TechTool Deluxe (applecare CD) unmounted my hard drive

I'll just detail what happened, any and all suggestions would be helpful.
1. Ran Permission repair utility: everything checked out
2. Ran Disk repair utility: Catalog error found
3. Rebooted mac with techtool deluxe cd.
4. Enabled all tests (including volume structure test)
5. All tests check out fine save for volume structure: which is what I expected
6. prompted me to "repair" drive, clicked "ok"
7. After repair successfully completed rebooted mac
8. Kernel Panic upon reboot
9. After multiple reboots, restarted from Tiger install disk.
10. According to Tiger install disk, main hard drive is "unmounted" and un-journaled
11. Re-started again from TechTool Deluxe Cd
12. Ran Tests again (this time only Volume Structure) Passed
TechTool completely recognizes my hard drive, and everything on it (correct amount of space used etc. While OSX says I have nothing on it, and refuses to boot normally without the aid of a CD. What are my options at this point?

Hi Jason, and a Warm Welcome to the Power Mac G5 Forum!
There is some(!) discussion of this problem here
http://discussions.apple.com/thread.jspa?threadID=120264&start=0&tstart=0
And some stable door here
http://docs.info.apple.com/article.html?artnum=301269
You could try (if you haven't already) using the Disk Utility on the 10.4 retail disk to Mount and Repair the boot drive
http://docs.info.apple.com/article.html?path=DiskUtility/10.5/en/duh1018.html
You may be able to use Firewire TDM to access the drive, if you have another Mac
http://docs.info.apple.com/article.html?artnum=58583
and try Disk Utility from there - and maybe rescue your data, if you need to.
I haven't read it all the way through... but the early posts seem to have ended in an Erase and Install of OS X; Disk Warrior did not appear to help - but is a useful Utility to have, so may be worth a try
http://www.alsoft.com/DiskWarrior/index.html
and highly-recommended by many in this Forum.
You can download and burn a current TechTool CD here
https://support.apple.com/techtooldeluxe/main?id=dl
- if you have AppleCare, of course.
Good Luck.

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Manual unmount Firewire hard drives before shutdown

I'm having shutdown problems again possibly due to my new firewire hard drive, the firewire driver supplied by OS X, or some combination thereof.
The issue is if I don't manually unmount my Firewire hard drive, the MacBook Pro does not ever properly shutdown and just spends its time doing the "spinning sun ray". If I manually unmount the firewire hard drives (by dragging to trash, for example) then there is no shutdown problem. Why should this be a problem at all? I don't understand. Why can't the shutdown command also unmount Firewire hard drives consistently?
My set up:
MacBook Pro <--> LaCie 120Gb firewire <--> Maxtor OneTouch 4 Plus 500GB
I also saw this article:
http://www.fcpworld.com/fcpworld/articles/E14514A0-F957-48E4-835A-81CE505C03D5.h tml
Any times on how to solve this problem so that I can go to the shutdown command without first having to manually unmount the Firewire hard drives? Thanks!

Frank Canzolino wrote:
Thanks for reporting back, the idea was just a theory that I had never tried before. I do know that Macs will have difficulty shutting down if the state of a network is changed during to shutdown, say pulling the ethernet cable. Firewire has been implemented as a network port (actually a while ago).
Yeah, I've known Firewire was implemented as a network port a long time ago. The strange thing is that I'm not using the Firewire port as a network device AND it has also been deactivated. It was deleting the port that seemed to have helped it.

Applecare and user's hard drive data

All hypothetical (but this just happened to a HP Pavilion of my clients)
If my MacBook was dead and would not power on, could I REMOVE the hard drive and would Apple still service the MacBook under my 3 year Applecare plane?
If my MacBook was dead and would not power on, could I swap the hard drive with the SAME make and model hard drive and would Apple still service the MacBook under my 3 year Applecare plane?
If my MacBook was dead and would not power on, could I swap the hard drive with a DIFFERENT make and model hard drive and would Apple still service the MacBook under my 3 year Applecare plane?

