MacBook Pro :: Unable To Check External Hard Disk / Cannot Find The Disk
Feb 15, 2011
I've download a Seagate Diagnostics programme to check whether my external Seagate FreeAgent Desk is working properly or not. However, when I run the programme, it indicates that cannot find the disk.
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Apr 27, 2010
I got a 500GB WD external disk for my MBP 2.2GHZ/2GB/500GB which with up-dated Snow Leopard and Windows XP pro(Boot camp). Here's wot happened and my probs:Last Tuesday I used the external disk with no problem. But on Friday the external disk is unable to be founded by MBP either in Disk Utility or Finder. I tried to switch to Windows XP where I installed MacDrive to read Mac partition under windows. The system says it cannt install the disk coz device unrecognizable. First I suspect it 's the problem with external disk enclosure but when I replaced it with another new one, problem stay still.
So here's some questions, First, is there any instruction I can take to solve the issue, or if the disk unfortunately crashed any possible chance I can rescue the data (My vital working data achieve is inside) using application or else.
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Mar 30, 2010
I'm using a macbook and would like to copy over several games over to my friend's external harddrive. The files are rather large -8gigs, 6gigs, 4gigs.
For some reason it wont allow me to copy the files to the HD. only prompting me with the message "the operation can't be completed because an unexpected error occurred (error code 0)".
I presume that it's formatted correctly because I was able to copy a smaller file (363megs) without any troubles. However, whenever it involves these large torrents it prompts me with that same message.
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Jun 27, 2014
I have a Seagate 1 TB Backup Plus Drive which was working perfectly fine until I plugged it into a USB hub. It detected it while in the hub and I was able to get files off of it, but when I ejected it from the hub and put it back into the USB slot on the computer it was not detected by finder. It shows up in the disk utility and I clicked verify and repair and it says:
Verify and Repair volume “Seagate Backup Plus Drive”
Checking file system
Volume repair complete.
Updating boot support partitions for the volume as required.
Disk Utility can’t repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files.
Is there any way to get this to work properly again? Or if not is there a way for me to recover my files on the external hard drive?
I have a Macbook PRO late 2011 running OS X Mavericks.
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Sep 9, 2014
how can I check the free space capacity of an external disk connected to my MacBook Air?
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Sep 28, 2009
My intention is to partition an external HD in half allowing it to serve as a backup for a pc running windows xp, and the other half as a backup for a mac(10.5. I am using a Seagate external HD(new) that was initially partitioned on a windows xp computer.
The 1st half of the 1TB HD was formatted in NTFS format, and the second half was erased and (I thought) reformatted in HFS plus but when I attempt to use CCC(Carbon Copy) to copy the mac 1/2 of the hard drive, I get this message:
"You may have difficulty booting from this target volume, the underlying disk is not formatted with a partitioning scheme that Apple recommends for Intel Macs."
I have read the recommendations that the external HD need to be partitioned with APM or GPT, but I cannot seem to get to that option now for the mac side of the external HD.
In the Disk Utility, the external HD shows both sections of the partitioned drive(the xp section and the leopard). I do not want to reformat the entire drive(both sections) if at all possible.
I just want the Mac side of the ext drive to be properly prepared for CCC, and the windows side to remain as is.
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Apr 11, 2010
I am considering purchasing diskwarrior but want to make sure it can help my situation before I purchase it. My imac will not boot from the internal hard drive (Intel processor) When I use disk utility to try and repair the disk, I get error messages and it won't repair. I can see the HD but cannot repair it. When I connect using target mode with my mac book pro, the hard drive does not appear on my host (macbook pro) computer. I have reloaded OS X (Leopard) onto a firewire external drive and can boot my imac that way but I can not find my original internal Macintosh HD. Will disk warrior be able to help with this scenario. I would really like to access that internal Macintosh HD and retrieve my files.
