Internal / External drives not mounting.

Hi All,
I have a Mac Pro Early 2008 that has suddenly developed the problem of not showing any of the three internal hard drives or any of the connected external drives on the desktop. The system drive does appear. This is a recent development but did not happen immediately after installing 10.6.
Potentially related, I can not shut down (also recent) without forcing to with the power button. Also takes an extremely long time to power up. Five minutes or so.
So far I have attempted repairing permissions, restart, resetting the SMC, and none of these have fixed the problem. Any suggestions greatly appreciated.

Just some of my experiences:
Checkmark got lost in Finder's Pref dialog for "show drives" "show external drives"
External drives got corrupted since I turned the power off the very second the drive-symbol disappeared from my desktop = I learnt that the drive is still doing some cleanup though it does not show anymore. So give it another 30 seconds before disconnecting its power supply
Luckily I had a backup since I always run TWO backupdrives parallel as a kind of mirror. So I reformated the corrupted drive and had the same problem. Somewhere in this forum I found that a slight change in size forces Apple's drive-utility to REALLY clean up everything from scratch. So I change the partition sizes by 1MB ... now no problem anymore.
My internal drive with OSX 10.6 has also been starting very slowly. I found out that removing as many as possible caches incl. the image OSX saves whenever you close the MacBook helps. Some of that cleanup was done using TinkerTool Systems and Onyx. Others was done manually. I also deleted many preference and .plist files like those of safari or preview
Finally I deleted all stuff which might initiate time-consuming internal communication ... no automatic check for updates. All programs needing "SIMBL" and Bonjour had to go. I had forgotten some test-entries in my networks systemprefs which made the system look for network connections. It goes without saying that any "connect automatically at startup" should go as well. I also had the spotlight index redone. Microsoft's Entourage Database was also checked and compressed. At the end I checked everything with Apple's disk-utility, DiskWarrior and Onyx. Now I am back at about 50 seconds for start-up
By the way: I deleted all 20 or so RSS-feeds and removed all widgets which depend on external information (like weather, airport departure). Funny enough - since then I also have no hang-ups experienced, whenever Safari is open. Since all these little workers update in different intervals I suspect that sometimes, their updating adds up and block the MacBook for 1 Minute or so.

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SOLUTION - USB 3.0 External Drives Not Mounting on MBP Retinas - SOLUTION

So I have been having the same problem as everyone else who has issues with USB 3 external hard drives not mounting on their MBP Retinas. My friend told me to try unplugging the USB cord and plugging it back in instantly (like in half a second, so as to not let the power turn off on the drive). I had my doubts but then I tried it just now, and MY DRIVE MOUNTED.
GO TRY IT AND SEE IF IT WORKS FOR YOU!
UPDATE: I am using a powered external drive (Seagate Backup Pro 3TB). Not sure if this will work with bus powered drives, but I think it might, as my friend might have been using a bus powered drive.
Also, I just bought two Hitachi TOURO 750GB bus powered portable drives (7200rpm/USB 3.0) and they mounted perfectly without problem as soon as I plugged it in for the first time.

Roderick A. Santiano wrote:
So I have been having the same problem as everyone else who has issues with USB 3 external hard drives not mounting on their MBP Retinas. My friend told me to try unplugging the USB cord and plugging it back in instantly (like in half a second, so as to not let the power turn off on the drive)...
Did you unplug the USB cable from the computer or from the external drive? This fix has been posted here previously but it was reported that the cable had to be unplugged from the device, not the computer. If the cable was unplugged from the computer instead, the fix didn't work.

External Drive Not Mounting (iPod too)

Just got a new MacBook and when I initially attached my external drive, it mounted. I ejected it properly and when I attached it again, it no longer mounts. What happened and how to fix?
My iPod, on the other hand, never mounted.

Are you connecting the drive and iPod over firewire or over USB, Maan?
If its firewire, then it is possible that your FW port needs to be reset. To do this disconnect all devices , unplug the power adaptor and remove the battery. Wait fifteen to twenty minutes. Connect everything back up again and see if it is now working. (Mac Firewire ports are protected by a self resetting fuse. This process resets it. If possible you may want to try a new FW cable. Defective cables can often be the cause of these sorts of problems).
If it is a USB connection, try a PRAM reset - shut down the computer completely, then start up holding down the command (ie apple) option p r keys. Keep the keys pressed until the chimes have sounded three times.
If you still have no joy, post back.
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Do I need to reformat it to mount on desktop? Any help is appreciated.

