What is mounting in Disk Utility?

Macintosh HD
          Yosemite
          EFI
          Macintosh HD
          Boot OS X
          EFI
          Macintosh HD
          Recovery HD
BackMeUp
          BackMeUp
          EFI
          BackMeUp
           Boot OS X
My main HD is called Yosemite.
My backup is called BackMeUp.
In Disk Utility for Yosemite 10.10.2, what do the 4 to 7 items mean?
Is there a link to a web page that explains what Disk Utility is seeing?
I am asking because I am never sure what item to highlight before repairing.
I assume I select “Yosemite", but why not “Macintosh HD”?

You are seeing the EFI drives because you turned this option on in the Debug menu. To turn off the Debug menu:
Launch Terminal, located at /Applications/Utilities.
Enter the following command at the Terminal prompt:
defaults write com.apple.DiskUtility DUDebugMenuEnabled 0
Press enter or return.
Close Terminal.
This shows my drive with Show all partitions unchecked. ( would see Macintosh HD with Yosemite below.)
This shows my fusion drive with show all partitions selected.

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Internal hard drive does not mount in disk utility

My internal hard drive no longer mounts in Disk Utility. It is grayed out. I have extraordinarily frequent spinning beach ball/freezes, in Safari or Apple Mail. The most recent symptom: upon rebooting or just starting up, I see flashing black on the display. This has been occuring for more than six months. Of course, I have made total and frequent backup's. I bought new RAM, but have not yet installed it, and I susect this might help. I have done repeted troubleshooting many times each: Apple's Disk Doctor, Repaired Permissions, Reinstalled the Mac OS, safe boot, Alsoft's Disk Warrior, Apple's longer Harware Test, etc. I have worked as a new user, too. All tests done report that all is well. What od you thnk the problem is? Must I drive 1.5 hrs. each way to the Genius Bar at my nearest Apple Store? Might I try to erase the hard drive as a fix? I hate to do this, only as a last resort, as it is so time-consuming. Should I just update my Mac OS? Please advise, out there, if anyone can offer any advice, I would be greatly appreciative.

The list of issues you posted probably would not get shorter if you attempt to 'upgrade them' away, as usually that kind of effort is not effective yet may expose more of the same problems while not necessarily revealing the original weakness. Another OS X installed over a set of problems seldom helps.
How full is the hard disk drive? If it is too full, or has been very busy in use several years, it may be time to replace the HDD and perhaps put a larger capacity one in the computer. And if the main computer hardware checks out OK (tested under a variety of duration and stress tests) then also consider a RAM upgrade if the device is not already at the maximum capacity.
When was the last time the hard disk drive was devoid of content, maybe wiped -- erased and reformatted by a third party disk utility or have a utility overwrite the entire HDD with zeros? This used to be a common tech service in the course of a major effort to restore a Mac. Or Defragment?
If you can do the latter, this could help resolve bad sectors and remove old data or corruption on the hard drive. Or get a new HDD and before committing a new OS X install & apps to it (or a re-clone of a complete backup) test the drive and be sure it is ready for use. Not all new drives are perfectly ready; some need to get exercise first.
I'd bet on a new hard disk drive of larger capacity (also note spin RPM rate and data speeds) and a full RAM upgrade.
If you have a backup clone on an external hard disk drive (in a boot-capable enclosure) you could really go to town and before you erase the main/only hard drive, make a backup clone and test its ability to boot the Mac. Or put the old drive and content in a suitable boot capable enclosure of the kind with its own power supply, and deal with it later.
Then consider a later version OS X -- whatever most recent version that model can support... {edited}
Good luck & happy computing!

Internal hard drive fails to mount in Disk Utility.

My internal hard drive fails to mount in Disk Utility for the past year, so I cannot verify it. However, it does mount in Disk Warrior. (1) I am concerned that it will not mount within the Apple software, and what that bodes for my computer. (2) I also have MANY spinning beach balls daily and have to use the power button to reboot. I just bought extra Crucial RAM and have yet to install it. Somehow, I don't think it wil help my issue # 1 though. Please advise, anyone out there! Thank you.

