Internal Hard Drive Not Mounting

Hi,
I've recently had a problem with my 2009 Mac Pro 8 core. One of the internal drives didn't mount or show up in any of the menus/disk utility. I tried moving the drive to another bay and it then mounted correctly. I installed other drives in the same bay and none of them show up so I presume there is something wrong with that particular bay.
I have a feeling that a trip to the Apple Store is needed but as I'm not particulary weathy at the moment I was wondering if anyone had had any similar problems. I've read on another thread that sometimes the connection to the motherboard/power can come loose but the information on finding it and plugging it back in properly was for a Mac Pro 1.1 (different internal layout).
Any help would be greatly appreciated.
Thanks
J

Hi,
Thanks for the reply. I've finally managed to pick up some compressed air and have a look as you suggested. Doesn't seem to have made a difference though.
I guess I'll have to pop it into Apple for them to have a look.
Thanks anyway
J

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Internal hard drives not mounting on startup

Problem: I recently did a clean install of Mac OS X 10.8 Mountain Lion on my Early 2008 Mac Pro. Since then, one or more of my four internal hard drives will not mount at startup, and it's seemingly random which ones will or won't mount; it differs from one startup to the next. Obviously, the boot drive starts up, but the remaining three drives are hit-or-miss.
Troubleshooting So Far: I can open Disk Utility and mount the disk(s) manually, and when I click Verify Disk, the hardware checks out okay. After my most recent startup, I brought up the System Log in Terminal (sudo syslog -B) and found this entry for one disk ("Media 1") that did not mount:
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!
Apr 25 10:40:09 new-host-2.home fseventsd[48] <Critical>: log dir: /Volumes/Media 1/.fseventsd getting new uuid: 1D55396E-183E-42AA-B788-FEFFF8694C10
Apr 25 10:40:09 new-host-2.home fseventsd[48] <Critical>: Events arrived for /Volumes/Media 1 after an unmount request! Re-initializing.
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
Apr 25 10:40:09 new-host-2.home fseventsd[48] <Error>: disk logger: failed to open output file /Volumes/Media 1/.fseventsd/0000000000000c6d (No such file or directory). mount point /Volumes/Media 1/.fseventsd
There were no entries for the disks that mounted correctly. Can anyone make sense of this for me? The system jargon is a little beyond me.
Thanks for your help!

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

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.

Hard Drives not mounting

Hi there...I have a QuickSilver 2001 G4 Tower with two internal 60GB HD and one External Wester Digital 120 GB HD which is my boot drive. For a few weeks my internal hard drives would sometimes mount and sometimes not. Now they completely are not showing on the desktop or in any Disk Utilities I have. I examined the ribbon cable and notice that it goes right over the hinge on the G4 door to access the innards of the Mac. There seems to be a dimple in the cable as well as a break in the cable right in one of the cable strands. It is about 1/8" to 1/4" long.
Thinking I had some file issue I did a files system check (command-S, fsck, etc.). Before it ran the file check, One of the lines read:
IOATA Controller Device Blocking BUS
My assumption is that the break in the cable is preventing the signal from getting from or to the drives. Could this be the problem.
Also, my son picked up a seagate 60 GB Hard Drive from a friend that was formatted for a PC and had a ton of software on it. On the chance It might work, I hooked it up to the extra power cable and used the ribbon cable. Now the interesting thing is that it worked. Hole in the cable and all. The only thing I did not do, now that I think about it, was to try the other connector of the two head ribbon cable.
My question is: Is there any way to install this other HD inside my case without going though an interal SCSI bus?
Also, is there a way to get around the 128 GB limitation of internal drives. From the system profiler, my machine has these specs:
Machine Name: Power Mac G4
Machine Model: PowerMac3,5
CPU Type: PowerPC G4 (2.1)
Number Of CPUs: 1
CPU Speed: 867 MHz
L2 Cache (per CPU): 256 KB
L3 Cache (per CPU): 2 MB
Memory: 1.5 GB
Bus Speed: 133 MHz
Boot ROM Version: 4.2.3f1
Serial Number:
Any Help would be appreciated. Thanks
Al Hartman
G4 Quicksilver 2001 Mac OS X (10.4.3) SCSI Card, GeForce2 MX, Internal Zip, 2 60gb Internal HD, 1 120gb external HD, 1.5gb of RAM

