OS X :: External Hard Drive Not Readable By Computer

Feb 8, 2010

I have an external hard drive that I have been using for back ups for several months, but now I get an error message that says, "The disk you inserted was not readable by this computer". I looked up other peoples issues with this, and they have used things like disk warrior to fix it, but I am not very interested in saving what's on the hard drive anyways. I just want to clear out the hard drive and start fresh.

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MacBook Pro :: FAT Formatted External Hard Drive Is Not Readable By This Computer

Jun 2, 2014

when I insert my 'FAT' formatted external hard drive (Samsung M3) into my mac book pro it comes up with the error message that says "the inserted disk is not readable by this computer" and I therefore cannot access the files. The story (potential further details): 

1. I had a problem with my mac where it took hours to load each time I turned it on, would only work when power was plugged in etc. so I had to reformat my mac hard drive (when I tried to veriify it said repair, that wouldn't work). So i'm starting with a recently reformatted, clean mac. 

2. Before doing this I reformatted my external hard drive (whilst on windows machine) to FAT32 (so I can use on both windows and mac) so that I could back up my files. 

3. I then transferred files from mac onto external hard drive and then also put them on a windows machine. 

4. After reformatting mac hard drive when I then tried to transfer files back onto the mac I get the 'not readable' error. 

MacBook Pro, iOS 7.1

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MacBook Pro :: Toshiba External Hard Drive - This Disk Not Readable By This Computer Message?

Dec 8, 2009

I just bought a new 1 TB external hard drive for back up purposes. When i connect it via USB to my Snow Leopard macbook pro, it gives me a "this disk not readable by this computer message". I click ignore, and it lets me do whatever i want to the disk - read, write, etc. I have tried repair disk - tells me it's good to go, and tried reformatting several times - thought not zero disk data or the 7 pass bs.

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IMac :: External Hard Drive No Longer Readable

Sep 24, 2010

I have had this WD "my book" ext. HD for about a year without a problem. Today after restarting the computer I got a notice, instead of the HD icon. On screen I got a box that said "the disk you inserted is not readable by this computer" below this was 3 options. Initialize, ignore, eject". I was afraid that initialize would erase or reformat the drive so I pressed eject, I've tried many times but still the same thing. Has my ext. HD died? Should I click initialize? All my backup data & time machine, music,etc., is on this drive, I don't know what to do.

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OS X :: How To Format External Hard Drive To NTFS To Make It Mac Readable

Jan 23, 2010

I can't manage to format my Seagate 500GB external HD correctly so it can be readable with my Macbook. I formatted like six times already in Windows 7 and XP to NTFS and still my macbook won't read it...only my Windows computers can read/write it. What am I doing wrong?

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MacBook :: External Hard Drive Made Computer Freeze Restarted, But Computer Doesn't Turn On It Just Stays Black

Mar 17, 2012

Tried to restart didn't work. Light is on, but nothing makes noise or anyhting. Been charging it for hours so it has power. Tested the chord on my ther computer and it worked


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OS X :: BootCamp Drive - Disk You Inserted Not Readable By Computer

Jan 9, 2010

I got this message every time I boot into Snow Leopard. It's the Boot Camp drive (not partition). I don't really need it in SL, but how to hide this warning?

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Mac Pro :: New Hard Drive Not Readable Or Usable

Apr 15, 2008

I installed a hard drive to a new Mac Pro, the physical install went fine. When I booted the computer, it said the drive was not readable or usable or something along that lines so I went to disk utility and erased the hard drive with the Mac OS Extended (Journaled) setting selected. Now the drive seems to work fine but I haven't tested it much. Is everything ok with this drive now? Is Journaled the best setting? Is there a better setting to use for video editing. The drive is: WD Caviar GP 500 GB SATA

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IMac PPC :: G3 Hard Drive Not Readable

Jun 28, 2012

I recently installed a hard drive from my old windows desktop into my iMac G3. I was wiping the hard drive through firewire with my PowerBook G4 and my computer froze, so I had to hold in the power button. Now the disk isn't readable and I don't know what to do.

iMac, iMac G3 No OS Installed Yet

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OS X :: Best Format For External Drive Readable In OS X And Windows?

Nov 3, 2008

I have an external drive that will need to be connected at different times to both my Mac (Leopard) and my Windows XP & Vista machines. I had it formatted for Mac OS (Journaled) but it wasn't readable in XP or Windows. So what is the best format so that all can read/write to it normally? NTFS? It needs to be able to handle larger files (4GB and bigger).

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Mac Pro :: External Backup Drive File System Readable By PC?

