External hard drive suddenly won't mount, but shows in Disk Utility.

Running OS 10.6.8... Disk Utility sees it and there's no issues when verified or repaired. The partition is grayed out and won't mount through Disk Utility. I've also tried mounting via Terminal, but same result. I've connected other drives, so I know it's not the wires or ports. When I turn the power on, it spins up and seems to be working properly. I don't have another mac to test it on. Any ideas would be greatly appreciated.
Here's the info from Disk Utility:
Name :     BACKUP
    Type :     Volume
    Disk Identifier :     disk1s10
    Mount Point :     Not mounted
    File System :     Mac OS Extended (Journaled)
    Connection Bus :     FireWire
    Device Tree :     IODeviceTree:/PCI0@0/RP05@1C,4/FWBR@0/FRWR@0/node@30e0f4e010a9d6/sbp-2@c000
    Writable :     Yes
    Universal Unique Identifier :     C3BC8998-F686-3A0F-A1AF-11260799EABA
    Capacity :     319.94 GB (319,937,773,568 Bytes)
    Owners Enabled :     No
    Can Turn Owners Off :     Yes
    Can Be Formatted :     Yes
    Bootable :     Yes
    Supports Journaling :     Yes
    Journaled :     No
    Disk Number :     1
    Partition Number :     10

You don't have a PowerMac if you have a Mac Pro. You don't have a PowerMac if you have Mac OS X 10.6. PowerMac is the name for the desktop professional Macs prior to mid-2006. Two possibilities, the drive is dead, or the drive has a bad directory. For a fee you can isolate either on my FAQ*:
http://www.macmaps.com/directoryfaq.html
* Links to some of my pages may give me compensation.

Similar Messages

My external hard drive suddenly won't mount.

I have a mac 0sx version 10.5.8. My WD hard drive suddenly won't mount. Tried running a repair with disc utility-no luck.

Your best bet is DiskWarrior...
http://www.alsoft.com/DiskWarrior/

External hard drive suddenly won't mount

Although I've not had a problem with this drive in the past, it all of a sudden won't mount. It has all my music on and stalled while I was using iTunes, the timer wheel came up and was still the same after 20 minutes so I closed down. Now the drive won't mount at all so I can't even try repairing the disk. I've tried swapping from firewire to USB cables and also going through a hub, neither have worked.
It's a Lacie and the power light stays continuously orange on it and it feels like it's working overtime.
PLEASE HELP!

A little bit more on this... I looked at the instructions for the Lacie and it said that some smaller laptops may require a power cable via a USB port and back into the Lacie, which now works but I'm wondering why this has happened all of a sudden and can I rectify it??
I've deleted a load of stuff off my ibook hard drive, like photos etc, thinking that would help but it hasn't. Plus, I've recently installed an extra 1gb power card.
What can I do to avoid having to plug all these peripherals in to access my music?

Lacie external hard drive suddenly won't mount on iMac 27"

Help! My back up Lacie suddenly won't mount. It shows up on my disk utility (but faded) and I tried to repair it with no benefit. I thought it might be a Lion problem, but my other Lacie is working fine. I tried using a different USB cable and unplugging everything, rebooting etc. Any help would be much appreciated.

There may be hardware problem with the drive. However you can try resetting the SMC. Don't be afraid to reset it 2-3x if the first time doesn't work.
SMC RESET
Shut down the computer.
Unplug the computer's power cord and all peripherals.
Press and hold the power button for 5 seconds.
Release the power button.
Attach the computers power cable.
Press the power button to turn on the computer.
PRAM RESET
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

External Hard Drive Suddenly won't mount except if connected via keyboard

Hi there guys. I have a generic USB 2.0 Hard drive enclosure that I've been using successfully with my Macs. Today it doesn't work, on any of them.
I connect it via USB to the back of my iMac, and it will not mount. I checked system information, and it finds: (under USB)
- USB 2.0 Storage Device
And it knows this:
USB 2.0 Storage Device:
Version: 1.03
Bus Power (mA): 500
Speed: Up to 480 Mb/sec
Product ID: 0x5621
Serial Number: 00042222200000157768
Vendor ID: 0x0402
If I plug the hard drive in through my Apple keyboard, it mounts fine, but is SUPER slow, like completely unusable. However in this case, system information says:
USB 2.0 Storage Device:
Capacity: 189.92 GB
Removable Media: Yes
Detachable Drive: Yes
BSD Name: disk1
Version: 1.03
Bus Power (mA): 100
Speed: Up to 12 Mb/sec
OS9 Drivers: No
Product ID: 0x5621
Serial Number: 00042222200000157768
S.M.A.R.T. status: Not Supported
Vendor ID: 0x0402
Volumes:
Backup Disk:
Capacity: 189.8 GB
Available: 44.78 GB
Writable: Yes
File System: Journaled HFS+
BSD Name: disk1s3
Mount Point: /Volumes/Backup Disk
So.. yeah. I've got important data on this drive, and I seriously have no idea what to do. I've read a few forum posts around the web and have seen similar problems but not solutions posted. Can anyone help?
What should I try?
-Brian