eq2675 wrote:
All hypothetical (but this just happened to a HP Pavilion of my clients)
If my MacBook was dead and would not power on, could I REMOVE the hard drive and would Apple still service the MacBook under my 3 year Applecare plane?
I think in general Apple wouldn't likely service a machine without a hard drive. It's probably a case where all the parts for a working system need to be there in order to diagnose what the problem is. It would be beyond Apple's responsibility to temporarily install their own hard drive and remove it later.
If my MacBook was dead and would not power on, could I swap the hard drive with the SAME make and model hard drive and would Apple still service the MacBook under my 3 year Applecare plane?
I think that would be reasonable. In any case one should be able to install a hard drive (considered a DIY service) and receive warranty service if something else goes wrong. Most people replacing hard drives would save the old one and put it back in case service is needed. Read more.
If my MacBook was dead and would not power on, could I swap the hard drive with a DIFFERENT make and model hard drive and would Apple still service the MacBook under my 3 year Applecare plane?
Should be no problem. However - I know some people have tried this and Apple has decided (at their discretion) to replace the entire machine, or have ended up replacing the hard drive for whatever reason. Again - most people save the original drive if service is ever needed.

Unmounted, Unreadable Hard Drive

Okay, where to begin.
I'm using Leopard, and vista in a different boot partition, I replaced my Hard Drive with a different one and have had no problems for the past 2 weeks or so. Problem just recently began with my mbp closing on startup, verbose mode showed that it was halting the CPU, and doing fsck showed that there was a sibling link error.
Tryed unmounting and repairing using fsck_hfs -r /dev/disk0s2 (EDIT: Which failed almost 6 times, it told me the hard drive was not fixable), and restarted in windows, now, my macintosh drive won't mount in single user mode (: mount /dev/disk0s2) it simple just goes to a new line like it did remount, but nothing shows up in windows and the startup cannot find any of the files.
So now I have a:
An Unmounted HD
A messed up Catalog on the HD
I'm trying to recover my files before backup, unless anyone can tell me another way to fix this. I can use Vista, which is what i'm posting from. Ironic.
Also, i have checked around on how to fix this inside vista, and apparently, there was no solution other than to simply do a clean install. But i want my data still, any ideas?
Message was edited by: Hellsadvocate

well i dont know what to tell you, you may be able to down load disk warrior on the windows side to make the disk and then run it on the mac but i really dont know
before its all over you may have to get the HD replaced but i really dont know how the boot camp partitioned drives work when it comes to the FSCK command since it may be thinking all of the drive needs to be checked but only the mac partition can be checked
-matt
Message was edited by: mattathayde

Unmounted External Hard Drive, Error: Filesystem verify or repair failed

Earlier today, I disconnected the external hard drive while it was working.
Now, the External Hard Drive won't even show up on my computer. However, on the Disk Utility it does. I have tried to verify & repair the disk. Plus click the mount button nothing work.
Whenever, I ran the system verify or the repair. I got this error: Error: Filesystem verify or repair failed
Ok. So I have searched all over the internet and forums. Tried everything. Nothing works.
I even tried Disk Warrior. It would work for a while, then when it came to step 8. It would make my computer go black and hold down the power button to restart.
Any suggestions? Please let me know, I would like to recover the files if I can. Thanks.
P.S.Yes I have tried to restart multiple time. I have tried with my USB 2.0, firewire 400, & 800 too.. Nothing.Everyone except the USB shows up in the disk utility but doesn't mount.

