External HDs not mounting

My OP is Lion 10.7.5. I have two external HDs: one LACIE 1T which I use for Time Machine and a IOMEGA 500M which I use for my photos. Both of them stopped mounting when I upgraded to Lion. I can see them both in Disk Utility but grayed out. They both Verify fine in Disk Utility. When I tried to mount them with disk utility it does not work. I have tried everything that I could find here including Zap the PRAM and Reset the SMC. I also tried the terminal hack with sudo and still no solution. I can't believe both drives have been damaged at the same time. Any other potential solution?

anybody?

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Seagate Goflex external drive not mounting

Upgraded to Yosemite with no problems. However my Seagate 3tb external drive will not mount, but it is recognized in the disk utility and it is recognized on a pc but will not mount? Is there anything I can do? I tried the goflex thunderbolt dock, Ive tried usb, Ive plugged it into an older imac with 10.7 on it and it says "unrecognizable drive" and gives me options to initialize or eject. Is there anything I can use to just get these files off of here on win or osx?
I have also plugged in two 1tb drives seagate and toshiba and they both work perfectly. And, I have also updated the thunderbolt drivers and all that... I am at a loss of what to do next.

Okay found out the problem, on my exfat formatted drive, after I upgraded to Yosemite it basically created a new partition, a corrupted partition and would not mount my drive. However, I could open it and see it in Disk Utility.
Here's what I did to fix it:
Goto disk utility to see the name of you drive.
Open Terminal and type: sudo fsck_exfat -d disk1s1(this should be the name of your disk)
It will ask for your password then press, enter and it will display all files on the disk.
Then is will ask: Main boot drive needs to be updated?
Type: Yes
It will update and say that you can repair disk in disk utility.
Do that, and it will show up on the desktop.
Link to original forum post if you need more information:
https://discussions.apple.com/thread/4154638?start=0&tstart=0
Hope this helps, it was a headache for about a week but, Ive read osx does not handle exfat formatting very well.

External Drive not mounting anymore. HELP!

I was messing with permissions. I was trying to restrict others from using my external drive. I do know that I never removed myself. Now I see that my external LaCie 250GB drive will not mount. Both 'Disk Utility' and 'Disc Warrior' see and 'repair' the hard drive, but it still does NOT mount on the desktop. What can I do? Please help!
Robert
Dual 2.5 GHz G5 Mac OS X (10.4.3) 60GB Video iPod

I opened a 'Terminal' window and discovered that it appears I changed the owner. My username is bobbysteele. I changed it from 'admin' to my username (it's truncated - bobbyste). The permissions on the external drive are as follows:
d---rwx--- 16 bobbyste bobbyste 646 Jan 7 08:01 Jukebox01
It appears the permissions should be drwxr-xr-x because that is the setting for all other drives and folders. How can I change the permissions? Please help.

External Firewire not mounting

Since the quicktime 7.5 updater I have been unable to mount ANY firewire devices. A check of the system profiler shows under firewire,(in red) "Unable to list FireWire devices."
The same external drive when using USB 2.0 connection does indeed mount and work properly suggesting there is now a problem with both FireWire and FW800 connections. Ive tried everything listed in every forum and the issue persists. Since finding this "Warning" in the system profiler Ive decided to post with the hopes others may recognize the same issue and perhaps we can find a solution.
Onward and thanks.

Hi Dennis,
I read your thread with interest because I just installed Leopard X.5.3 on a partition on my iMac G5, and the FW 400 devices that had been working fine were not mounting. I, too, have a Belkin FW "powered" Hub, and I was beginning to think it was bad. I had even gotten the same error in red in System Profiler/Firewire/Firewire device Tree/"Unable to list Firewire Devices".
So as I wrote this note, I'd say 5 minutes after the problem started, the drive (actually a mirrored array of 2 drives) appeared. I have since tried to mount the other drives I have connected to the Belkin Hub, and they wouldn't show. I connected the hub to my other iMac and unforunately 2 of 3 Mirrored Arrays are showing as degraded. Only the 1 "good" array appeared on the Leopard install on the iMac G5.
So I guess I've got to remember to unplug devices when doing a system install? That's must be how these guys got hosed?
YMMV.
So long for now, TOM

External hard not mounting

Upgraded to Lion last night on a macbook pro. Now my external hard drives will not mount. Get the following error message. Is there a fix. Cant reformat because they are 2tb disks mainly full of data.
NTFS-3G could not mount /dev/disk2s1
at /Volumes/PenfoldPC because the following problem occurred:
/Library/Filesystems/fusefs.fs/Support/fusefs.kext failed to load - (libkern/kext) link error; check the system/kernel logs for errors or try kextutil(8).
the MacFUSE file system is not available (71)
They worked perfectly in Leopard

