OS X :: Hard Drive Not Recognized By System - Hard Drive Not Formatted

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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Applications :: Recovering A Formatted Hard Drive?

Dec 5, 2008

Data Rescue II was recommended to me recently to retrieve erased files from an external 1TB hard drive, where the files were accidentally erased whilst initializing another (now discovered as a faulty) external hard drive. I was led to believe by the sales person that the lost data could be recovered completely with no change, but now since using the software it seems this is not the case. As recommended, I scanned the drive using the scan specifically for deleted files, proceeded with the recovery (happy to see it had recovered all of the expected files, plus more) but then discovered that none of the files had their original file name (everything is now renamed with numbers relating to the file, and the file type). I have tried calling ProSoft several times now during their opening hours, and sent several emails to enquire further about the recovery process, but never receive an answer.

It would be great if anyone here has had a similar/same problem or knows if there is a way of retrieving the lost files with original file names intact. I fear that this software has left me with no choice but to open each file and rename individually, which is sure to be an epic task for the amount of files that were on the drive!

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Mac Pro :: Access A PC Formatted External Hard Drive?

Jun 27, 2012

I am trying to access a PC formatted external hard drive, however when I attempt to mount it I get a message saying the drive is not recognized and if I want ti initialize, which i believe if I execute will remove the files I am trying access..Is there a way to access the files on the external hard drive...it is a avi file i need to edit.

MacPro, Mac OS X (10.6.2)

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OS X :: Hard Drive Isn't Formatted Correctly To Install Windows?

Sep 8, 2010

I just bought the 15" Macbook Pro i7 this weekend. I have a copy of Windows, and it loads up just fine. I used Bootcamp Assistant to partition my hard drive, but when I get to the windows install, it says that the hard drive isn't formatted correctly to install windows on

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OS X :: Reformat External Hard Drive - Formatted For MSDOS?

Jul 22, 2009

I try erasing it again and making sure it is formatted for MSDOS and still no luck. So I try partitioning and that is also no luck. 1 part for mac, other free space because no windows option was present

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MacBook Pro :: Formatted Hard Drive - Still 447MB Used On 2 Files?

May 17, 2010

This is what is says in disk utility? is this OK even after reformatting brand new MBP, that it still has 2 files, and used space is 447MB?

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Software :: Won't Show Up For Install / After Formatted Hard Drive

May 20, 2008

I have an old G5 I'm getting ready to sell so I wanted to format the hard drive. I went to disk utility, went through the process of erasing the disk, and then I did the thing that writes zeros over everything on your hard drive for just a fully clean formatting...

Moving on now to install Leopard (I tried Tiger too), when I get to "Select Destination to install Mac OS X", my hard drive won't show up at all. When I go to disk utility or startup disk, it only shows the Leopard disc that's in the computer at the moment. Doesn't show Mac HD or the volume or anything whatesoever...

I feel like at this point only something can be done from the Terminal, Everything I found people could still at least click on their HD in the disk until...

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Software :: Accidentally Formatted Hard Drive To FAT32

Aug 3, 2009

I was installing windows XP to my macbook pro and accidentally formated the hard drive to a FAT32, now when I go to start-up the computer all I get is the grey screen. I have tried holding the "C" key when booting with OS/X disc but nothing happens.

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Can IMac Read A Windows Formatted USB Hard Drive

Mar 29, 2012

Can an iMac read a plug and play USB hard drive that was previously used for a PC. All of my *.jpg files are backed up on the portable hard drive.

iMac, Mac OS X (10.7.3)

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MacBook Pro :: How To Install OS X Mavericks After Formatted Hard Drive

Jun 4, 2014

Yesterday i bought an Macbook pro of someone else, and today i formatted the hard drive and when i want to reinstall OS X from (OS X Utilies), is asked for apple id and password.

my own apple id is not working, and i cannot contact with him,what should i do now?

MacBook Pro, OS X Mavericks (10.9.3)

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Hardware :: Access Mac Osx Extended Formatted Hard Drive In Windows

Nov 4, 2007

when i plug in my external thats programmed to my mac, on a windows based computer i cant seem to read the hard drive. is there a program or somthing where i can detect it and transfer files between it?

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MacBook :: Transferring Files From Hard Drive Formatted For Windows To Mac

Jul 6, 2010

I figured it was the motherboard and that is way too costly to replace. So I just bought a Macbook and I'm waiting for it to arrive. I'm pretty sure that the hard drive on my pavillion is still ok, so what I've purchased a hard drive enclosure and plan to use that as an external hard drive as well as transfer my files to my new macbook. My question is whether I would be able to transfer my files from my PC hard drive to the macbook directly without formatting the hard drive because that will erase all my files.

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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 :: Transfer Files Off An External Hard Drive Formatted For Windows?

Feb 2, 2012

I just bought my first mac (yay!) and am trying to transfer my files off of my old pc. The problem is that I stored all my personal files on an external hard drive, which is of course formatted for windows. My mac will open it, but it is "read only." I tried plugging it back into my pc and using the Migration Assistant to transfer my files over, but it was not detected (rest of the pc was).