Sep 7, 2009

I'm considering using dedicated internal drive for TimeMachine backups and an external drive for an additional backup of photos, videos. Wondering if there is an option for formatting an external drive with a file system that could be read by a PC so that I could transfer images or videos by simply plugging the external drive into the PC.

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PowerPC :: External Hard Drive Not Recognized By Computer

Sep 19, 2010

My WD firewire 800 drive has stopped working, I can hear it spinning when I plug it in but the light doesn't come on and my computer doesn't recognize it. I've tried both the firewire and usb connections.

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Applications :: Backing Up Computer Onto External Hard Drive

Aug 11, 2010

Does anyone know of an application that will let me back up sync certain folders on my computer to my external hard drive. Because I use two different computers (iBook and a thinkpad(Windows)) I need to keep them both the same (Documents wise) So, I have an external hard drive. Which I would like to be able to sync certain folders on my ibook to my hard drive. I am running iBook G4 Mac OS X 10.4.11.

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Software :: External Hard Drive Crashing Computer

Apr 9, 2009

I have a hard drive that I connect to my computer via an IDE to USB adapter. It works quite well, most of the time. A couple days ago I tried copying a large file to the drive (which is in FAT-16 I think) and the copy froze after 28 MB. The hard drive failed to eject, so I just disconnected it without ejecting. After I dismissed the device removal warning, I immediately plugged the HD back in and opened disk utility. I tried to reformat it, but the computer froze and my screen dimmed and the warning came up telling me to reboot in several different languages.

Now, whenever I plug in the hard drive, it is not acknowledged by the computer at all. I always end up unplugging it after a couple minutes. After I unplug it, a folder with the name of the drive (which happens to be "untitled") appears on the desktop, but I can't do anything with it. This folder is classified as a disk and it is acknowledged by Disk Utility. A couple minutes after I disconnect the HD, Mac OS X always quits and I have to reboot. How can I repair this hard drive? How can I get Disk Utility to acknowledge it?

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MacBook Pro :: How To Restore Computer From External Hard Drive

Apr 10, 2012

I recently had to re install a new hard drive and I'm trying to restore my computer from my external hard drive... how do I do that?

MacBook Pro, Mac OS X (10.6.8)

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Intel Mac :: Will An USB 3 External Hard Drive Work On An USB 2 Computer?

Jun 2, 2012

I am looking to buy an external hard drive for my intel Mac and MacBook Pro to download and save some 8,000 plus photos.  My computers only have USB 2 connections.  I am finding that most new external hard drives have USB 3 connections.  Can I use an external hard drive with a USB 3 connection on my older Mac computers?  If so do I need an adapter to connect USB 3 to USB 2?

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MacBook Pro :: Why Won't Computer Recognize External Hard Drive Anymore

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.

MacBook Pro, Mac OS X (10.6.8)

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MacBook Pro :: After Downloading To External Hard Drive, Computer Won't Start Up

Jul 1, 2012

the only screen I get is the apple logo then an x, and ? mark.  it keeps repeating this. computer was new to a backup on external hard drive.  Iphotos were put on external then trashed. about 3200 images.  I thought this was slowing it up. the  macbook pro  it is non functional now. aboaut a 3-4 year old computer.

iPhone 3GS, iOS 5.0.1

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MacBook Pro :: Improperly Ejected External Hard Drive Is Not Displaying On Computer?

Jun 20, 2014

My external hard drive has been repeatedly ejected improperly and now it is not displaying on my computer, not even in disk utility.  How do I re-mount this external hard drive?  In the past when this has happened, all I had to do was go to Disk Utility or use DiskWarrior to fix the issue but now it won't even show up in either of these apps.  

2008 MacBook Pro 10.9.3, WD My Studio 1 TB External HD

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Hardware :: Speed Of Downloads From Memory Card Faster To External Hard Drive Or To Computer?

Dec 2, 2010

which is faster & more efficient? to download photo & or video content from a memory card directly to an external hard drive? or to the computers main drive & then move to the external hard drive?

I am after faster transfer/download speeds with less hang ups

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OS X :: Dropped HD And Now Not Readable By Computer

Sep 18, 2009

So, yesterday I moved my wife's iPhoto library to her WD external HD so she could install Snow Leopard on her iMac. Today I get home and she meets me in the driveway telling me that her HD fell of her filing cabinet and the computer won't recognize it. I take a look at it and here's the message I get when I plug it into the computer: <Red Stop Sign w/ "!" in the middle>

The disk you inserted was not readable by this computer. (Initialize...) (Ignore) (Eject). I am hesitant to click the (Initialize) button for fear of an accidental formatting which would subsequently erase our iPhoto library (ALL OF OUR PHOTOS -> 90GB of photos). Because Mac enthusiasts are the ultimate community and are very resourceful on the whole, I felt it would be most prudent to put this query to the monitors of these boards.