Your external drives must use NTFS, and you were using MacFuse to write to them, which does not support OS 10.7.x yet, i suspect this might be because it's a 32-bit kext and lion defaults to 64-bit kernel mode? don't quote me on that. But if true you might be able to use MacFuse if you force lion to boot into 32-bit kernel mode.
However it might be better to uninstall MacFuse which hasn't had a release in a long time, and use OSX Fuse instead, which is supposed to support Lion:
https://github.com/downloads/osxfuse/osxfuse/OSXFUSE.pkg
You need to uninstall MacFuse first, If you have the latest version installed then there is an uninstall button in the macfuse pref-pane (look in your system preferences), if not then you run the uninstall script manually by pasting this into your terminal (it will ask for admin password):
sudo /Library/Filesystems/fusefs.fs/Support/uninstall-macfuse-core.sh

External drives not mounting

My external drives are not mounting on my desktop. When I chekck my about this mac, more info, system report, firewire the message is Warning: Unable to list FireWire devices.
Just out of the blue my FireWire 800 externals don't mount? Have mounted all of them to my MacBookPro no problem. Not daisey chained simple front and back worked just fine now nothing.
Anyone have a solution?
Thanks in advance,
Mark

Mine take a very very long time to mount then they will not sleep even when unmounted. The firewire driver in Mavericks needs some work. If at all possible, I would use USB until the driver get's resolved.

Seagate goflex 2TB external drive not mounting Yosemite.

Hello:
I have been using a Seagate golfer 2TB external HD for time machine since 2012. No problem with subsequent OS X upgrades. My last backup was performed 3 months ago in an iMac with Mavericks. Today I have a new iMac with Yosemite. Due to the new iMacs does not have firewire connectors, I had to buy an Apple adaptor from FW to Thunderbolt. When I plugged in the HD it did not mount. Checked the cables, changed HD connector, tried my MBP, changed the cable to a USB that comes with the Seagate and nothing happened. Run disk utility and the disk appears, but the information related to storage, number of files is unavailable.
I checked in Seagate webpage and found a software called Seagate dashboard. I installed it and run test feature. After the test the HD finally mounted but came with a warning that says something like this: "OS X could not repair the disk. Backup your data and reformat the drive". Run disk utility and all the info appeared. However, when I run migration assistant to migrate all my data to the new mac, the app does not find the external HD. Tried to run Time machine and it is not found, either. The only thing that I could do is to double click the icon in desktop and found that the Backups.backupdb file is there with all my backups.
Considering that the external drive is having problem, my question is: Can I "move" the Backups.backupdb file to the desktop of the new iMac, repair or erase the external HD using disk utility and then move again the Backups.backupdb file to the EHD to see if it works?.
Thanks.
Franklin.

Thanks Dan.
While I waited for an answer I decide to install a Seagate app called "Seagate Dashboard". This app have a feature that "test" your HD. I run it and I got a message that said something like I the disk has damaged and has to be repaired, please back up your data. After that the HD finally mounted in my desktop.
So, ok I have a dilemma: try to enter in my HD and drag the files I needed or pay a specialist to fix my problem. I chose the first one, drag and drop.
And finally I had success. I could enter in the backup the Time machine did and drag all the files I needed. As a matter of fact, I tried to use Migration Assistant and it worked perfectly.
My conclusion: I had luck, the pure one.
Now I decided to have two back-up instead of one. And accident can happen again I could not have the same fortune.

External HD not mounting since update 10.9, not enough power

Hi,
I have troubles with a Lacie Rikiki USB 3.0 external hard drive since I updated to OS X mavericks: when connected via USB, the disk starts to make noise, but the LED indicator stays off. I have tried several things, from formating the disk in all available formats to downgrading the Macbook pro (mid-2010, 13inches) to OS X Mountain Lion. The disk does not mount and does not appear in the disk utility soft. I have the same problem on a late 2009 iMac, on OS X and Bootcamp since the upgrade. Apparently the disk doesn't get enough current from the USB port, but I can't figure out why.
Thanks if you have any idea.
Rémi Grosjean

If that drive doesn't work on any Mac then it might be the drive has failed. you could also try a Y USB cable that connect to 2 USB ports at the same time to supply more power to it.
Mac notebooks have always had low power output on the USB ports. Mavericks might even lower that trying to save power.