One last question have you tried theMac OS X 10.4.10 Combo Update v1.1 (Intel)
Note: What’s New in this Version
The 10.4.10 Update is recommended for PowerPC and Intel-based Mac computers currently running Mac OS X Tiger. This update includes general operating system fixes, as well as specific fixes or compatibility updates for the following applications and technologies:
- RAW camera support
- Mounting and unmounting external USB devices
- Support for 3rd party software applications
- Security updates
17" iMac Intel Core Duo - 2GB Ram - Mac OS X (10.4.10) - Maxtor 300GB FireWire - Creative Inspire 2.1 - 2G Nano

External Hard Drive Enclosure won't mount

Hi
I have a Western Digital Caviar WD3200JD 1TB SATA hard drive inside an external startech enclosure
http://www.startech.com/item-download/SAT3510U2B-35in-USB-to-SATA-External-Hard- Drive-Enclosure-with-One-Button-Backup.aspx
It won't mount on my mac, it won't recognise it in disk utility either
I mounts fine on a PC running Vista. I have formatted it as NTFS but it will still not shoe on my mac
Anything else I can try?
Thanks!

my 12 inch powerbook laptop body was no good, but the hard drive was. I had a powermac g4 tower with a bad harddrive. After researching, I found this site and I mounted the laptop harddrive into the desktop and boom! my old laptop drive booted up on the desktop powermac. here is the link. a 3 yr old can install this it is way too easy, plus it cost 99 Cents. way cheaper than buying an enclosure.
http://www.b2cshop24.com/en/hard-drive-ide-25-to-35-adapter-converter-for-laptop .html

HELP. External hard drive suddenly won't show up on Mac.

So, I left for a few minutes and when I got back, there was that warning on my screen that said the disc wasn't ejected properly, etc. Which was weird because the drive was still plugged in fine. Anyway, when this happens, I usually just pull the hard drive out then plug it back in and it works fine but now it won't show up on the desktop or on the disk utility I got it to show up on disk utility once, but the subheading under the hard drive was greyed out. I could click it but when I tried to run Verify or Repair, nothing would happen. It would show up on the history as "repaired disc" but NOTHING. And I am honestly freaking out Please help, anyone

I'd have to agree with WZZZ. That sounds like either a bad connection, bad cable, or faulty supply. The port could be bad as well but the cable either being bad or not properly plugged in or maybe even worn out. When the "disk ejected" message shows up it's usually because somehow the cable was yanked out of the system while it was plugged in. Intermittenet connections in the cable, particularly in supply lines between the drive and the unit can cause this to happen as well...it's as if you unplugged the external hard drive from the system for a very short time, but the system still picks it up and sees it as bad.
If worse comes to worse, download the hard drive troubleshooting book in the downloads section at:
http://scsc-online.com

External Hard Drive (160GB) won't mount?!

Hi focus,
I am new in MAC OS and I had some difficult to MOUNT my External HARD Drive in MAC OS TIGER 10.4.10 (all updated).
My MAC simply does not recognized my external HD, but recognize when I am using a Virtual machine (Fusion VMware) and running Windows XP. I already try to format in differents formats, FAT/FAT32/NTFS/EXT2 but nether recognize them.
So I ask, there is some "restriction" to mount external IDE drives? I try to use disk utility or ipartition or SupperDuper and no one recognize automaticly.
My original HD was partioned in 2 parts (by me) one for the system 38 GBs and other one 79 GBs for my musics and documents.
If someone has any ideias why this is happen, please help me to solve this problem. Because I need to backup all my data (no actually bootable stuffs) in this external.
Thanks,

Thanks A Brody,
But how can I format my External HD if my MAC can not recognize, even in disk util or ipartition. I think the partition Magic (for windows) can do that, but can not.
So I think, now, the Mediafour MacDrive can do that, is that real? I am Downloading one version from web and I will try in a second. For me is not a problem format in mac format and read in windows within this software, but the problem is recgnize to format in macformat.
I run windows in virtual machine and now I already Install this Macdrive, but does not work, I can not format my external drive with this software. Well I read more and more discussing foruns and also saw you tube videos about formating in mac and it is not a big deal, its should be easy, first of all if mount my external drive to just starting talking about that stuff.
I will get some other "interface" more modern and try to recognize, if do so, maybe I bougth other USB interface. But for now It is to hard stuff has an external 160GB harddrive to backup stuffs.
Thanks and if some one has other suggestion it is always welcome!

