Failed to mount partition of MAC OS Extended (HFS+)

Dear all, please help me save me, as well as my External hard disk !!
As a matter of fact, my 1TB External hard disk has three partition: MAC OS, NTFS and FAT32. All of the partitions work very well in the past. However, I just discovered that my MAC OS Extended (HFS+) format "MAC OS" partition could not be mounted, although my another two partitions were seemingly fine. I have tried to repair the partition with the Disk Utility but I failed. I have no ideas that why would this happen to my hard disk since I have not done anything to my hard disk and my MAC OS partition.
Please let me know if there is anyone know how to to solve the problem and recover my MAC OS partition. I just want to get back the data inside my MAC OS partition. Million Thanks!!
(P.S. I have only done two things before I discovered that my MAC OS partition was no longer working.
1) I have updated the Apple Security Update 2015-002 when my hard disk was plugged into my Macbook air.
2) I have tried to move some files from my "NTFS" partition to another external hard disk. But I failed because of unknown reason.)
*This is what I got when I did the "diskutill info" on Terminal.*
[1]: http://i.stack.imgur.com/4Cgam.png
*This is what I got when I tried to repair my partition.*
[2]: http://i.stack.imgur.com/n7mzg.png

It looks like you will need to erase and reformat the partition.
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Two partitions of Mac OS extended and one BootCamp partition

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Hi Ovchar,
you can use the Terminal command 'Diskutil resize' described in this procedure to Triple Boot a Mac: http://wiki.onmac.net/index.php/TripleBoot_viaBootCamp
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Regards
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Unable to format Sandisk Extreme USB 3.0 to Mac OS Extended (HFS+)

I have a Sandisk Extreme USB 3.0 flash drive that is 64GB, it used to work properly when i bought it few months ago (formatted to Mac OS Extended [HFS+] file system). Then there was this one day when all out of a sudden it just stopped working properly, it wouldn't access the data when i plug it into my Macbook Pro, it just says that 'The disk you inserted was not readable by the computer' and the only choices were to initialise (brings up disk utility), ignore or eject. I tried to format it back to HFS+ (Mac OS Extended Journaled) but it always gets stuck halfway during 'partitioning' and the estimated time seems to always get longer and longer (i tried leaving it overnight for it to format but in the morning it was still stuck at the 'partitioning' process, and the estimated time has gone up to 7 hours! I tried formatting it to ExFAT and the formatting completed very quickly (within a minute or so) but the problem with this format is that it wouldn't remount (the computer cannot read it even though i plugged and unplugged it multiple times). I next tried to format it to MS-DOS (FAT 32) and this time it worked fine, it was able to remount itself properly after formatting. I am able to format it to ExFAT using a windows PC but the read and write times was horrible (on both macs and PCs). This was not the case before all of this went wrong. My external hard drive was also faulty (read error) but i managed to format it back to HFS+ without difficulty. Is there anything wrong with my computer or flash drive? Any help would be much appreciated, thank you in advance.

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Formatting NAS hard drive as Mac OS Extended HFS+

I just got a NAS enclosure for my home LAN and two SATA hard drives to fit.
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The drives show up nicely in the finder, and some files copy over without difficulty. HOWEVER, some don't. I'm pretty sure that the problem is that the install utility formatted the hard drives in Windows format, because the files that they will not now accept are ones with Windows-disallowed filenames, such as those with long filenames or Windows-illegal characters.
SO:-
I suspect that my problem would be solved if I could re-format the drives in the NAS enclosure to Mac OS Extended HFS+ format. BUT, the Windows-oriented installation utility provided by the NAS manufacturer (Linksys -- don't believe them when they glibly say their NAS boxes are Mac-compatible!) doesn't offer Mac formatting.
And unfortunately, while the NAS drives show up nicely in my Mac finders (both 10.3.9 and 10.5.5), they don't appear in Disk Utility, which is where I usually go to format hard disks.
SO:
Is there a way to format a NAS disk in Mac format over my home LAN?
As a workaround, i could try temporarily installing the SATA drives internally in my G4 and format them that way, then put them back in the NAS enclosure. But it would be a bit of a kluge, and I'd have to re-transplant them every time I needed to undertake disk maintenance.
Any ideas, anyone? Thanks v. much.

Thank you for your response. I was able to successfully format the drives Extended journaled when they were out of the raid configuration. I was not able to format as Extended (not journaled) in the Raid configuration.

Format External Drive with 2 partitions (NTFS & Mac OS Extended)

I have a 300GB external hard drive. I need to format it into 2 partitions so I can backup my PC and my Powerbook.
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greg:
I think you are more likely to get help if you post your topic in the hardware forum for the 17" G4 PB.
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How can I partition my external hard drive into NTFC and Mac OS Extended Journaled?