John...your help has been...well, HELPFUL! LOL
Another question. I have been doing video editing and DVD creation with the Apple Pro Tools...however, my machine is only a 867 mHz and I have limitations on using Motion and HD DVD creation. I have seen much discussion here about processor upgrades. I was wondering if you had any suggestions on that subject. I am kinda partial to Sonnett Technologies hardware. But I want to be sure it will work with the Pro Tools since I have read that some have had issues with some processor upgrades.
I also have a UMAX S900 clone which has a Sonnett Technologies upgrade card which has worked flawlessly (btw, I use the UMAX for all my system 9 work. I figure why clog up my G4 with all that other stuff? I have installed all my System 9 programs including PageMaker 4.2-- wow! I was surprised when that installed!). I had some old files in PageMaker 3. or 2 or something and could not open them with InDesign or Quark or PageMaker 6.5. I looked in my disk storage case and, lo and behold, my original back-up floppies (remember those) when I bought the 4.2 upgrade. Man did that bring back memories-- swapping disks to install-- SEVEN OF THEM!
Once again, I appreciate your help and hope you can supply some additional insights. I am going to pop off those connectors on the internal hard disks and reinstall...maybe something is just loose. I am not thinking it is the controller on the board. If it was, the PC disk would not have mounted...right?
Al

IMac G5 Internal Hard Drive Not Recognized

I shut down my iMac G5 with the power button and not through the typical shutdown procedure once and then when it booted up it would not get past the gray screen. I eventually used the Leopard DVD to try to boot it and was able to get to disk utility to look at the drive. I tried to repair the drive but then the machine froze and I had to restart once more. Now the internal hard drive isn't recognized or seen at all. I actually switched out the SATA hard drive with another spare I had and that was not recognized either. I can get the mac to recognize the installation DVD still so I know my computer still functions properly but I just need it to recognize the drive now. Does anyone have any ideas how to resolve this?

Have you access to DiskWarrior or TechToolPro? Either of those might fix your problem otherwise, try booting from the Apple Hardware Test on your install disc and see what it says.

Internal Hard Drive Not Appearing in Finder

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etcetera25 wrote:
The drive is a goner otherwise though. Since I was solely using this failed drive recently, I may have just worn it out, which is too bad, even though I worked with an identical 2 TB WD internal drive earlier this year and never had problems with that one.
Drives shouldn't just wear out from use, at least not in a reasonable number of years. They are designed for that. Drives however do fail. However, that drive is more likely to be badly corrupted than it is to be mechanically failing. When you are finished grabbing the data off it, use Disk Utility to zero it out. If it can successfully be zeroed out then it is most likely fine to continue to use.

Time Capsule internal hard drive not visible

I have one of the older 500GB TC. It worked fine for a year then I decided to wipe the hard drive to erase the contents. I stopped the process in the middle of clearing the hard drive because it was going on about 8 hours. Every since then the TC works fine as a wireless router, but the internal hard drive is not visible. It won't do any back ups and it's not visible in the Airport program.
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See Pondini's TM FAQs.
iMac refurb (27-inch Mid 2011), OS X Mavericks (10.9.4), SL & ML, G4 450 MP w/Leopard, 9.2.2

2 different brand USB external hard drives not mounting- Firewire ok

Hi, first timer here so apologies in advance.
i have to different brand external hard disks and they both show up fine with a firewire connection. the trouble is that i need to use the usb connection and neither show up. (shows up in system profiler though but not disk utility.) why USB if i can use Firewire? I will be using the disk to connect to a Wii console via usb port and the Wii is not recognizing either disk either?
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cables are fine as work with USB only hard disks.
Thanks in advance

Hello Bob,
Thanks for your reply.
Unfortunately it does not show up at all in "disk utility". But appears in System Profiler under USB. This is true of 2 different external hard drives that mount fine with the firewire cables. One is a 3.5 inch and the other is a 2.5 inch portable. The USB cable is not faulty as tested it with another USB peripheral. Now a big believer in coincidences. Am i doing something wrong?
any other thoughts?
thanks again

Hard Drive Not Mounting After Being Magically Changed to Read Only

I was using a firewire connected, verbatim 1tb drive as a time machine. Everything had been working fine, but I walked away from my laptop for the morning and came back this afternoon to find my hard drive changed to read only. Time machine wouldn't back up to the hard drive; so, I rebooted.
Since then, I haven't been able to get the hard drive to mount. It won't show up in Drive Utility or on the desktop. I have rebooted the hard drive, unplugged it, turned it on and off.
What should I do? How do I fix this? It has my backups and my music. I'm no amused.