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Apr 24, 2012
I have a 2TB Western Digital My Book Studio FW800 external that has 5 partitions, connected to my 2011 iMac. I had help doing the partitions and don't really remember the reasoning, but one is just for my SuperDuper! backup, one is Miscellaneous, one for movie clips off my camcorder, one for misc scanned photo's and one for my genealogy research. I back up using Time Machine to a Time Capsule and also to this WD hard drive with SuperDuper!
Recently I'm getting a pop up message that "Mac OS X can't repair the disk "Genealogy"'. And it needs to be reformatted. It's become a read only disk. When I look in Disk Utility it shows all the partitions as "Mac OS Extended (Journaled)" EXCEPT for the one in question. I also noticed that there are a lot of files with "date created" being the same date in 1969! These files may be letters I've written or photo's I added to that partition within the last few years.
I think I have to completely reformat the entire external hard drive to repair this, but I want to make sure. Because it's going to be a major hassle backing it all up to another external (having to get one first) and then figuring out how to make the files that have turned "read only" in that one partition, back to their original state! Does this sound right, that I have to reformat the entire external hard drive? And how do I get the read-only files back to their original state.
Info:
iMac, Mac OS X (10.7.3)
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Feb 15, 2011
Recently I purchased an external hard disk, to put all of my pictures of my baby due to space limitations on my internal laptop drive. Since my Canon camera 10 megapixel pictures take up a ton of space this was occurring at an alarming rate. My intention was also to back up to DVD but never got to it. This is both a comment and a question.
Now said baby, is getting really good at pulling cords etc. He managed to do this on the external drive firewire cable. As far as i know the drive was not in the process of actually writing. However, after a few minutes and trying to re-plug the drive the OS crashed with a Grey Screen of Death hardware error that tells you that you need to push the power button..
This apparently corrupted the drive's directory. Upon reboot the drive would not mount. Since there were time machine backups on the drive too Diskwarrior was not able to reconstruct the drive in the built in memory available on the computer. Time machine stores millions of files and Diskwarrior apparently wants to keep it all in memory at once. Since my computer has 2GB you would hope that would be enough but apparently not. So that failed. Other utilities seemed to be able to find the files but not restore the directory. I also took it to the apple store they were not able to recover it.
I have to say this is extremely distressing, and hard to believe that a simple accident like this could cost the loss of thousands of pictures. I did send it to a rescue company but that was expensive but I think apple needs to do something about this situation.
On Windows there is a way to disable the write cache for external drives. This is not available for Mac OS X. This would prevent this rather common occurrence of a plug accidentally becoming disengaged when the drive is not in the process of writing. This reduces the odds but I still think apple, in order to become clearly superior, needs a better solution.
I know Apple has experimented with ZFS would this not eliminate this possibility of this kind of disaster? Is this in Snow Leopard desktop? I know they are thinking this is a business customer focused technology but clearly if it can eliminate this kind of thing then I think it is extremely useful to their non server customers. Perhaps there are other ways of dealing with this issue but ZFS is designed to deal with these issues. HFS+ is extremely fragile to disk corruption.
I know my situation is not that uncommon and this is not the first time this has happened to me with an external drive. You would think I had learned. I hate to think of how many other people have had the same thing happen to them.
Information:
MacBook Pro
Mac OS X (10.5.8)
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Nov 30, 2014
I'm using iMac 2011 model with OS Ver 10.9.5. The sharing and permissions option in the get info in External Hard disk shows "you can only read".
Info:
iMac, OS X Mavericks (10.9.5)
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Jun 9, 2009
I created an image of an external hard drive to back it up, then I checked it and it opened fine. I moved the file to another drive and initialized the original drive and dropped the dmg file back onto the drive. Now it won't open. I really need the files on that drive. Is there any way at all to open it if even for a short time to retrieve the files?