However, the second time I tried plugging it in to my pc, it told me it would need to be formatted first. Obviously my mac has changed something on it, and now all my personal files are on a hard drive that is unusable by either my old pc or my new mac!


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MacBook Pro :: Can't Transfer Stuff To External Hard Drive (NTFS Formatted)

Aug 25, 2014

My Seagate hard rive is saying that it is formatted NTFS when I plug it into my new mac. I have only ever used it on a mac and it didn't ever say this when i used it on my old computer.. Im not quite sure what to do because I have no where to put all my stuff to reformat it?

Also I made sure when I bought the hard drive that it was both windows and mac compatible...

Mac Pro, OS X Mavericks (10.9.4)

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MacBook Pro :: Transfer Mac Files Onto A Windows NTFS Formatted External Hard Drive

Dec 4, 2014

Is it possible by any means to transfer mac files onto a windows “NTFS" formatted external hard drive...??  

MacBook Pro with Retina display, OS X Mavericks (10.9.5)

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PowerPC :: Hard Drive Not Recognized?

Apr 16, 2009

I have tried troubleshooting, searching this forum, & googling to no avail. I'm hoping someone smarter than me can figure this out.

Short Version:

Purchased this hard drive:


and purchased this external enclosure:


when I plug it into my macbook, PC, or a powerbook, the disk is not recgonized, I can not get Disk Utility to even recognize that the hard drive exists. I thought it may be a bad drive, so I sent it in to Seagate Warrenty, they sent me a new one and I'm still having the same problem. Does anyone know how I can format the drive or any way I can get it to be recognized?

Longer Version:

My powerbook crashed, so I purchased this HD to replace it. I installed the 1st seagate and when i went to install OSX and said select destination drive, there was none there to select. I was able to repair the original HD so I reinstalled it and went to install OSX and it DID show the drive to install it on, so I don't think that it is the computer/motherboard. Then I sent in for the 2nd seagate, tried getting it to work with the external enclosure and installing internally in the powerbook, etc. nothing seemed to work.

I am wanting to install the new drive in the powerbook as the old drive is on its last leg (but currently works). Every thread i have searched for that was similar, there was no solution that I could use.

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OS X :: Hard Drive Not Recognized By Computer

Dec 28, 2009

I plugged in my hard drive into my Macbook Pro and it wouldn't show up on the desktop. Opened the finder, and it wasn't there either. I went into the disk utility and it was there. So then I thought maybe rebooting the computer would help. Then I plugged it into my friend's Macbook and it showed up no problem. The last time I used it I remember that error appearing where it forces you to shut off the computer. Does that have anything to do with it? I do photography and I have my entire collection on this hard drive, so restoring it is not an option. Like I said, the device was recognized and worked fine on my friend's laptop, just not on mine.

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OS X :: 1TB Hard Drive Stopped Being Recognized

Mar 20, 2010

I've had a 1TB external drive (Samsung Story) working wonderfully as a Time Machine backup for the last month. It had been unplugged for the last couple days, but I plugged it in today to do a back-up. Unfortunately, it wasn't recognized. It stills lights up and makes noises so I don't think it's dead, but no matter which USB port I put I use or how many times I restart, my MacBook won't recognize it anymore.

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OS X :: WD Hard Drive Suddenly Not Recognized?

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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MacBook Pro :: New Hard Drive Still Won't Be Recognized

Mar 8, 2012

I've been having several problems with my mid-2009 MacBook Pro; 2 minute beachballs and failure to startup. So I've purchased a new new WD Scorpio Black thinking it was a HD issue, but after replacing my old HD with the WD, Disk Utility wouldn't recognize the new drive. So I searched around and found out that Hard Drive Cable failure is an issue on this certain MacBook. So I ordered a new Hard Drive cable and just replaced that today, thinking that my new HD would be recognized. However after going into Disk Utility via the OS X Install DVD, my new Hard Drive was still not recognized.


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MacBook Pro :: New Hard Drive Not Recognized

May 27, 2012

Have a mid 2009 13" 2.26 dual core. Started getting flashing folder with question mark icon and found hard drive failed. Tried two different drives, WD Scorpio Black 750GB 3GB/s 7200rpm and Seagate 500GB 3GB/s 7200rpm. Neither is recognized by the computer. What next? And yes I have the updated firmware.

Pro, Mac OS X (10.6.5)

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OS X :: Formatted USB Drive As Free Space - Not Recognized

Jun 30, 2010

I've been having difficulties using my USB stick on windows computers, even though I formatted it as FAT (ed. I realized I had to use the Windows partition scheme and have resolved this issue). I've tried lots of things and admit that I got fed up and saw a new option today "format as free space" in disk utility.

Now the drive isn't recognized as being present at all in Disk Utility, /Volumes, and is not showing up with "diskutil list" in Terminal. I mainly want to know if it's possible to get the system to recognize that a drive is plugged in so I can reformat it with ANY filesystem. I'm pretty green to the underworkings of the mac.