External drive not mounting

I recently got an Iomega eGo HD (160GB, FW 400/USB 2.0) for backup. I went with the FW since I learned from several Mac forums that the USB ports on my PowerBook (G4 15") were not likely to power an external HD.
Unfortunately, FW does not seem to work very well either. When I connect the portable HD to my PowerBook, there is action--the light comes on, the HD feels like it's spinning for about 5 seconds, but then it stops. The HD does not show up on my desktop, in System Profiler, or in Disk Utility.
I've done some simple troubleshooting--checked the connections, shut down my computer for 10 minutes then reboot--but that did not help. I don't have access to another computer right now so I can't determine if it's the HD itself. Iomega's site suggests that some Macs will not recognize drives over 128MB, but that appears to apply only if you're running OS X 10.2 (I have 10.4.11).
In a nutshell, the HD is not showing up at all, even though it does appear to be getting (some) power via the FW connection. Are there other things I can do? Would a smaller drive solve the problem? Do I just have to get a power cord (which I was hoping to avoid by getting a drive that had FW)? Or is this PB just inherently weak when it comes to powering external HDs? Thanks in advance.

Hi, Steve, and welcome to Apple Discussions. The symptoms are entirely consistent with the drive not getting enough power. I've seen several reports of this with Iomega drives in particular, even when they're connected via Firewire. I don't know whether Iomega uses particularly power-hungry drive units or bridge chipsets, or what the problem is with their external drives.
I recommend a) trying a different FireWire cable, and if that doesn't make any difference, b) either buying an AC adapter or returning the drive in exchange for another brand (or assembling your own from a bare drive and an external enclosure kit like this).

After Leopard upgrade external drive not mounting

Ok, after finally getting through the dead blue screen issue I have Leopard up and running.
New problem, my external USB hard drive (I/O Magic 80GB USB 2.0) will not mount. I've used this drive up to and including the day I started the upgrade as my backup drive. Now when I plug it in it does not mount, I cannot see it listed in Disk Utility and it does not show up in the System Profiler. Can anyone suggest what I need to do to get this to work?

Update:
I brought it (third time's a charm?) to the Apple Store once again: the iMac, the WD My Book, my cables, etc. They tried it; no luck. They tried the My Book in their computer (think it was a MacBook running Leopard) with my cable; showed up no prob.
One other interesting thing this tech did was look in Apple Profiler for Firewire, where there was an odd Warning in red that no Firewire devices could be found. (This while plugged in to 400 Firewire port w my cable.) Then tried it plugged in to my iMac w 800 Firewire cable; voila! It appeared! Then tried another device in the 400 slot; it showed up fine. (huh?) Tried a different 400 FW cable w My Book in iMac, no luck.
The tech looked bemused. He sold me an 800 FW cable and told me to try sending the cable back to Western Digital.
Meanwhile, twelve days after contacting WD about this problem, they responded with this link:
Thank you for contacting Western Digital Customer Service and Support and I apologize for the delayed response.
We have seen a couple of issues with Leopard.
The following link Addresses formatting issues with certain drives used with Time Machine
(specifically, single-partition MBR drives greater than 512 GB in size as well as NTFS drives of any size and partition scheme). http://docs.info.apple.com/article.html?artnum=306907
The following link addresses the latest release updates to the Leopard operating system 10.5.1. http://www.appleinsider.com/articles/07/11/12/latestmac_os_x_10_5_1_build_fixes_finder_data_lossissue.html
I haven't used Time Machine yet (will get different external for that if I decide to) so the second link was more applicable to my situation.
I did just install 10.5.1 a couple days ago, it didn't resolve this for me; since other devices worked in the 400 port, the tech thought perhaps it was a software issue...<grin>
Hope others have equally simple solutions..

External HDD not mounting; cannot use Time Machine backups

I upgraded to the Lion OSX and after that my external HDD wont mount. It shows up in Disc Utility but cannot be repaired as it won't mount (it keeps running and running the repair bar).
I followed some discussion and tried to install MacFuse and likes but it doesn't work. I could not also locate the ufsd.fs in my folder - /System/Library/filesystems/ufsd.fs - as was suggested as a remedy.
I tried this advice :
"Download and install NTFS-3G
now try this
sudo mount -t ntfs-3g /dev/disk1s1 /Volumes/usb1 "
but all i got was this message:
what is the best course of action??
thanks

Hi, and welcome to the forums.
It sounds like TM may have started a new "sequence" of backups. Try the +*Browse . . .+* option, per #E2 of the Time Machine - Troubleshooting *User Tip* at the top of this forum.