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Applications :: If I Delete Files Off My Internal Hard Drive, Will It Still Be On My External Hard Drive

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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IMac PPC :: Disk Inserted Was Not Readable By Computer

May 29, 2012

I have a Seagate HD attached to my computer that was working fine with my old iMac, but when I just upgraded to a new iMac Version 10.7.4, 3.4 GHz Intel Core i7, it seems to be doing something srewy. I use that disk for my "Backup" files. Since I have switched it to the new computer, the backups continue to fail. An error message comes up saying "The disk you inserted was not readable by this computer." I tried to repair the disk, but I get an error message that states that the drive cannot be unmounted.

PowerPC G5, Mac OS X (10.3.9)

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MacBook Pro :: Disk You Inserted Is Not Readable By This Computer

Aug 30, 2014

I have a Macbook Pro with an External 2TB My Book for Mac Hard drive. I used it earlier this week, ejected and disconnected it, went to sleep and then tried to use it the next day and the error message: "The disk you inserted is not readable by this computer." popped up. I have checked partitions, firmware, etc. and all are showing that it is there. It no longer shows up in Finder, though DiskUtility does show it, though it doesn't show any of the partitions, etc. it doesn't even have the name of what I called it. 

- I am trying to get access to my files, I NEED them, (don't we all?!?) But seriously, these have hundreds of photos and videos of my college seminary on them and we need them for our 10- year anniversary. 

MacBook Pro, OS X Mavericks (10.9.2)

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MacBook Pro :: Error - The Disk You Inserted Was Not Readable By This Computer

Feb 3, 2012

I have been getting an error message each time I connect an external HD to my MBP; "The disk you inserted was not readable by this computer." which allows for 'Ignore' or 'Eject', I typically ignore and all appears to run fine, but still there is something obviously off a bit, incidentally the HD is a WD 640Gb that has my iTunes library?

MacBook Pro, Mac OS X (10.7.3)

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MacBook Pro :: Error - The Disk You Inserted Was Not Readable By This Computer.

Apr 10, 2012

I recently had a friend fill my hard drive with movies and DVD's. Until this morning I had no problem with viewing the files on my computer and through my tv, other than the fact that I had to download VLC player on my computer as the files were all avi. Last night I noticed that two of the individual files either wouldn't load, or dropped out half way through. I fixed these files by repairing them individually, which solved the problem. This afternoon, my files were working perfectly, with no problems at all.  

Tonight, I have gone to plug in my hard drive, and it won't recognise it at all, other than to tell me that the disk I inserted was not readable by the computer. This afternoon my Mac suddenly needed to restart, the grey screen came over and I had no option but to restart my computer by pressing and holding the power button. This has happened before, but hasn't seemed to affect anything? 

I've tried restarting the computer and changing the hard drive into a different USB port but neither have made any difference. I've also tried to repair disk in Disk Utility, which hasn't worked either. Is there a way to fix this? Or at least get the files off the hard drive onto another hard drive? The hard drive won't show in Finder so I don't know how to back up the files as Disk Utility suggests I do. The hard drive is a HP SimpleSave, about 2 years old. Never had any problem with it before! 

Mac OS X (10.6.8)

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OS X :: How To Clon And Copy The Content From One An External Hard Drive To New Hard Drive

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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MacBook Pro :: Cloning Entire Hard Drive To An External Hard Drive

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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IMac PPC :: Make Hard Drive Into An External Hard Drive

Mar 1, 2012

I've had a lot of problems with my iMac G5 power supply and since I have newer computers I've decided to get rid of this computer. 

I want to save the hard drive and put it in a case, then use it as an external drive on my other Macs. 

What sort of case do I need to shop for? Should I look for SATA or what exactly is the proper nomenclature. 

Is USB 2 the preferred choice, or Firewire, or what? Is there a USB 3? I use a mid-2010 27 inch iMac with the intel processor, and I needed to buy an adapter to use my older Firewire external drive. Is Firewire a dodo? 

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Power Mac :: Back Up Hard Drive To An External Hard Drive?

Apr 12, 2012

I need to back up hard drive to an external hard drive. How can I do this automactically? 

Powermac g5

Mac OS X (10.4.11)

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