A little bit, yes. What got me a little confused was that all of my 3 internal drives showed up, and I thought that by selecting it to appear on the sidebar would be visible on the desktop. Thanks again, Lion is very snappy on my early 2008 8 core 2.8, like having a new Mac .

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I had the finder lock up on me and I had to force a restart.
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Upon booting the computer notifies that it can't be read and asks to initialize, ignore or eject.
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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.

Seagate Goflex external drive not mounting

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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.

Internal hard drives not mounting on startup

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Apr 25 10:40:09 new-host-2.home fseventsd[48] <Critical>: event logs in /Volumes/Media 1/.fseventsd out of sync with volume. destroying old logs. (454 0 68038)
Apr 25 10:40:09 new-host-2.home revisiond[33] <Warning>: Had metainfo
Apr 25 10:40:09 new-host-2.home revisiond[33] <Warning>: UUIDs match!
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Apr 25 10:40:09 new-host-2.home fseventsd[48] <Critical>: creating a dls for /Volumes/Media 1 but it already has one...
Apr 25 10:40:09 new-host-2.home SecurityAgent[147] <Notice>: User info context values set for dangreene
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Thanks for your help!

Is "Media 1" the name of the volume, or is it just "Media"?

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
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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.

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..

ExFAT formatted external drive not mounting in Mavericks?

Hi all,
I'm wondering if anyone is experiencing this issue. I have an external usb drive (WD MyBook) that was formatted to the ExFAT filesystem under OS 10.8. The problem is that the drive is no longer readable by systems that have been upgraded to Mavericks. Disk utility on these systems can see the volume, but cannot mount the ExFAT partition. Disk Repar returns an error to the effect that the drive is faulty. Mind you, I can still mount this drive on any machine that is not running Mavericks, so it makes me sceptical that the drive itself is soley at fault.

peacedotnik
I'm wondering if anyone is experiencing this issue. I have an external usb drive (WD MyBook)
You should NOT connect any WD MyBook right now under Mavericks, you have a high likelihood of severe data corruption
WD is telling its customers to REMOVE WD SOFTWARE especially on WD MyBook
keep your WD MY BOOK unconnected right now until a resolution unless you have a backup of ALL DATA on your MyBook stored elsewhere
http://community.wd.com/t5/External-Drives-for-Mac/bd-p/passport_mac
Also,..
If you have a RAID setup, data corruption is possible. Exact source determination has not been made yet.
Until there is resolution, keep all RAID setups unconnected and consider other means for backup, such as simplex USB non-RAID backup.
Bill_S
Community Manager WESTERN DIGITAL
External Drives for Mac Experiencing Data Loss with Maverick OS (10/30/13)
There are reports of Western Digital and other external HDD products experiencing data loss when updating to Apple's OS X Mavericks (10.9). Western Digital is urgently investigating these reports and the possible connection to the WD Drive Manager, WD Raid Manager and WD SmartWare software applications.
Until the issue is understood and the cause identified, WD strongly urges our customers to uninstall these software applications on their systems before updating to OS X Mavericks (10.9), or delay upgrading. If you have already upgraded to Mavericks, WD recommends that you remove these applications and restart your computer. WD has removed these software applications from our web site solely as a precaution as we investigate this issue.
Wait for resolution of this occurance.
Peace

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

How do I make an internal hard drive not mount at startup?

I have an internal hard drive hooked to an ACARD ATA RAID controller that I use for backup purposes, and I would like to mount and unmount it manually. Disk Utility in OS9 and earlier had an option not to mount a disk at startup, but I see no such option in OS X.
I can manually unmount the drive in Disk Utility, but it always comes back up when I reboot. How can I keep the drive from mounting upon reboot?

I discovered this in a quick internet search.
http://www.macseven.com/files/20070719how_to_prevent_a_drive_volume_frommounting.html
Please note that I have never personally done this and am not recommending it. But maybe it will give you some guidance.
Regards,
Steve M.

Internal / External drives not mounting.

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