I have had the exact same situation occur, but was able to follow these steps to successfully save everything!!
The Unix program "dd" will instruct a drive to stream out all of it's data from beginning to end without regard to file structure, therefore creating an exact block-for-block duplicate. By doing this, it will allow you to copy everything off without having to mount the drive. It also ignores any corruption or physically damaged blocks on the drive which would otherwise crash or freeze the Finder. It saves the data to a disk image file which you can then open and use without fear of imminent failure (the format of the disk image will be the same as the original drive). Now that the data is preserved, you can safely go through and recover your files. Keep in mind that if a file was damaged or corrupted on the drive, it will be unusable, but at least you'll be able to get to the good ones safely. In my case, using "dd", I had no problems and got every file off. If it doesn't work for you, at least it's impossible for just trying it to further damage your files. I can recommend a few other remedies if this doesn't work for you.
Note: The computer must be able to at least recognize the drive. That means either 1) It mounts 2) When you connect the drive the Finder asks if you want to erase or ignore, click ignore and you should be able to do this, or 3) Nothing happens in the Finder, but the volume in question does appear in Disk Utility. If you connect the drive and absolutely nothing happens and it never shows up in Disk Utility, it won't work.
Note: As always, it is suggested that you backup important data on your startup disk before proceeding with stuff like this. It is possible to wipe a drive by mistyping a terminal command, so double check before you hit enter.
_Now, on with the show!_
Prep: Restart your machine so that it goes straight to the login window. Enter your user name and password. As soon as you press enter after your password, immediately hold down the shift key until the Finder finishes loading (this prevents any background startup items from running that might interfere).
1. Attach the drive to the computer and make sure you have another drive with enough free space to hold the entire capacity of the bad drive, not just it's used space, but the WHOLE size of the bad drive (for exception, see very bottom of this post).
2. In Terminal, type:
+diskutil list+
Look for the drive you want to recover in the "name" column, then write down it's "identifier" (ex. disk1s2)
3. In Terminal, type:
+dd bs=512 if=/dev/disk#s# of=/my_directory/image.dmg conv=noerror,sync+
!! Replace "disk#s#" with the identifier you wrote down before !!
!! Replace "/my_directory/" with the path to where you want to save !!
!! Replace "image.dmg" with the name you want to give the disk image (must end with .dmg) !!
4. To confirm that something is happening, open Activity Monitor (in the Utilities folder) and click "Disk Activity". Once you determine an average transfer rate, divide the size of the drive by that and then divide by 60 to see how many minutes it will take to finish. *+! ! FOR LARGE DRIVES THIS WILL TAKE A VERY LONG TIME ! !+* To be safe, do not use your computer for anything until the process finishes, you can leave Activity Monitor open so you can see when it's finished.
If you're only really concerned about a certain files and you know their exact path on the bad drive, let me know and I can give you modified instructions to copy just those files, saving the time and space of doing the whole drive.

Unmounting the hard drive

Does anyone know how to dismount the hard drive from the motherboard?
Which screws must I unscrew first?
Thanks-
Cait

This is a bug in Canon camcorders. They will not share the Firewire bus with any other devices.
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Unmounted second hard drive in OS X Tiger

Hello there:
Suddenly the second hard drive in one of my computers, a G4, it's no longer available. This is not the main HD, just a back up drive. Any ideas?
Best wishes, as always,
Federico (aka euskir)

OK, I'll assume you've rebooted already..
As a test, not that we'll actually try to recover anything yet, but there are a few Apps that can adddress a Drive that isn't seen in DU, so try some of these to see what happens.
Data Rescue II...
http://www.prosofteng.com/products/data_rescue.php
This one would require another HD with plenty of space to recover to.
You should use another Boot Disk or other Mac with this one in Target mode to do the recovery.
They have a free demo to see what it could recover.
rccharles on file recovery...
"Stellar Phoenix Macintosh - Mac data recovery software, recovers data from damaged, deleted, or corrupted volumes and even from initialized disks."
They have a trial version, so I guess you can see if your data can be recovered...
http://www.stellarinfo.com/mac-data-recovery.htm
FileSalvage is an extremely powerful Macintosh application for exploring and recovering deleted files from a drive or volume. FileSalvage is designed to restore files that have:
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http://subrosasoft.com/OSXSoftware/index.php?main_page=product_info&products_id= 1

Can't unmount a hard drive

Since I use Leopard, Once I plugin a Firewire harddrive, it is not possible to unmount it unless I reboot the computer.
Tried to repair permissions, tryed to rebuild Directory tried… tried…
Drives (several) mount/unmount normally on my other computers (G4 Panther).
Has anyone seen this?
Thanks for your help.
OSX10.5.2, MacBook Pro 2,5GHz.

