutes of inactivity, then wake when iTunes content is requested by my Apple TV or Airport Express. I like it, because it's very energy efficient that way! My question is, will the disks also sleep along with my computer, and will they wake properly when the computer wakes?
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Mar 30, 2009
I am looking to get an external HDD for a modified mac mini. I am thinking of removing the 120gb std hdd in the mini and replacing this with a SSD, coupled with 4GB of RAM to speed things up (will be 2.26ghz). Im guessing the capacity of this will be aroung 60-80 gb and will only be used for the OS.
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Apr 12, 2010
I am a new convert to Mac, and loving every minute. I use a 21.5 iMac and my wife uses a MacBook. I am trying to figure out the best way up set up an external harddrive system that will automatically backup both Macs. But I am also trying to figure out if I can store and access music through iTunes for both Macs.
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Aug 16, 2010
I'm selling my old Powerbook G4. Before I let it go, I want to wipe the hard drive and reinstall OS 10.4. I also would like to run disk first aid because I suspect there may be some corruption. The problem: I still have the original system install DVDs that came with the laptop, but the DVD drive no longer works. It just spins the disks for a bit then spits them back out. I do have an external USB hard drive with plenty of free space. Is there a way I can copy the install DVDs (there's a Disc 1 and Disc 2) to the external hard drive, then boot from that drive and treat it like I'm installing from the DVDs? I also have my new MacBook Pro with a working DVD drive. Can I make my Powerbook boot from a CD in the MacBook's drive? If not, how else can I wipe my system and reinstall the OS without a working DVD drive?
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Sep 7, 2010
I couldn't find anything. I have a mac mini and I am going to do system restore but I was wondering if it was possible to store Microsoft Office on my external hard drive because I don't have the discs anymore.
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Feb 5, 2012
My 1 yr old mac book pro is having problems with the sound after an update to the lion software last night. The sound preference is not showing any out or in device. But, the startup chime works
Info:
MacBook
Pro, Mac OS X (10.7.3)
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Nov 12, 2009
if i delete files off my internal hard drive (Macintosh HD), will it still be on my external hard drive or will it just add to it?
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Apr 13, 2012
Basically my hard drive randomly decided not to mount. It is a 60gb USB external hard drive. I have used a different mac, a PC and both didn't mount the hard drive. On windows it can not recognize the driver to mount but on mac nothing! I even tried external power, different USB leads and a new one. Still nothing. I think it may have become corrupt.
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Aug 30, 2014
I have a MBP with a dead hard drive that I am trying to resurrect. The MBP was working one minute then it just froze up. On reboot I got the flashing folder with question mark meaning it couldn't find the OS. I tried to access the drive remotely from target mode but it wasn't listed. I pulled the drive and hooked it up to an SATA to USB cable and tried to access from other systems but again it wasn't displayed.
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Aug 29, 2014
i have a 1,5 tb usb 3.0 external hard drive that doesnt show up in finder or desktop, i dont know if it is the cable or why it appears and disappears. what should i do?
Info:
MacBook Pro, OS X Mavericks (10.9.2)
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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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Oct 14, 2009
with cloning/copying the content one an external hard drive onto a new external hard drive. Basically, I have a 500GB FW400 drive which I use to store my media files. It's full, so I purchased a 1TB FW800 drive to replace it. Obviously, I thought I could simply copy and paste the media files from the old drive to the new one.I cannot copy the media files to my internal drive first as my internal drive is only 250GB and nearly full itself.I have used Disk Utility to attempt to close the old drive to the new drive, but keep getting "insufficient space" errors.
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