IMac (Intel) :: External USB Drives Unmounting And Getting Corrupted
Jun 20, 2014
I have about 6 external USB drives that are mostly 1TB or 1.5TB. I have been trying to copy files from old ones to new ones but if I plug in more than two they keep unmounting with the message that the drive was not unmounted properly and may now be damaged. I have two so far that are corrupted. I have tried three different powered USB hubs thinking it was lack of power but it made no difference. This problem occurs on my 26" iMac Running Lion and on my new PowerBookPro running Mavericks.Â
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Feb 21, 2009
Macbook Pro 17" Core 2 Duo 2.33GHz. Following a logic board replacement for a separate issue. I have two external Firewire 800 Hard drives (two separate brands and sizes) which have suddenly started unmounting randomly and giving the 'hardware removal error'. A few seconds after unmounting they mount again, only to unmount a minute later with the error again. It is now doing this in a loop.I have done the following things:
1. rebooted and checked all cable connections
2. I have tried this with the two disks plugged in separately and daisychained.
3. I have tried two separate Firewire 800 cables.
4. running the Disk Utility.
5.installing the system from scratch on a freshly formatted internal disk.
6. reinstalling again with an archive and install.
Everything seems to work fine with a Firewire 400 connection.The only software setting that I changed is to disable the "Put Hard Disks to Sleep when possible" option in the Energy Saver system prefs. Any connection? I have enabled this again and so far (a couple of hours) so good.Should I be looking at a hardware issue
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Dec 11, 2014
is there a way to speed up my mac with three external hard drives attached,at the moment my mac is taking ages to boot up, they are all 2tb drives
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Feb 28, 2010
I am running a 2007 Imac. Version 10.5.8. 2.8 GHz Intel Core 2 Duo. 4 GB 667 DDR2 SDRAM and am using my Macintosh HD as my Startup Disk.
I have been starting to have some issues with my external hard drive (500gb Western Digital, connected via USB and power supply).
I've never had a problem with it before, but now it seems that when it "mounts", it stays connected and workable for about 30 seconds and then it unmounts and dissapears and I get a "bad device removal" message.
I don't want to lose anything on the HD so for now I just turned it off. I am planning on using DiskWarrior to attempt to repair it.
If, for instance, it is "fried" and cannot stay mounted, is there any way I can transfer the info onto another HD?
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Jun 8, 2008
I am having problems ejecting/unmounting drives. When I click on the eject button, the drive/disk image disappears from the desktop but stays in the Sidebar but it becomes unselectable. The only way to remove the drive/disk image is to reboot.
MacBook Pro 15.4"
2.5 GHz Intel Core 2 Duo
2 GB 667 MHz DDR2 SDRAM
Mac OS X 10.5.3
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Jun 2, 2008
My friends iBook hard drive has crashed and I'm in the process of replacing it. However, he had a lot of important data on that hard drive that he needs recovered. Is there any software that you can recommend (for Windows or OS X) that will recover data from corrupt/bad hard drives? I have software for NTFS/FAT32 but don't know of any good ones for HFS.
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Apr 19, 2010
I was done doing various tasks on the iMac and when I decided to plug in the external hard drive for a Time Machine backup, the drive spun, but was never shown on the desktop.I also tried another external drive and had the same thing happen.
After rebooting (hey, this sounds like Windows!), the drive again showed up on the desktop and Time Machine worked fine.Is an external hard drive not showing up on the desktop a somewhat common issue?
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Mar 4, 2012
when i connect my external hard drive (2 partitions, 1 for timemachine 1 for storage) it keeps disconecting it self unapropriately.
I have the same problem with a couple of usb flash drives. There are no usb hubs involved they are inserted directly in to my mac!
Info:
iMac, Mac OS X (10.7.2)
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Mar 24, 2012
Is it possible to set up a backup between two external drives?
i use time machine to back up my imac onto an external 2T.
i also have two external 3T drives. i am looking for redundancy of data, tried software RAID and it failed. i also see some limitations with RAID that a backup would avoid.
Info:iMac, Mac OS X (10.7.3), using time machine to back up iMac
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May 22, 2012
27" mid 2011, 3.4gHz Core i7, 8GB 1333 Mhz DDR3 OS X Lion 10.7.4Â
I was experiencing intermittent problems reading a CF card through an external multicard reader. I also had connected a Seagate external hard drive. With some trial and error disconnecting, connecting and restarting, I could get the CF to read. Now I can't see any external drives - neither the CF or Seagate are recognized.