My WD hard drive won't "mount" it shows in disk utility but can't be repaired. I'm thinking this is a software issue since the disk is being recognized.

I
I have a WD drive that won't "mount". Tried repairing, turning off and back on, unplugging and nothing has worked. Can anyone help?

The WD Passport has no independent power supply, relying instead on getting power from a USB port on the computer. AS the drive ages it can need more power to spin the platter and many USB ports on notebook cannot provid that much.
Anther issue is the WD drive itself. WD uses an odd proproprietary formatting scheme that makes the drive not always behave like typical Mac drives.
If the drive contains nothing you need to access, use Disk Utility to reformat it to "Macintosh Extended (Journalled)"
If the drive contains important data, there are a couple of inexpensive ways to get more power to it:
1) Get a "Y" conenctor cable like this:
http://eshop.macsales.com/item/OWC/USB2AYMBPB/
It draws power from two USB ports and ofter that is enough to make the drive work.
2) Get a powered USB Hub:
http://eshop.macsales.com/item/NewerTech/USB2HB7PRO/
It has its own power brick and that is usually enough to get an older USB external drive recognized.

I recently deleted a partition on my mac that was intended to install windows. Now it is just blank space. I attempt to resize my Macintosh HD partition to cover entire hard drive space and hit apply but nothing happens (disk utility). Any ideas?

I have a few problems...
I wanted to make a partition to install windows, I tried to use bootcamp 5 where it wanted to partition and install windows at the same time. I do not have a cd of windows but instead had it on a flash drive. Bootcamp couldn't find it. Instead I was reading forums and found that there was another way to install windows by partioning your harddrive using the disk utility, downloading the bootcamp drivers, and installing rEFIt (an app that when starting the compouter a menu would come up to boot windows from the flashdrive). I try that and the windows install screen gets me to the point where I pick a partition. I attempt to pick the partitioned drive but a message comes up telling me that "this is of the GPT partition style" and windows cannot be installed on the drive.
So now I went back to disk utility and deleted the partition but there is still blank space. I wanted to retry and install windows through bootcamp (somehow) but a message comes up that there cannot be any partitions or that a partition must be created using bootcamp. SO i keep trying to drag the partition over the blank space and hit apply but nothing happens.
By the way I was trying to install windows 8 pro, some forums would say that you cant install win8 however I found others that said you could. How do I fix my partition and how do I use bootcamp to install windows (preferrably 8)?

Csound1 What Ive been trying to explain is that I have been running bootcamp, I open the app where the first screen is the introduction, i hit continue, the first time I select "download the latest windows support software fromm Apple" then I return and instead select "Install Windows 7." Then hit continue. The third screen is where I "Create a Partition for Windows" I set Windows to 80 gigs then hit INSTALL. As stated before Bootcamp cannot find the install drivers saying "The installer disc could not be found." My windows software is on a USB drive not a disc, I tried using a virtual disc reader to make it appear that the windows software was running on a disc, still no luck. What I would like to know is how to install windows on bootcamp.

Lacie D2 External Hard Drive suddenly won't appear on desktop or profiler??

I started my Mac today- and my external firewire 500 gig LacieD2 did not appear on my desktop. I went to Disk Utilities, and it is not showing up. In the profiler- it is listed as Unknown Device? The blue light is continually flashing. I unplugged it- turned off my computer, waited, and reconnected it. Still nothing. Is this hard drive dead? I have essential information on it that I cannot loose.

I hear it spinning- I think?
That may not be so good because it suggests the power is getting to it and it is something else more critical to the functioning of the drive that is wrong. If it is the enclosure you could try moving it out of the enclosure into a different one, or into the computer.
I just used Disk Warrior to rebuild the directory- no luck.
Ah, so did Diskwarrior see the drive? I didn't think you could see the drive in Disk Utility.
I also replaced the firewire Cable- no luck.
Good try but the flashing blue light suggested something else to me.
I'm now doing to bring it to a local Computer Store to try to retrieve the information.
Try using an application such as [Data Rescue II|http://www.prosofteng.com/products/data_rescue.php] or [FileSalvage|http://subrosasoft.com/OSXSoftware/index.php?mainpage=product_info&productsid=1]. Both have free trial versions that let you see if the software will help before you decide to buy. You will also need a second hard drive equal to or larger in size than your first drive.
I wrote to Lacie- but they are so slow in responding- it will be days.
Ummmm....