Yes, it says the disk is in use. The only way to unmount is to reboot the computer. Problem occurs on several FW drives.
When I try to repair with Disk Utility, it just hangs. Disk Warrior, Drive Genius can't find a problem. But, strangely, Drive Genius doesn't even allow to rebuild/repair the internal drive and DiskWarrior won't allow me to look at it either. If I try to repair it with Disk Utility, it does not work (hangs). If I also try to repair with Disk Utility once booted from the installation CD system, same thing. Doesn't get past a certain point and hangs.
Seems to me all this is related to the internal drive, even though some FW drives can mount/unmount without problem.
All external FW drives have been checked and/or fixed with another computer (G4/OSX10.3.9) and function perfectly with it. Not on Macbook Pro/Leopard.
Any help someone. After reading some posts it seems related to the same "unknown" problem…
Thanks

Unmountable external hard drive

I have a Hitachi 1TB external drive that suddenly is unmountable - disk utility says that it's fine, repair disk says it's fine, but it won't mount - any ideas? The files are extremely important (aren't they always???) and I really need to get it fixed! Would greatly appreciate your ideas/help!

I have this problem too with my Western Digital 1TB My Passport for Mac.
Downloaded Card Data Recovery - did not work. The software self terminated itself when the problematic WD is connected. Starts up fine when the WD is not connected by USB.
Then I downloaded Remo Recovery. Starts up fine, scans fine and appears to save the files but ALL the files 'saved' are unreadable.
Finally, downloaded Stellar Phoenix in a last ditch attempt to recover my precious video files. Starts fine, saves fine BUT it cannot save files above 200MB because the WD stops working every 10 minutes.So, did not solve my problem totally because I have so many files above 200MB.
And yes, I PAID for all the software above. And the first two software are reluctant to refund me my money until their development team can ascertain whether it's a software bug, over online web conference. And because of the time differences, I can never get online with them. So, all my money gone.
Until one day I opened Activity Monitor and noticed this 'fsck_hfs' starting up everytime I connected the problematic WD My Passport for Mac.
So, tried to Force Quit 'fsck_hfs' and VOILA!
A dialogue box popped up and says that the Passport for Mac cannot be repaired and that I can move and copy files from it but not save to it.
PHEW!!
At least I can access the files and save them to my Seagate 1TB although now I am having a problem opening FCP X project files rescued from the WD.

TechTool Deluxe and External Drives

Is it true that TT Deluxe doesn't show external hard drives (FW or USB) in its Volumes dropdown menu? All my external drives are mounted and permissions verified, but TT Deluxe only offers me the possibility of scanning my two internal drives.
Thanks.
Paul S.

Updating to TechTool Pro might help. There is a reduced price from the AppleCare disc
<http://www.micromat.com/index.php?page=shop.productdetails&flypage=shop.flypage&product_id=33&category_id=6&option=comvirtuemart&Itemid=80> but check with Mocromat first to see if it will work with external drives.

Cant unmount hard drive

I have a Maxtor 500 GB quickview HD in an ext hd casing with esata,firewire 400, and USB connections. Was copying my Mac Book Pro hard drive to the external hard drive with carbon copy cloner and it froze on transferring the library. On restart the ext hd still loads on the desktop, but inconsistently. I tried to erase the ext hd in disc utility, and repartition as guid format (the hard drive was extended journaled and i think apple partition map. It is telling me it cant unmount the hard drive to erase. What am I doing wrong? How can I unmount to reformat? Any suggestions most welcome.

I bought 3 external Hard Drive set ups with the maxtor internal hard drives. Two of the 3 work perfectly on all 4 of the mac computers I have access to. The defective one acts the same on all 4 computers, so it is not the computers, and seems to be something with the defective external hard drive. I have even started the computer from my install discs, gone into disc utility and tried to first aid, erase, and partition with the message always "Can't Unmount the hard drive". I would assume that it is not the cables since the ext hard drive shows up on the desktop of all 3 computers, and changing cables doesnt make a difference when using 3 different firewire cables. Any other ideas on what I might try to get the hard drive to unmount? Is the only other option to see if I can return the hard drive? I really appreciate the comments so far, it is quite helpful to know that it is not just me pushing the wrong button somewhere that unmounts so disc utility can do it's job.
Thanks again
Bob Landman

How do I reformat hard drive when I can't erase the disk?