Info:
iMac, Mac OS X (10.7.4)
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Mar 3, 2010
I have a fairly new iMac that I upgraded to Snow Leopard a few months ago. It seemed to me that prior to that my external HD worked fine with Time Machine. Since then it is recognized for a short period of time when I connect it, then it disappears. I replaced it with a WD My Book. It worked perfectly for a month and now it has shut down. Has anybody had run into this before? I can't believe that every hard drive fails within a month in the same mysterious way!
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May 29, 2012
i´m trying to copy pase videos, pictures and word documents from the hard drive om my iMac to an external drive. I can't because the paste function is gray and not working. I do not understand?
Info:
iMac, iOS 5.1.1
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Jun 7, 2012
My iMac is running out of hard drive space as its the central computer we use to run Apple TV from. I woudl like to add an external hard drive and woudl prefer to plug it into one of the RJ45 ports on the time machine and save all large movie, audio and image files onto the hard drive -
Info:Time Machine, iOS 5.1.1
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Dec 2, 2010
Brought them out of storage on a very, very careful move and now some don't work which used to days ago.
- 320 GB lacie - works
- 1 TB elements works
- Samsung 2TB works
- 1TB firewire 400 WD was working, right up to tonight, and now it doesn't (not even on the USB connection instead of Fire Wire)
- 1TB WD (used for time machine) stopped working weeks agoGot a message about a device or such plugged into USB was drawing too much power earlier, first time ever
Turned the mac off, disconnected the power, held power button 5 secs and plugged in and restarted, no goodThe working ones seem to work on an unpowered hub but those not working of course don't Have searched the internet, nothing seems to be giving an answer of late for this.
Other issues starting to arise:
- DVD's won't eject from the iMac now
- Internet (Wireless lan connected to iinet DSL wireless router (BOB) drops out a lot and have to run network diagnostic all the time)These are less important, need to fix this HDD issue so I can back up with time machine and install snow leopard then develop my app)
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Feb 22, 2010
Is it possible to have an external HDD connected to an iMac or Mac Mini on a regular basis? I have a Power Mac G4, and it's always had issues with going into sleep mode when there is any external storage connected via the USB 2.0 ports (and I've put in replacement ports to try and remedy this, to no avail). The main problem is that once the system wakes up, it thinks you've improperly removed the device. Apple told me, way back, that this was normal and to just eject all external storage before going into sleep mode. Which is a pain, but looking at a new desktop Mac I would like to just get the tiny, base HDD and use a beefy external for all my media - unless this is still an acceptable norm with new macs.
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Mar 30, 2012
My iMAC will not find my external hard drives.
Info:
iMac (27-inch Mid 2011), Mac OS X (10.7.3)
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Jun 3, 2012
I am working along and all of a sudden my external hard drives are ejected for no apparent reason.
Info:iMac, Mac OS X (10.6.8), 4 GB Ram
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Jun 8, 2012
I bought an iMac about 2 weeks ago and when accessing files from external hard drives I will get the spinning beach ball and all of the programs will become unresponsive and the only way to relieve the problem is to power down the computer. We have two 3 TB Seagate HDs connected via USB.
Info:
iMac, Mac OS X (10.7.4)
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May 18, 2009
Are there any external Drawer loading drives (usb) that accept the 8cm disk as well as the standard DVD disk.
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May 25, 2012
I am a photographer. My Mac Tower and Macbook Pros display my external hard drives on the desktop. That makes workflow so much easier. I just purchased an I-Mac and have to access the external HDs through the menu. how I can display the icons for the external HDs on my desktop?Â
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Apr 5, 2012
Bought the new iMac. I have one La Cie 1-TB external HD from previous Mac that I want to hook up to this new one, plus I want to daisy chain a La Cie 160g HD to that one. What driver do I need, and how do I hook them all up?
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Jun 22, 2012
I have three external harddrives all of which are connected through different ports, all show up in finder, all show up in disk utility, but none of them will show up on my desktop. I looked at a few other posts similar to mine but the answers given to other problems have not worked. There is no way all three of my cords are causing a connection problem and I have repaired and verifyd all the drives and still nothing.