Seagate 3TB External Drive not mounting

The light is on but no-one is home. Recently upgraded iPhone4 to OS7.1.2 (which required reboot) and since then the Seagate External Drive is not mounting on the desktop. Computer details below;
MacBook Pro Model 5.5
2.26 GHZ Intel Core 2 duo
Boot rom Version: MBP55.00AC.B03
SMC Version (system) 1.4f2.
The problem started with OSX 10.6.8 (when upgraded iPhone OS), I tried Disk Utility didn't work. Have upgraded to 10.9.4 still won't show. Have check preferences, used Disk Utility & SMC reboot to no avail.
I did connect to another MacBook Pro 5.5 running OSX 10.6.8 and external drive would not mount.
Any suggestions..?? or is the external drive fried..

How old is the drive?
If you put your hand on the drive do you feel any vibrations?
Restart with drive attached. If this fails to mount the drive in Disk Utility, it sounds like the drive has died.
If you can see the drive in Disk Utility you might try Repair Drive. You might have to erase the drive to repair.

WD external drive not mounting

I just purchased a brand new WD My Passport 500GB external drive to go with my wife's new Macbook Air, which we recently updated to Mavericks 10.9.
However, the drive will not mount and is not even recognised in Disk Utility.
Any suggestions?
Ironically, her old PC formatted drive that's 5 years old mounts with no problem.

You are powering the drive from USB?
That's a terrible idea, except for travel drives.
The power consumption is at or above the maxiumum safe output for USB plugs. Its dicey for reliability and can overheat things and do damage.
So yes, either get a powered USB hub or buy a real, full-sized, plug-it-in-the-wall drive, or see if your WD drive as a power connector and yu can buy a wall adapter.
Grant

External drive not mounting after crash

I had the finder lock up on me and I had to force a restart.
At the time an external USB2 drive was plugged in. Since the forced restart the external drive is not mounting. It won't mount via USB2 or Firewire. It is formatted as Mac OS Extended.
Upon booting the computer notifies that it can't be read and asks to initialize, ignore or eject.
The system profiler sees it. Disk Utility sees it but it won't allow the options to verify or repair to be used.
Disk warrior, Drive 10, and Disk Rescue won't allow the drive to be fixed unless its mounted. In fact the drive won't even appear as an option in those programs without mounting.
So what do I have left to try?

After trial and error and moving the drive around to various enclosures I had Disk Utility open up the options to verify and repair.
It wouldn't actually fix it or go through the whole process of fixing it but that was enough to let a boot from the Disk Warrior CD see the drive as an option.
I only recovered about 60% of what was originally on it after DW redid the directory but it was at least something.
One question though what sort of issues could my boot drive's directory have that would effect the external ones? Is the corruption the fault of the internal drive?
I ask because although I've been assured that it will work fine I am running a 160G drive in a machine that only sees the first 128GB as the boot drive. I am not 100% positive that won't have some side effects but everyone around here seems to tell me its all good and that I shouldn't worry about that. Its this belief that makes me use the external drive as my torrent media drive since there is so much more reading and writing being done to it.

External HDs not showing up on computer via firewire and usb

All external hds do not show up on the computer via firewire or usb. I must have perfomed some updates with my hardware plugged in. Does anybody know how to get this fixed?

Thought you could use this info about getting FireWire to work!
First, you should always Repair Permissions in Disk Utility before and after any update; I would do that now. If you installed your update with FireWire plugged in, your Mac may not recognize it anymore.
Try resetting your FireWire ports by disconnecting all FW devices, shut down your Mac and unplug it from AC power (wall socket) for 30 minutes. plug it back in and try FW.
If that did'nt work, download the combo update from this site (yours may be corrupt), not Software Update, disconnect all firewire + USB devices except keyboard + mouse, Repair Permissions, re-install update, Repair Permissions again + try. Yours is the 10.3.9 Combo update. Others reading, download the Combo that applies to your system.
If that still did'nt get it Zap the PRAM. While restarting Mac hold down the following key combo Command-Option-P-R. Keep holding those keys down till you hear the second start-up chime, then release.
For those of you with Macs that are not PowerBooks or iBooks, a bad internal battery can cause FireWire to not be recognized, so make sure it's good!
Good Luck!
Cheers!
DALE

External HDs not mounting

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