Machine: imac, OS 10.6.8
Initial Problem: Finder kept crashing for all users immediately after start up. As a result I was unable to try trashing finder preferences as recommended in this forum and elsewhere.
Attempted solutions:
1. Initially seemed unable to boot from Snow Leopard Installation Disk
2. Connected to another imac using firewire and booting problem computer into target mode
3. Ran Techtool pro from master machine. Hard drive and hardware fine but reported need to format disk on target machine.
4. Tried to install new os onto target drive using disk drive on master machine. Error message reported being unable to find target drive, even though it was showing on desktop of master machine
5. Tried to erase disk using disk utility on master machine, but error message stating unable to unmount target drive
6. Successfully rebooted using snow leopard installation disk, but unable to instal. Error message stated that the computer was not available. i.e. it had the yellow triangle with exclamation masrk
7. Tried to erase hard drive using disk utility from installation disk, but was unable to do so. The process commenced to unmount the disk, started to erase but stopped before task completed. Tried a second time with same result.
Obviously the machine needs complete reformatting. I made a backup before starting this series of unsuccessful attempts. I suspect that I need to use terminal from the installation disk, but I am not sure which terminal command to use.
Can anyone tell me? Or have I overlooked some simpler solution?

Install or Reinstall Lion/Mountain Lion from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Erase the hard drive:
1. Select Disk Utility from the main menu and click on the Continue button.
2. After DU loads select your startup volume (usually Macintosh HD) from the
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3. Set the format type to Mac OS Extended (Journaled.) Optionally, click on
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4. Quit DU and return to the main menu.
Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Install button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible
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New hard drive won't install in my macbook pro 13"

Hi everyone
I have recently been having problems with my mac book where I was constantly seeing the spinning beachball. I had wiped the hard drive and was still having this problem so took my mac book to a "genius" at my local mac store who told me that the hard drive was faulty. I was out of warranty so he advised me how to change the hard drive and recommended me to install a crucial 240gb M500 SATA 6Gbps 2.5 SSD. I have now fit this into my mac book and have done internet recovery to allow me to get to Disk Utility. My computer recognises the new Hard drive but when I got to erase the disk to enable me to install the operating system it just hangs attempting to unmount the hard drive. I left it over night and nothing happened. IS there something I have done wrong or is there another way of me installing the operating system onto the new hard drive?
Many thanks in advance

Hi Clinton:
off topic: remembering your beautiful 980GB M500, i want to point to two things that I came repeatedly by:
1. the M500 has more "overprovisioning" than most other Crucial ssds ( I thought that you might want to hear that.
2. Lately I hear more and more comments by respectable manufacturers that Trim in Mac OSX should be avoided: the "enabling" softwares are a bit crippled software and there are many timing faults at the file level communications, which are counterproductive.
So I followed the recent comments of a OWC staff member:
"One way to live without TRIM on OSX is just reduce the volume on the drive and leave the unallocated space...unallocated. If you have a 240GB drive I suggest removing 40GB.
The drive will map this into the over provisioning and move the space in and out of use on the volume very quickly...almost faster than TRIM does
Also remember the drives do have garbage collection and will look after themselves if given the chance too".
So I restored the complete original IOAHCIFamily.kext ( by running a Combo Update) on all my SSDs, and with DiskUtility I dragged the bottom of the startup partition up for about 40GB and left it unallocated (no format).
I remember that you did not install Trim (?), but to be sure I send this to you.
Have fun my friend,
Lex

PowerBook G4 can't see external hard drive

All of a sudden, my PowerBook G4 can no longer see my external hard drive (Maxtor 160 GB drive). The drive doesn't appear in the Finder, and it doesn't mount on the desktop. Thus, I have no way of accessing the files on my external hard drive.
I can see the external hard drive when I launch Disk Utility (and also when I launch TechTool Pro), so I know the hard drive and the USB connections are working.
Can someone please help on this?? I've tried unplugging everything and rebooting with no results. Thank you.
PowerBook G4 Titanium 1ghz processor Mac OS X (10.4.2)
PowerBook G4 Titanium 1ghz processor Mac OS X (10.4.2)