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Aug 6, 2010
I have an external 500GB Freecom USB HDD with two Data partitions on it (FAT32 and NTFS). With a Windows tool, I made the two partitions smaller in order to free up some space (ca. 200GB) for an additional Mac OS Extended (Journaled) partition. This partition I wanted to create with the Mac OSX 10.6.4 Disk Utility. When I pluged in my USB HDD in my new iMac it mounted the two partitions, NTFS and EXT32 and the Disk Utility tool also showed the free (unpartitioned, almost 200GB) space on the HDD. Then, I chose to create a new Mac OS Extended (Journaled) partition and let the tool do it. ...which I probably shouldn't have done. Disk utility stopped and showed an error message saying that it cannot read the partitions anymore and that it needs to be closed. No partitions can be mounted anymore since then on this HDD. Here is the logfile entry of Disk Utility (unfortunately, it's in German):............
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Mar 24, 2009
I received an Acomdata 2Tb external hard drive today from Amazon and plugged it in. Time Machine popped up and I declined to link the hard drive to it. I went into Disk Utility and chose the new hard drive on the left column and went to erase. I chose Mac OS Extended. I named it and hit erase. It started going, and going..... and going... and a half an hour later I knew something was wrong.
Disk Utility was not responding and I eventually had to Force Quit. Now I cannot format the hard drive. I starts and then it stops with a disk error. I tried to run the First Aid verify and repair and both stopped after a few seconds with an error. What do I do?
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Jun 29, 2014
I have a MacBook Pro running Mavericks.
Recently I noticed that if I run Check Disk in Disk Utility, all the process works correctly but at the end it doesn't tell me that everything is correct (in green).
On the contrary, if I run it in recovery mode, (reboot w cmd-r), it works correctly to the end with the correct green result at the end.
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Feb 15, 2011
i had a External Harddrive.Currently i can Read//Write on it in Windows PC(Windows7)But when i use the same drive in Mac i can only read...but can't able to write. How to resolve this issue
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Jun 5, 2014
recently the harddisk of my macbook pro crashed and I had it replaced with a SSD thinking I could use the old harddisk as an external but now it seems like the crashed harddisk cannot be detected by my macbook. What should I do?
Info:
MacBook Pro, Mac OS X (10.7)
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Mar 1, 2012
I bought my Macbook Pro 13 inc, 500 GB, i5, OS X Lion, 2 days ago and this is my first Mac .I cant see my external disk (Philips), Samsung Galaxy S by using USB ports (i tried both USB enterances, but not working). I checked my Hardware by Apple Hardware Test (extended test done) and it says 'No trouble found'I checked Utilities and USB devices are not written in the list, only 500 GB SATA disk shown. I uploaded MacFuse-Tuxera and ntfs-3g-2010 softwares for using USB devices but i cant solve the problem too... My USB devices are not shown in desktop and utilities lists How can i solve this problem, my devices work in Windows 7 - PC as usual, but in Macbook Pro, they dont work, please support me. I dont think that it can be hardware problem, Mac is new and devices are ok. Operating systems are different only.
Info:
MacBook
Pro
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Mar 11, 2012
installing an SSD in my mac pro 1.01 of 2007 afterrestarting the mac I went out one with a question mark with the famous gray screen, and I do not recognize any system disk.
Info:
Mac Pro, Mac OS X (10.7.3)
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Aug 29, 2014
I have a Macbook Pro . The hard disk failed smart disk and my laptop does not start any more. Is it ok if I replace the HDD with CGET or WD hard disk rather than the apple hard disk. the pros and cons of a non apple HDD.