Info:
iMac, Mac OS X (10.7.4)
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Jul 4, 2012
I have two external drives daisy-chained to my iMac for Time Machine,Superduper bootable back-up and a further Superduper back-up of my old Snow Leopard drive. Since upgrading from 10.7.3 to 10.7.4 I get an irritating message each time I awake the computer from sleep that another computer is using my network and the computer name has to be changed. Changing the name as advised in Sharing of System Preferences does not solve the problem. Only disconnecting the external drives makes the warning go away but this is self defeating since I then cannot use Time Machine and/or Superduper.
Info:
iMac, Mac OS X (10.7.4)
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Nov 20, 2010
I have a 24" iMac and it was running fine the other week and now I get this annoying error=36 whenever I try to transfer large files from desktop to my external drives. It goes about 1/4 way with the transfers then stops with the error=36 message. I've tried to reset the pram but it won't let me. It just keeps on restarting to the same gray screen with the single short beep tone over and over until I let go of the option, command, P & R buttons and restarts normally but does not reset the pram.
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Oct 7, 2009
We've got a 17" G5 iMac and a 20" Intel iMac that need to switch places and users. The easiest thing for me, would be to just swap out the internal hard drives. They both have Leopard installed, but I don't know if the different processors get dedicated system software installed, or can I just swap 'em?
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Dec 1, 2014
I have just installed Windows 7 Home Basic with Paralles. Windows is working fine along with OSX. I am facing a problem.Â
1. I cant drag and drop copy from MAC to Win or reverse.
2. I cant see Mac drives from Windows also I cant see Windows desktop folder or documents folder from Mac OS.
Info:
iMac, OS X Yosemite (10.10), Mid 2011, 21.5", 12GB RAM, 500GB
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Sep 3, 2014
One of my external hard drives disappeared from my home screen, even though the disk drive is working properly. How do I get it to redisplay?
Info:
iMac, Mac OS X (10.7.5)
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Sep 15, 2009
For the past few months, I've tried to restore my iPod Classic because it randomly restarts itself, not to mention moving on the following song during the middle of a song that is already playing. However, it seems iTunes won't restore it. The following message appears every time I try to do this:
The link takes me here:
[URL]
But that website simply doesn't help me out. I've taken my iMac to a Genius and he basically said that something is corrupted in OS X. I should mention the fact that programs such as Onyx and Maintenance claim that I am not the admin when in fact, my account is the only account on the computer. The funny thing was that I created a new account and restored the iPod through there, it would work just fine.
So, besides that long explanation of my problem, is there anyway I can fix this without having to resort to placing all my files on an external and installing a clean copy of OS X? Would archiving and installing back to Leopard do the trick?
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Nov 4, 2010
I have used my first generation USB Drobo for a few years with relative success with my G5. I've now upgraded to a Mac Pro with OSX 10.6.4. I have 3 volumes on my desktop drobo 1 is for time machine, drobo 2 and 3 are backup files. I have 7.5 TBs total. Ever since the computer upgrade the Drobo (all 3 volumes) unmount and the warning window opens saying a devise was disconnected improperly. I called Drobo, they say run disc utility to repair any time that happens. So I run repair , 2 and 3 volume repair quickly, Volume 1 can take 16 or 20 hours.
I have went over this many times with Drobo, I ran a diagnostic test and sent to them, they say my drives are fine, they sent me a new power adaptor. I took Drobo home to my G5 and it ran fine for a week, I take it to work and attach it to the Mac Pro and poof, disconnects in less than an hour. Drobo wants me to reformat the machine now (I do have everything backed up on G Techs). Should I bother erasing and starting over with this or use it as an $800 paperweight?
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Feb 6, 2009
I have an iMac that runs quite slowly after a few hours use, especially when using Photoshop and other Adobe software. What happens is, the processor gets completely swamped with "System" tasks (shown in Activity Monitor as red bars), the result being that "User" tasks are slow and the mouse jumps around the screen, rendering the computer almost useless. I've done a bunch of disk utilities including Leopard's onboard Disk Utility as well as OnyX, and although some errors were found, it was nothing serious. And after repairing, problems persisted.
Now, here's the thing. When I open Console, most of the errors are Adobe-related (mostly Photoshop and Dreamweaver). And I just ran a "Validate Fonts" check in Font Book, and found 15 fonts that have "serious errors, do not use".
So, I've often heard that Leopard, Adobe CS3, and corrupted fonts are a lethal combination. Not that I'm asking anyone to diagnose my problems from across the world, but does this sound like it could be the root of my problem? And if so, what's the proper process for removing the dangerous fonts so they can't ruin anything? Do I just delete them, or do corrupted fonts cause deeper problems which might necessitate reinstallation?
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