No, there are never any errors like that. Also, I have upgraded the Mac OS from 10.5 to 10.6.8. That did nothing. I backed up my Users = Christina folders to a good, 15 year old Firewire 800 La Cie 1 TB external hard drive. I also tested using the Apple Hardware test, which showed no problems, and Alsoft's Disk Warrior and defragged, and fixed a very minor issure re directory count, probably resulting from many improper shutdowns lately due to frozen spinning beach balls. None of these procedures alleviated the issues, and I still have the same issues: mainly that super-frequent spinning beach ball. Do you think I ought to install that new RAM sitting here finally? Perhaps it is a lack of RAM??I only have 2 lousy GB's of RAM after all! Thank you so very much for a reply.
Message was edited by: Flamingcreatures

"/" symbol where my disk should be mounted in disk utility.

I have a "/" symbol where my disk should be mounted in disk utility. I was just wondering if this is normal. I feel like it used to be a bunch of numbers and letters (probably saying where my disk was mounted). I have been having a bunch of hardware and CPU issues and maybe this could be why?

diskutil list:
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *500.1 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:                  Apple_HFS Macintosh HD            499.2 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     Apple_partition_scheme                        *16.1 MB    disk1
   1:        Apple_partition_map                         32.3 KB    disk1s1
   2:                  Apple_HFS Flash Player            16.1 MB    disk1s2
Diskutil cs
No CoreStorage logical volume groups found
Mount:
/dev/disk0s2 on / (hfs, local, journaled)
devfs on /dev (devfs, local, nobrowse)
map -hosts on /net (autofs, nosuid, automounted, nobrowse)
map auto_home on /home (autofs, automounted, nobrowse)

Missing menu "File|NFS Mounts" in Disk utility

I had many NFS mounts using Disk utility and I used "File|NFS Mounts" but now that option is missing and I can't see my mounts neither those mounts are working, so I have two questions
1. Where I can see my old mounts listed?
2. How can I make nfs mount work?

The problem is Boot Camp: It uses a hybrid GPT/MBR partitioning scheme - which ends up hiding the Recovery HD partition - which is an EFI physical partition (neither GPT nor MBR).
I would expect a new version of Boot Camp to release - like real soon - because of the Recovery HD partition invisibility issue.
In this article - it is suggested that rEFIt should be used to partition a hard drive that is going to support multiple boots including Mac OS X, LINUX, and Windows.
(http://wiki.onmac.net/index.php/Triple_Boot_via_BootCamp)
The key in the article to using Boot Camp with rEFIt is this:
"Run the Boot Camp Assistant and create the Windows XP driver cd. Then exit Boot Camp. DO NOT PARTITION USING BOOT CAMP: you are only using Boot Camp for the drivers, not the partitioning."
All partitioning is done in terminal mode using the "diskutil" command.
rEFIt is used to update both the GPT and MBR records so that all partitions will be visible using its "gptsync" command.
Then - you replace the standard Mac boot menu with the rEFIt boot menu. THAT will show the Mac OS X partition, Recovery HD (an EFI partition), and the Windows partition.
My caveat is that rEFIt - which is open sourced and available here: http://refit.sourceforge.net
has not been recently updated and tested with respect to Mac OS X Lion.
Hope this helps!

My external drive won't mount. Disk Utility says it can't repair disk and to backup the disk and reformat, but how can I do that if it won't mount?

My external drive won't mount. Disk Utility says it can't repair disk and to backup the disk and reformat, but how can I do that if it won't mount?