Everything looks clean, as far as I can tell.
Disk Utility says:
"The volume External Hard Drive appears to be OK.
Mounting Disk.
1 HFS volume checked.
No repairs were necessary."
TechTool Pro volumes test says:
Volume Structures
Thursday, March 29, 2007 6:24:26 PM US/Pacific
Passed
Volume: External Hard Drive
Mount Point: /dev/disk1s3
Format: HFS+ (Mac OS Extended)
Journaling: Enabled
Case-sensitive: No
Created: 03/26/07 01:26:09 AM
Modified: 03/26/07 01:26:09 AM
Capacity: 152.54 GB
Used: 49.81 GB
Available: 102.74 GB
Files: 86,074
Folders: 16,342
Writable: Yes
Ejectable: No
Removable: No
There are a variety of invisible files, settings, and parameters that the Macintosh file system uses to locate files, free disk space, and for other maintenance and management routines. Damage to these critical data structures can result in lost or damaged files and may even necessitate a complete reformat of the volume.
Precheck Structures
This test checks the readability of the various volume structures.
Boot Blocks
This test validates the Boot Blocks portion of the volume. This block of data is created when the volume is blessed.
Boot Blocks <Passed>
Master Directory Block
This test validates the Master Directory Block portion of the volume. This block of data is created when the volume is created and contains important data about the rest of the volume.
Master Directory Block <Passed>
Volume Header
This test validates the Volume Header portion of the volume. This block of data is created when the volume is created and contains important data about the rest of the volume like number of files and folders, and the amount of free space available on the volume.
Volume Header <Passed>
Allocation File (Bitmap)
This test checks the Allocation file. This file indicates which blocks are allocated for use and which blocks are free.
Allocation File (Bitmap) <Passed>
Extents File (B-Tree)
This test checks the Extents file. This file contains the extent data for the entire volume. Extents are the separate components of a fragmented file.
Extents File (B-Tree) <Passed>
Catalog File (B-Tree)
This test checks the Catalog file. This file keeps track of all the files and folders on the volume.
Catalog File (B-Tree) <Passed>
Attributes File
This test checks the Attributes file. This file tracks all of the attributes of each file and folder on a volume. Some attributes include whether the file is locked or not and the last time the volume was backed up.
Attributes File <Passed>
Startup File
This test checks the Startup file. The parameters within this file contain the information used by the computer ROM to determine what program will boot the computer as well as other system-specific aspects.
Startup File <Not Present>
Completed
Passed
Tech Tool Pro File structure says:
File Structure
Thursday, March 29, 2007 6:30:25 PM US/Pacific
Passed
Volume: External Hard Drive
Mount Point: /dev/disk1s3
Format: HFS+ (Mac OS Extended)
Journaling: Enabled
Case-sensitive: No
Created: 03/26/07 01:26:09 AM
Modified: 03/26/07 01:26:09 AM
Capacity: 152.54 GB
Used: 49.81 GB
Available: 102.74 GB
Files: 86,074
Folders: 16,342
Writable: Yes
Ejectable: No
Removable: No
This test checks for file resource corruption on the volume 'External Hard Drive'. If any damaged files are found, TechTool Pro will let you know which files have corrupted resources.
Analyzing File Structures
Passed
I'll let you know if Tech Tool Pro's surface scan of the drive turns anything up (it's running right now - takes several hours to run), but hopefulyl this provides a good starting point into painting a picture of my system...
Thx - Bob

Spinning down external hard drives

A while back I wrote a little app called sumount, for safely unmounting usb hard drives. While try to make it work a little more reliably, I came across hd-idle. Hd-idle does a fantastic job, much better than my little hacky script.
I've requested my app be deleted from the AUR (it is stupid and redundant), and am posting this to the forum so the four people who use it know to switch :-)

The drive will spin down if Energy Saver tells it do so in Apple menu -> System Preferences -> Energy Saver. I have found though, spinning down an external hard drive sometimes is not desired because Energy Saver may not be able to give back all the power the drive desires when it wakes up. This can lead to an improperly dismounted volume causing occasional directory damage. My suggestion is to simply dismount it, and leave Disk Utility up so you can mount it again. Disk Utility is in Applications -> Utilities folder.

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