I brought a 1tb external hard drive from Western Digital. It currently have one partition which is Mac OS X (Journaled). I want to have two partition, one Mac OS Extended (Journaled) and one NTFC for Windows. When I try to choose 2 partition and choose a partition type, I only get the following choices:
1. Mac OS X Extended (Journaled)
2. Mac OS X Extended (Case-Sensitive, Journaled)
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4. ExFAT
5. Free Space
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Assuming that entire drive is GUID and you keep the existing journaled partition.
Make a second partition that is exFAT (more storage ability than FAT) using DU.
Then mount the drive on a Windows 7 and reformat that exFAT as NTFS. But remember that Mac can read and write exFAT natively, but cannot write NTFS without special software. Perhaps exFAT is what you want.
But more the the point: is the journaled partition used as a backup device? If it is, I would leave that drive alone as a backup drive and use a second device for "data only" sharing between types.

Why i can't find the external HDD plugged to airport extreme. i already format it with mac OS extended (journaled)

Why i can't find the external HDD plugged to airport extreme. i already format it with mac OS extended (journaled).
Does only certain branch of HDD can be connected to aireport extreme?
I collect some information and i knew i have to partiion the HDD into Mac OS extended (journaled),
and i did so. Still the usb HDD cannot be found.
The other question is, can i partition the HDD into two sections, one of it is Mac OS extended(journaled) while the other is Fat32?
I want to share Fat32 section with another PC with windows system.
Thanks a lot if you have any suggestions.

I had tried to set up the connection via usinb a powered usb hub as the bridge between external HDD and the airport extreme. i still cannot found the HDD in the "airport utilities".
This is my setting.
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2. Connect external HDD to MBA. Partition it into single-partition with Mac OS extended (journaled).
3. The HDD can be found if i plugged it directly to my MBA.
4. Connect a powered usb hub to airport extreme.
5. Connect external HDD to the powered usb hub.
6. Open airport utilities.
a. Select "airport extreme" in the sidebar.
b. Change the "Disks" sheet.
7. Cannot find an external Disk
Is there any problem here?
Please help me. Thanks a lot!!

Fix - Journaled partition fails to mount (journal magic error)

Before trying to repair or recover a 'Mac OS Extended (Journaled)' disk or partition that fails to mount in the Finder, check whether it is just the journal file that is corrupted. If the partition appears in Disk Utility, the fix is to turn off Journaling. If the partition can now be mounted and your files are present, the problem is solved and journaling can be reenabled.
To confirm a problem with the journal search for console error messages with "journal magic" that occur when tring to mount the partition.
In Disk Utility select the partition that will not mount, hold the Option key and select 'Disable Journaling' in the File menu drop down. It will take a few seconds to complete. Now mount the partition using the Mount button or the File menu. To turn journaling back on (recreating a clean journal file), select Enable Journaling from the File menu or the green toolbar button. (This can also be done through Terminal with the diskutil command. See https://discussions.apple.com/message/12838806#12838806 and search on "journal magic" for details.)
I spent two days trying to recover my data from an external drive. Neither Disk Utility or Disk Warrior 4.4 was able to repair this problem. DU said the partition could not be repaired and DW failed with an "insufficient memory error (2154)". Of course your problem could be a more sever corruption, or the disk does not appear at all in DU, but this is easy to try first.
Hope this is helpful.

Let me be more specific
W2000 SP4 server, MacBook client, trying to mount shared volume thru SMB
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-from home my wife can mount the shared volume thru Network Neighbours on her XP notebook
-it does not seem to be TCP/IP related - all comp can make FTP or VNC to the server verywhere
-err log of mount_smbfs is "negotiate phase failed: syserr Operation timed out in the console", no idea is there a way to verbose mount_smbfs
-smb.conf looks basic...secure passwords=enable, no nsmb.conf
-W2000 SP4 sever is all default secure policies, running FTP server w/o any issues.
So is there a key on server...or the client which I have to tweak?
Thank you.
MB 2.0 Mac OS X (10.4.9)
MB 2.0 Mac OS X (10.4.9)

Mounting external HD with Mac OS extended jornaled

I bought and installed a new HD on my macbook pro running Mountain Lion OS. Now I'm trying to copy the data from my old HD wich also have Mountain Lion installed but I can't mount my old HD throught USB as an external HD. The format is not been recognized.
More information:
The old HD has data, so I can't erase it.
Both HD is formatted using Mac OS extended (jornaled).
Although I can't mount the HD, the disk utility shows it, but umounted.
When I try to mount, nothing happens.
If I connect the old HD throught the ribbon cable I can start normally the OS and manipulate my files, but then the same thing happens with the new HD. I'm not able to see it when connected through USB.
I think the HD brand and model are not relevante to this case, because both HD used in this proccess are having the same behavior when connected through USb.
Based on the statements above, I can assure that is not a hardware problem.
This problem appers to be simple to resolve, but I've searched and found nothing that could help me. Anyone have some idea?

Unfortunately, 99.9% of drives sold are focused for Windoze and come in NTFS/MBR format/partition. Which OS X completely detests, especially in write mode and for booting from.
Enjoy your new drive.

Boot Camp error: The startup disk cannot be partitioned or restored to a single partition. The startup disk must be formatted as a single Mac OS Extended (Jounraled) volume or already partitioned by Boot Camp Assistant for installing Windows.