See mount section in 1st linked article.
Disk Unmount Using Terminal
Disk Utility – Force Mount Disk

Disk Images will not mount and Disk Utility will not runru

I am having some major problems with Disk Utility, Disk Images, and software update. First, Disk utility will not open or run. When I double-click the application icon, nothing happens, no message, nothing. I am running OSX 10.4.11. I have deleted diskutility prefs. I am able to run Disk Utility from the Startup DVD of Tiger. On first run, it verified and repaired permissions. I run verify and repair permissions several more times from Startup DVD and everything is fine. But Disk Utility on my startup HD will not work. Similary, NONE of my disk images will mount. No matter what Disk Image i try to mount, nothing will. And I cannot use Disk utility to mount them! So, no matter what I download, no images will mount. And thirdly, when I try to run software update, it will not work. I do get a message: it says, "Could not load Software Update." Finally, i tried to download Onyx to delete log files, etc.. but again, the disk image will not mount. I was able to install a dashboard widget called "maintidget" and was successful in running the daily, weekly, and monthly maintenance tasks. Can anyone help? Everything else works fine!!! All apps! Safari, Mail, iTunes, MS Office, everything works fine. Thanks for ANY help!

Previously, I had run verify permissions, repair permissions multiple times(from startup DVD) - no probems found. Deleted disk utility prefs. Run the maintenance taskes (daily, weekly, monthly). Nothing worked. But, I forget to check the drive for problems. So I ran disk scan. It found "invalid node" and repair disk could not do it. So, do I erase and do a fresh install or get DiskWarrior? I am running Leopard so I do not have Time Machine but I have backed up my documents, iTunes Library, iPhoto Library, etc... Another thing I found out the hardway is to sync all your bookmarks, mail settings and messages, etc... with .mac if you have an account. Any more suggetions?

Disk image mounting and disk utility oddities on Xserve running OS X Server

I continue to run into an odd problem on one of my server setups. It is a 1.33 GHZ Xserve running OS X Server 10.4.11. There are four ATA drive installed (two of which are mirrored using Softraid 3.6.6). There are a total of 6 Firewire drives on the Firewire 800 Bus. Three of those are used for sharing out files and the other three are for various backups.
What happens is that I sometimes run into an issue where dmg files will not mount. There are no error messages and nothing in the log, they just don't open. Likewise I am unable to launch Disk Utility, it just spins and spins never displaying the drives, again nothing in the logs, no crashreporter. I have also found out that the same thing happens in System Profiler when I try to get a list of drives on either the ATA bus or the Firewire bus. Mind you they all show up on the desktop. Likewise I have had no luck getting them to list or run permissions or the like from the diskutil commandline. Now I am able to mount actual drives. When I swap out the offsite backup drive it mounts the new drive just fine. However... when I eject the drive and it has disappeared from the desktop and then I remove it... I get the removal error.. you didn't put the drive away properly message.
Now there are no disk related events showing up anywhere in the logs. The only other oddity that I can see is that my rsync backups tend to generate a ton of zombie processes. I get zombies of cron, sh, rsync, and mail.
It is just a pretty straightforward shell script
/usr/local/bin/rsync -E --archive -eahfs --delete /Volumes/Files/Shared\ Items/ /Volumes/Backup\ Files/Shared\ Items/
Running in cron with it set to email the logs.
Now this does all clear up when I reboot the server... but it also doesn't reboot cleanly. It closes down all of the applications, login window and the like and then hangs on the shut down portion. Eventually I have to power it off manually. I've done the normal Volume checking on the main drives and they come up with 0 errors.
Hoping someone might have some ideas before I end up having to backup and reinstall the whole thing.

Also when I try to open the disk image file I get the following error in the log.
xserve kernel[0]: disk10s10: media is not present.

Problem updating with gnome-mount & gnome-disk-utility?

I've been getting this when I try to "pacman -Syu" for the last week or so:
Replace gnome-mount with extra/gnome-disk-utility? [Y/n]
When I say yes I get:
error: failed to prepare transaction (could not satisfy dependencies)
:: nvidia-rt: requires nvidia-utils=185.18.36
Any ideas what I can do to make this go away?

loafer wrote:Which version of nvidia-rt do you have? Try upgrading to the latest one in the AUR as that depends on nvidia-utils=190.42.
Thanks loafer. I removed the nvidia-rt (I think I got it from archaudio) and installed the nvidia-beta-all package and everything upgraded just fine.