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OS X V10.7 Lion :: Recover Formatted External Hard Drive With File Names And Folder Structure

May 24, 2012

I accidentally formatted my external hard drive when I was creating a Windows USB install disk with Boot Camp It was a HFS+ formatted drive with a GUID partition table and 2 partitions: one clone of my Macbook OS, and one with personal data. I'm not worried about the OS clone, I'm more concerned about getting my personal data back on the second partition.So far I've used Stellar Phoenix and Data Rescue 3. I reformatted the hard drive from FAT to HFS+ before I did these scans. Not sure if it was a good idea, but the programs wouldn't scan properly otherwise.Stellar finds my files with the original folder structure, but I can't open any of the files, even though the file sizes seem to be correct. Data Rescue partially finds the original folder structure, and also has a "Reconstructed files" section which has all my files sorted by file type and without the original file name. I really want to avoid going through all my photos, videos, etc. one by one to sort them out.

Can I still recover my files in the original folder structure? Why can Stellar find all my files basically intact, but I can't open anything? In the meantime, I'm going to try scanning with Disk Drill and FileSalvage with fingers crossed...

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Power Mac G5 :: External Hard Drive Not Recognized

Oct 9, 2007

I am a photographer. I use 4 X 1TB LaCie external hard drives to store my digital images. 2 as masters for different business segments and 2 as their back-ups. They are daisy-chained using Firewire 800. Recently my G5 has stopped recognizing one of the drives. Is there any way to get my machine to re-recognize the missing drive? I have rewired the four drives to see if there was a problem with the cabling, but this does not appear to be the case. I am coming up to the 1 year warranty period on this drive and need to get it back to LaCie if there is no other solution.

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MacBook :: External Hard Drive Not Recognized

Nov 1, 2008

I've got an external hard drive. It's a "My BooK" Western Digital 500 Gb that uses both USB and Firewire. I've used it many times successfully with my MacBook but today, my Macbook will not recognize it.

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MacBook :: Trying To Install New Hard Drive - Not Recognized

Jul 7, 2009

I have a first gen white macbook core duo. I am trying to install a new 320GB Seagate HDD in my laptop to replace the 60Gb drive. I installed it but I can't get the OS to recognize the Hard disk when it is installed in the computer. I have no problems when it is installed in an external case. I have booted off the Leopard disk but it does not show a drive available to format, I booted off the original drive in the external case and the disk utilities does not show another drive attached. If I put the 320GB drive in the external enclosure, disk utilities recognizes it right away. I have formatted it with GUID format but it doesn't work when installed directly in the macbook.

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OS X :: Mac Crashed Repeatedly / Hard Drive Not Recognized

Dec 30, 2009

I have a 2007/2008 MBP 2.4Ghz running 10.6.2. I was having repeated hard crashes
due, I think, to some stupid firefox mods I made a few days ago. Every 1-3 hours, the system would freeze, make that crackly thinking really hard noise, spin the beach ball, and wait for me to hard restart. This happens 3 or 4 times today, and on the last crash, the system hangs on restart. Grey screen, spinning grey circle of circles for 10 or so minutes. I can't wait any longer, so I hard restart again, and again the system hangs indefinitely. Now I start to get a bit worried. I boot from the Snow Leopard install disk and open disk utility. From there, I attempted to verify permissions, but the process hangs with one minute remaining for at least 20 minutes. A crash while trying to repair a crash. Great.

So I hard restart AGAIN, and open disk utility, this time selecting repair disk. The utility detects a few errors, supposedly corrects them, then hangs for about 2 minutes, finally culminating in the hard drive disappearing act. The bar looks complete, but the hard drive is gone from the list! GONE! I can't select it from the sidebar in Disk Utility. It doesn't show up in the Startup Disk menu. The only drive I can access is the dvd drive with the Leopard disk. I opened System Profiler and looked under Serial-ATA, and found the only entry was for an Intel ICH8-M ACHI. I don't remember that being there. It used to be a Matsushita drive. Can't find anything on google, and I want to do whatever I can before giving up hope on all my data. Haven't made a backup in a while.

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Hardware :: IBook Hard Drive Not Recognized?

Dec 16, 2007

I recently installed 10.5 onto my iBook G4 (933Hz 640MB) using target mode from my Mac Mini. I couldn't use the Leopard DVD install disc as it has got stuck in the Disc drive of the iBook, even though the laptop was working fine with 10.4.

When I restart it I now get a flashing question mark, i.e. the iBook can't find the hard drive. I can't use Disk Warrior as I can't use the internal disc drive.

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MacBook Pro :: External Hard Drive Is Not Recognized?

Apr 9, 2012

my new MacBook Pro not recognizing my hard drives. Yes, thats two hard drives I have that don't seem to work on this computer but both work on my older MacBook and many other computers.

MacBook, Mac OS X (10.5.8)

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