My WD 500 GB Ext. Hard drive suddenly won't mount

Hey guys,
I use a WD mybook 500 GB HD through Firewire 800 on My iMac. It is used solely as my Scratch disk for FCP. Suddenly today when i turn on the computer it dosent mount on the desktop along with the MacHD. I ve tried all the repairing permissions, Disk utility. Ive gotten so frustrated i went out and bought another HD, an Iomega. Its not showing up either. I now think its something in the Computer. I have been using the MyBook for about a year now with no problems. Side note...i tried downloading the 10.5.6 update. it hung up while "configuring Installation" Things seem to be going wrong after that. I have also already tried booting up with the Leopard disk into first aid. That didn't help either.
Any suggestions
Thanks Everyone,
Steve

the most important lesson here is that EVERY DRIVE WILL FAIL. It's the nature of the universe. Some drives will fail sooner than others, some drives will give signs that they are beginning to fail, while others will suddenly die a quick death. Do not assume that because you buy one of the brand drives that Jerry recommends that the drive will not fail, although they are definitely more dependable. I've had two drives from one of the brands Jerry mentions fail almost immediately after purchase.
You need to have a workflow that allows you to continue working when you have a drive failure. Make sure all material on video tape is captured with device control, with "abort capture on dropped frames" and "make new clip on timecode break" enabled in your preferences. This will allow you to recapture if necessary. Any files that do not originate in this manner need to be backed up (and even that can be problematic).
Also, I highly recommend you purchase diskwarrior. It's a disk repair program that does one thing and one thing only: repairs the directory structure of a drive. It will repair drives that the disk utility will not fix.

Exernal drive won't mount but seen in disk utility

2011 Macbook Pro 2.3Ghz 8Gb on OSX 10.7.2 connected Maxtor One Touch 4 750Ghz firewire drive. Has been working perfectly for 3 years.
I'm runnign Pro Tools 9. I had some issues with IK Multimedia plug-ins being de-authorized earlier today. IK suggested repairing disk permissions (which I did). Seemed to be OK, but a few hours later when I booted up the MBP it no longer recognises the drive. The drive is booting up & I've swapped out the cables, so I can rule them out.
The drive was called "PT drive". It had 3 partitions: "Rough bounces", "Samples & loops" and "PT Session drive". Now, it doesn't appear on the desktop and Pro Tools can't see it.
However, disk utility sees the drive as "750Gb Maxtor" with 3 partions: "disk1s1", "disk 1s2" and "disk1s3". All of the disk utility options are greyed out (Verify disk permissons, repair disk permissions, verify disk and reair disk) so I can't do anything with them. When I try to eject the disk, I get an error message saying the drive can;t be ejected because applications are in use. I don;t have anything running in the background.
I don't have a backup for this drive, so really need to get the problem sorted urgently. Any help greatly appreciated.
Thanks in advance.

Re-booted everything up again this morning & the extral drive has appreared again. Very strange. I've created a back up drive in case I have similar probs in the future. A lucky escape!

External Hard drive will not appear on desktop or in disk utility. HELP!?!

I moved my hard drive from upstairs to downstairs. there is no damage to the drive. Yet, now when I try to connect the drive, it powers up, but doesn't show an icon on the desktop, or an icon in the disk utility. The drive is still under warranty, but I don't want to send it back for a new one without all my info on it.
a) How can I get this drive to be recognized?
b) How can I get my files off of it before returning the drive?
Already tried:
• Disconnecting and reconnecting after powering off the computer.
• Using a different USB cable
• Using a different USB port
• Connecting to a different Mac
• Connecting to a PC laptop.

Actually, I did solve the problem myself, for free. To see if the adapter was giving enough power, I used a voltage meter. I found out the adapter I had it plugged into was actually giving TOO MUCH power. (Even though it was a 12 volt adapter, it was measuring 18 volts.) I figured out which adapter came with the drive and plugged it in using that one (also a 12 volt adapter, weird) and voilå - it appeared on the desk top as if nothing had changed. You can bet I'll be making DVD back ups tonight however, as the adapter kicking out too much voltage may have damaged the power board at some point, which may cause it to fail prematurely.
Thanks for your suggestions.

My Western Digital external hard drive suddenly stopped showing up on my Macbook Pro and disappeared from Disk Utility. It works on a PC.

My Western Digital external hard drive suddenly stopped showing up on my macbook pro and it disappeared from disk utility. I have tried making invisible files visible but nothing has worked and my hard drive shows up on a PC but not my Mac anymore.

What is the manufacturer of the external and how old is it? Does it have its own AC power supply or is it USB bus powered?

External hard drive suddenly won't mount, but shows in Disk Utility.

Similar Messages

Maybe you are looking for