HT1782 External HD won't mount, suggests disk utility to repair, but I can't back it up.

Hello,
I'm having some problems with my Western Digital My Passport 1TB. When I plug it in I receive an error that says "the disk you inserted was not readable". I've read some suggestions that say to you Repair on Disk Utility, but others that say to back it up first. Unfortunately the disk won't mount so I can't back it up. Am I best to unplug it and try it on a new machine? Or verify? Or repair?
I'm sure this goes without saying, but the contents are extremely valuable to me. What is the safest method to retrieve it?
Thanks very much for your help.

I would try shutting down, unplug the WD external drive, restart and after getting to my Desktop, plug the WD drive in and see if it's mounted and readable.

External HFS encrypted password change & Drive mounting in Disk Utility without password

I have two questions:
1. I have an external HFS encyrpted drive that was encrypted via Mavericks Disk Utility. I have the password for it in 1password but I cannot cut and paste it when it attempts to mount. It is a very long password and it would not be practical to type it manually. It seems that Apple does not permit pasting such passwords (I have also tried to copy the password to a sticky note and then into the drive mount password prompt with no results, thus it is not unique to 1Password). At any rate, to remedy this situation, I would like to change the password to something smaller and memorizable (which is very very unfortunate as I find this a gaping security issue for who, in their right mind will manualy type in a 60 character password every time?). I have not been able to locate a method to change this external drive's password. Any assistance would be greatly apprecaiated.
2. Alarmingly, I AM able to mount the drive WITHOUT entry of the password if I do a verify disk and repair disk. This is horrifying. This means that without any password someone can mount the drive just by running these utilities.
Thanks in advance.

You wrote: "It's definitely formatted for windows...I have Disk Warrior, but it doesn't see my drive "DiskWarrior only works on disks in Mac OS formats, e.g. "Mac OS Extended" (aka HFS Plus or HFS+), "Mac OS Extended (Journaled)." It won't fix disks in MS-DOS/FAT32 format.
There are PC-specific disk utilities, akin to DiskWarrior for Mac, so if you have a PC as well, a PC disk utility might help repair the directory corruption if run from a PC.
External drives, whether they're formatted for PCs or Macs, can be subject to the same causes of directory corruption discussed in See my "Data corruption and loss: causes and avoidance" FAQ. Some of those causes have nothing to do with hardware failure and many are preventable.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X
Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
I may receive some form of compensation, financial or otherwise, from my recommendation or link.

Encrypted drive will not accept password when re-mounting via Disk Utility

I have used the 'whole disk encryption' on one of my external HDDs. Sometimes i eject the drive when i don't need it because it's in a 4bay housing along with 3 other drives. I do this because OSX wakes up all my drives even for mundane tasks like safari browsing or even looking for a dictionary definition. But anyway, my problem is if i want to re-mount that encrypted drive from disk utility (left mouse click on greyed out drive and re-mount) it does not accept my password. I get the little shake like i typed it in incorrectly. Anyway, i tried it like a dozen times and received a dozen shakes of negativity.
If i swith off the drive unit and swith back on again the password is accepted just fine..
Can anyone else test this so i can mark it up as a Lion bug? Or is there something else i need to try?
Thanks
Si

Hi MacNewb1022,
Welcome to Apple Support Communities.
The article linked below has some great troubleshooting tips that should help you resolve the slot-loading SuperDrive issue that you described.
Apple Computers: Troubleshooting the slot-loading SuperDrive
http://support.apple.com/kb/HT2801
Cheers!
-Jason