Info:
MacBook Pro, OS X Mavericks (10.9.3)
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Apr 28, 2012
I have format an External Hard disk for Mac. Can you advise how to format back to FAT32 format for Window
Info:
MacBook
Pro, Mac OS X (10.7.3)
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Jun 12, 2012
I recently acquired a MAC book Pro and this being my first APPLE product - I am still learning lots abt this notebook. My question pertains to using an external hard disk in the MAC book Pro. I have a transcend external hard drive that works on the mac book pro - without my having formatted it etc. It also works on a windows system. ( I have as yet only used it to access documents that were previosly stored in the external hard disk) Can I continue using the hard disk as -is or would I still need to format the disk to make it MAC book pro friendl
Info:
MacBook Pro
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Aug 28, 2014
How do i format an external hard disk for my Mac Book Pro
Info:
MacBook Pro with Retina display, OS X Mavericks (10.9.4)
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Aug 31, 2014
After going to disk utility it refuses to repair disk. recently I have updated my Operating System. After that I am not able to connect my hard disk.
Info:
MacBook Air, Software OS X 10.9.4 (13E28)
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Aug 28, 2014
I am trying to repair my mac. But in disk utility, the hard disk is not visible to proceed. Its showing disk0 -> volume with only 1.79GB. and all the options are disabled. The capacity of my mac book pro was 500GB.
Info:
MacBook Pro, OS X Mavericks (10.9)
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May 8, 2012
how can i transfer photos to an external hard disk?
Info:
MacBook Air, Mac OS X (10.6.8)
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Jun 9, 2012
I have an external HD where I back up data from other Window laptop. when I connect this HD to Macbook, it is available as read only. I cannot copy files from my MacBook Hard disk to the external HD.
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Sep 12, 2014
I have partitioned my external Hard drive into three different partitions, each of different formats. Two partitions for backing up my macbooks and one to copy to and from my windows PC. I would just like to know if in any way is it possible for me to be able to re-partition one of the partitions, without affecting my Time machine partitions, in case the need be in future.
Info:
MacBook Pro, OS X Mavericks (10.9.4)
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Apr 10, 2009
Next year when snow leopard will be released I was thinking to upgrade my poor 60gb hard disk to something more probably to a 320 one, but I got one problem I lost my recovery disk and actually I don't really need it as you know Tiger is very stable.
When my old macbook will have inside the new hard disk do I need to reinstall tiger then upgrade it to snow leopard or I can directly install snow leopard?
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Aug 18, 2010
I have a dual 1.25 ghz MDD Powermac G4. It was working fine until a couple of days ago. It froze up, I restarted it. I got a blank blue screen.
Also, the computer made some awful clicky noises that I've never heard before.
I booted from the OS X installation CD. Disk utility lists the WD1800 hard drive, but I can't do a re-install and there's no option to repair it.
I can't erase or partition it because when I try, I get a failure message saying it can't be done ("chosen size not valid for chosen filesystem"). The HD is listed in system profiler... with a capacity of 0 bytes.
I assumed that the hard drive had died, so I went to a local PC shop and bought the only IDE drive they had (a Maxtor 6l250r0). I installed it, then booted from the OS X CD.
I know that new hard drives need to be formatted, but I assumed that this could be done with disk utility.
But disk utility can't find the new hard drive, doesn't list in the left column. It shows the optical drives and the install CD and the old WD hard drive which can't be erased or repaired, but no new hard drive.
It's not listed in the system profiler, either.
I checked the cable connections and tried installing it in the front carrier rather than the rear, but nothing works - disk utility and system profiler can't recognize it.
The only other desktop mac I have access to right now is my old 450 mhz Sawtooth G4. I tried putting the HD into the sawtooth and got the same results - disk utility and system profiler can't find the new HD at all, but has no trouble finding the old 20gb HD and the DVD and zip drives.
I'm... not really sure what to do here. Am I doing something wrong?
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May 7, 2012
I had to power off my iMac by Pressing the power key and holding it several times over the last few weeks. The last time it wouldn't reboot - I'd just get an apple icon. When I tried a safe boot I'd get the icon and it would change to a no entry sign.Next I started up from the snow leopard installation disk with the intent of repairing the iMac disk. The installation disk worked but when I opened disk utility it only found the installation disk. It didn't find the iMac disk.
Info:iMac, Mac OS X (10.6.5)
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