I've had exactly the same trouble this morning.
I'm using a MacBook Pro with my Time Machine on a portable Hard Drive. When doing my regular back up the computer froze. I force restarted the computer and the TM drive came up as 'Read Only'.
So, I rebooted again and the drive is not mounting at all. I can see it connected through System Profiler, however the drive isn't showing up in Disk Utility.
Does anyone have any ideas? Coz I don't seem to be the only one with this issue.

Pavilion g6 internal hard drive not working , Can I use WD internal hard drive ?

I have pavilion g6 series laptop . I don't know RPM .
HP internal hard drive is looking very costly.
Can you tell me whether I can use WD internal hard drive or not . If yes then How much RPM hard drive I need to buy?

Hi,
We won't concern about RPM, faster (more rpm) is better. The HDD's are much, much, much, much cheaper now. They were more expensive during a flood in Thailand few yours back. Yes, you can use WD HDD for your computer. You can pick one from the following list:
http://www.newegg.com/Laptop-Hard-Drives/SubCategory/ID-380
My suggestion:
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136835
or this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16822178340
Regards.
BH
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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.

External Hard Drives not Mounting after Yosemite Upgrade

I've just upgraded to Yosemite, and none of my external (USB) hard drives are mounting (they don't even appear in Disk Utility).
Any ideas?

MacBook Pro 2009. 250 SD, HD 8Gb Ram.
I have had this issue for about a year...with no resolve!
Apple and the User community have not been able to solve issue.
I have had to work around it since the Oct 2013 Mavericks upgrade which “killed” (rendered unmountable) both my USB and Optical drives.
Hundreds of replies and remedies have not corrected my issue. Hundreds of replies stating that if there was a global issue it would of been fixed by Apple, not true. And dismissive replies stating that there must be a hardware issue are very discouraging.
So now, hoping to help the voiceless masses, I'm forced to share my experience.
As I stated, I have been having the issue since one of the Mavericks upgrades. The upgrade rendered externally attached drives unmountable...They are all seen in Disk Utility. They are just not mountable. Regardless of the flavor of the disk format, either Mac or PC, they are found, seen and refuse to mount. I can see them using Terminal commands, I can see them in System Report. I can reset all the memory I want...turn it off, reset, sleep, turn on, restart...NOPE...And the optical drive takes in disks but ejects them after an attempted mounting. Keep in mind, there are no physical issues with either USB or optical drives.
So now...I have had enough and need to correct the issue or buy a new equipment - starting to get into software development and need working equipment!!!
For the past month, I have been visiting the Apple store to assist in my issues...Back Story: I'm an IT Field Tech for the largest department store in the country and I have the good fortune of dropping in the Apple store anytime I want...The Geniuses booted the MB with a bootable image of Mavericks, and the USB and Optical drives WORKED fine...So, after I had stumped the Geniuses with my problems, we agreed that we would attempt to format and re-image the MacBook...Fine, do it, it's backed-up, how you ask? - Via my wireless My Book Live 3T drive, which only took 24 hours to backup, AKA Time Machine!
Great news! The re-image of Mavericks proved to work! I WAS able to mount external drives attached! How is that possible? Don't know, don't care! It just worked! So happy!
But wait! I then took the laptop home. Connected to my WiFi, to update Mavericks to the latest version...Good so far! Then it came time for a Time Machine restore, AKA Migration Assistance restore...So, I proceeded to migrate data back to my MB via wireless drive, good so far, booted in Migration Assistant, and I chose to restore everything except the network files, thinking that may be an issue...22 Hours later, the MB migrated without issue...all apps and personal files had migrated! YAY!
BUT NOW THE USB AND OPTICAL DRIVES FAILED TO MOUNT!!!
Great now what? I know, I will just re-image and start again...WAIT, I don't have a Mavericks Install Disk, no problem, I will just create a bootable USB drive with the Mavericks Install Image I downloaded onto my MB this month...NO YOU CANNOT, because you have no use of the USB drives!...And, Apple stopped making OS CDs back in 2009...Oh, and that wouldn't of done me any good, because the optical dive was unusable, anyway!
SO, back to the Apple store with my head hanging! At this point, Yosemite came out the previous Thursday, so no more Mavericks images, great! Perhaps the new OS will alleviate my nightmare!!!!...So, they re-imaged my Mac with Mavericks, drives worked again! SO, I took my MB home and attempted to download the new OS, Yosemite...which only took 2 days due to the amount of traffic on Apple's servers!...Anyway, Yosemite finally installed without out issue! Drives still worked! And so, I shutdown and restarted the system...No issues, USB and optical drives worked beautifully! Yay, Yosemite!...Fixed all my troubles!!!...Not so fast...
And so, I, again, attempted to do a Time Machine restore, via WiFi, this time it took 24 hours to restore...AND it worked! All apps and personal files transferred without issue, So happy! Put the laptop in Sleep and left it home and went to work! Came back from work, tested the system without issues. Rebooted...USB and Optical drive are NOT MOUNTABLE!
So now, what is the file that the restore keeps pushing to my MB that kills the USB and optical drives?
I would just stop restoring from a Time Machine backup, but the only way to get into the TM image is to use Migration Assistant. I cannot view the date in time of the image in TM's Star Wars time line. So, I'm forced to back up everything from the image in Migration Assistance. Not sure that it being an encrypted image has anything to do with it...
...Regardless, what is being “restored” to the MB that continues to configure the OS in such a way that makes all external drives unmountable...keep in mind, my external keyboard, hub and mouse are usable via USB.