Boot Camp partition won't mount in Disk Utility all of a sudden

I used to have a Windows 7 Boot Camp partition set-up and working perfectly.
Turned on my 2009 Mac Mini today and couldn't see it in the Finder. Opened Disk Utility, it was there, but grayed out. Right clicked and selected "Mount BOOTCAMP", got "mount failed"
Tried verifying and repairing disk, but no joy. So I removed the boot camp partition using Boot Camp Assistant and started again. Went fine, installed Windows 7 fine.
Booted back into Snow Leopard so I could unpair my bluetooth keyboard (I've found that I can only set-up the bluetooth keyboard in Windows 7 if I unpair it in OSX first). Again, Boot Camp partition doesn't show in the finder, and is grayed out in Disk Utility.
I googled this problem, and found a few people mentioning that NTFS drivers in OSX (e.g. MacFUSE, paragon etc) can cause issues because they conflict with Snow Leopard's own NTFS driver. I did have MacFUSE installed, so I removed it, but it didn't seem to change anything.
Any suggestions?

solution!
install NTFS-3G (http://macntfs-3g.blogspot.com/)
open disk utility and mount your greyed out partition (NTFS-3G will mount it)
unmount it
open system preferences, go to tuxera NTFS pref, second tab (Volumes)
make sure your windows 7 partition is selected from drop down menu then click "disable tuxera NTFS"
at this point i rebooted into windows, then rebooted back into snow leopard. my windows partition was once again mounted and visible in Finder
hope this works for you guys!
Message was edited by: colmiak

Can I restore what was erased in Disk Utility?

I am still learning how to use my Mac, so please bear with me.
I have a Maxtor One Touch III that has ALL pictures of our kids plus any other important document you can think of.
We had a second hard drive that crashed last year and they are sending me a new one, but I've lost that data. So for now this Maxtor has everything on it with no second back up.
The problem was it was not working with my Mac. So I opened up the Installation CD instructions and it said to go do something in Disk Utility. I know nothing about this so I just followed the directions.
It told me to go to Disk Utility, select the hard drive and click erase. And 2 seconds later it appears my entire hard drive has been erased.
Please someone help me and tell me that all my data is not actually lost
Thank You from a Mac newbie...

If you haven't used the drive and are willing to spend some money on recovery software, you may be able to recover the files. See:
General File Recovery
If you stop using the drive it's possible to recover deleted files that have not been overwritten by using recovery software such as Data Rescue II, File Salvage or TechTool Pro. Each of the preceding come on bootable CDs to enable usage without risk of writing more data to the hard drive.
The longer the hard drive remains in use and data are written to it, the greater the risk your deleted files will be overwritten.
Also visit The XLab FAQs and read the FAQ on Data Recovery.
When you perform a quick erase as you did then all that is actually erased is the volume's directory. The files are still intact on the disk's media. Recovery software can locate them and restore them to another drive. However, if you use the drive after erasing it, then new files will overwrite the space occupied by the old files making the old files unrecoverable.
In the future you should ask before doing something you don't understand. Or have lots of redundant backups.

Why won't my external hard drive mount in Disk Utility even when it shows up on the list?

Hey all,
For the last few years I've used a Samsung S2 1TB external harddrive to back up all my files, this includes photos, music and a vast amount of resources required for Uni. However I plugged it in for the first time in about two months and discovered that neither my Macbook Pro (late 2011) or my Mac Mini (early 2013) are able to mount the hard drive.
It shows up in Disk Utilty however the harddrive is greyed out and when I manually try to mount it I get an error message saying that it can't be mounted and to use the first aid 'Repair disk permissions' feature which would be all good and well were that not also greyed out.
I've read a fair amount on this forum that suggest that Mavericks has caused quite an issue with harddrives and although I don't know for sure, the harddrive did stop working at a very similar time to when I updated. I've sinced used the basic version of 'Disk Drill' on the harddrive and all the files show up perfectly which leads me to believe that perhaps the issue isn't with the harddrive itself but perhaps a compatibility issue.
I was just wondering whether anyone had any advice or had suffered a similiar issue, preferably in relation to the Samsung S2 harddrive. The partition type is a Windows_FAT_32 and it's a USB hard drive.
Thanks in advance!

Because there's a problem with the disk's directory structure; these are often the result of improperly unplugging drives or forcing a computer to shut down. Proceed as instructed, or try using a more powerful utility such as DiskWarrior to repair it.
(111975)

What is mounting in Disk Utility?

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