External hard drive not mounting

external hard drive not mounting

I fixed mine by uninstalling the software that came with the harddrive such as Tuxera and reinstalled it now myharddrive works again and i did not have to delete the harddrive and reformat it.
I tried a lot like reseting the Pram And connecting other harddrives but by unstalling the original software it works all over again. I hope this works for you because i was getting pretty frustrated myself.
Im running a 2012 macbook pro with 10.9.3
boom mind blown

New internal hard drive not recognized at all!

Hello everybody!
I really need your help. I tried to upgrade my internal 120gb drive to a Western Digital wd2500bevs. But when I start my Macbook with the Leopard DVD neither the System Profiler nor the Disk Utilities Program recognize the drive for a possible installation. When I reinstall the old drive everything is back to normal and works perfectly.
This is what I already tried to fix the problem:
I took the drive into an external casing => it was recognized immediately
I then formatted it => no change after installing it into the Macbook again.
I cloned my system with CCC on the WD and then installed it => no system found.
I have another disk of this kind but the same problem and another 160gb Toshiba disk which is not recognized as well.
Please help me! I couldn't find help in German discussions yet so I hope anyone of you guys can help me.

You say the drive is "recognized" but your original post stated it was not present in Disk Utility. I'm puzzled. Have you attempted to partition and format the drive?
Extended Hard Drive Preparation
1. Boot from your OS X Installer Disk. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Installer menu (Utilities menu for Tiger.)
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the number of partitions from the dropdown menu (use 1 partition unless you wish to make more.) Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the volume(s) mount on the Desktop.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process will take 30 minutes to an hour or more depending upon the drive size.

Hard drives not mounting properly

Lately my MacBook Pro Core Duo 2.4 GHz, OS X 10.5.8 is having trouble mounting hard drives. If I start from my external drive the internal drive may not mount on the desktop or mounting may take a minute or two. Disk Utility will see it but the Mount option is grayed out and I shouldn't have to use that anyway. Similarly, if I start off the iternal drive the external drive may not mount, or mounting may be delayed by a minute or two.
Also, drives appear inconsistently in Startup Disk Prefs or the Finder Window Sidebar. They may not show at all or be delayed in showing up.
First Aid reports no problems with the drives, I have a fresh install of 10.5.8 on my internal drive, permissions have been repaired, directory rebuilt with Disk Warrior 4.1 and the drive optimized with Tech Tool Pro 6.
This and the fact that Boot Camp will not launch are making things difficult for me.
Any suggestions? Thanks.

I have that when using an iMac at work - my external is an old FW400 Formac drive.
Tracked it down to when VMWare Fusion is running - it seems to arbitrarily 'seize' new devices, and then doesn't know what to make of them because they're HFS.
If I connect it either pre-startup, or before VMWare starts there's no problem.
Do you have something running which is grabbing/affecting your Firewire bus - check the logs in Console.

Internal Hard Drive Not Mounting

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