Hi!
I am getting the error:
"The startup disk cannot be partitioned or restored to a single partition. The startup disk must be formatted as a single Mac OS Extended (Jounraled) volume or already partitioned by Boot Camp Assistant for installing Windows."
I read up some on google, but all of them says that they have crated a partition and that is the problem, I only have the standard "Macintosh HD".
I tried to create a partition manually in disk utility but then the error message: "Partition failed with error message: Could not unmount disk."
Can anyone help me? It's driving me crazy.
Thanks.

This message, and threads like yours got asked daily for over two years, now it is only a couple times a week!!
Is it so hard to follow through? you were to have backup already, clones are best, then erase/format and restore.
Then partition.
Some have been able to use Disk Utility booted from OS X DVD or another drive, and repair the drive.
You have to use Boot Camp Assistant (99.9% anyway) to create and achieve a proper Windows Master Boot Record partition.

Boot Camp won't partition my disc because it says I need to reformat as a single mac os extended (journaled) even though it already is.

I'm trying to partition my Macbook Pro early 2011 with Boot Camp Assistant so I can run Windows 7, however when I tell it to create the partition I get an error that says:
"The disk cannot be partitioned because some files cannot be moved. ... Back up the disk and use Disk Utility to format it as a single Mac OS Extended (Journaled) volume. Restore your information to the disk and try using Boot Camp Assistant again."
Problem is, my Macbook is already a single Mac OS Extended (Journaled)! Any idea of what I should do to get around this? Do I have to wipe and restore my files? I'm using Boot Camp 4.0.1

Kappy wrote:
The problem:
You are asking for more contiguous space than is available on the drive.
The drive is highly fragmented.
Here's what you need to do:
Request a smaller Windows partition. If that isn't feasible then do the following:
Cheap and Easy Defragmentation
You will have to backup your OS X partition to an external drive, boot from the external drive, use Disk Utility to repartition and reformat your hard drive back to a single volume, then restore your backup to the internal hard drive.
1. Get an empty external hard drive and clone your internal drive to the
       external one.
2. Boot from the external hard drive.
3. Erase the internal hard drive.
4. Restore the external clone to the internal hard drive.
Clone using Restore Option of Disk Utility
1. Open Disk Utility in the Utilities folder.
2. Select the destination volume from the left side list.
3. Click on the Restore tab in the DU main window.
4. Select the destination volume from the left side list and drag
       it to the Destination entry field.
5. Select the source volume from the left side list and drag it to
      the Source entry field.
6. Double-check you got it right, then click on the Restore button.
Destination means the external backup drive. Source means the internal startup drive.
Restart the computer and after the chime press and hold down the OPTION key until the boot manager appears. Select the icon for the external drive and click on the upward pointing arrow button.
After startup do the following:
Erase internal hard drive
1. Open Disk Utility in your Utilities folder.
2. After DU loads select your internal 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
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       reported on external drives. Otherwise, click on the Partition tab in the
       DU main window.
3. Under the Volume Scheme heading set the number of partitions from the
       drop down menu to one. Set the format type to Mac OS Extended
       (Journaled.) Click on the Options button, set the partition scheme to
       GUID then click on the OK button. Click on the Partition button and wait
       until the process has completed.
Restore the clone to the internal hard drive
1. Open Disk Utility in the Utilities folder.
2. Select the destination volume from the left side list.
3. Click on the Restore tab in the DU main window.
4. Select the destination volume from the left side list and drag
       it to the Destination entry field.
5. Select the source volume from the left side list and drag it to
      the Source entry field.
6. Double-check you got it right, then click on the Restore button.
Destination means the internal hard drive. Source means the external startup drive.
Note that the Source and Destination drives are swapped for this last procedure.
I've come across this problem myself, so I attempted this procedure, although I receive an input/output error when trying restore my internal hdd to my external. I have never a problem with either. Could I instead create an image using DU and save it to the external drive then extract that image to my internal drive later? If so, is there any additional steps I need to take?

Change partitions on disk with NTFS and Mac OS Extended

I have a 1.5TB external drive formatted with 3 equal size partitions: 1 NTFS and 2 Mac OS Extended formats, each one ~500GB. I'd like to remove the NTFS partition and use the whole drive for the 2 Mac partitions. Could I copy the NTFS data to one of the Mac partitions, then delete the NTFS partition, and then enlarge the two remaining partitions, of course without losing the information that's already on each of them? My system is OSX 10.7.5 -- Lion.

Purple Finch wrote:
I have a 1.5TB external drive formatted with 3 equal size partitions: 1 NTFS and 2 Mac OS Extended formats, each one ~500GB. I'd like to remove the NTFS partition and use the whole drive for the 2 Mac partitions. Could I copy the NTFS data to one of the Mac partitions, then delete the NTFS partition, and then enlarge the two remaining partitions, of course without losing the information that's already on each of them? My system is OSX 10.7.5 -- Lion.
Probably maybe, with a fair wind & some luck…
It depends on a few factors, such as the order of the partitions on disk, how the disk was originally created, what partition scheme it uses (e.g. GUID, Master boot record…). It also depends on if all that data can be crammed into an existing partition.
I doubt you want to hear this, but it is the safest option… backup the data on every partition before you begin modifying the disk structure.
You have nothing to lose with solid backups on another disk, disconnect it to be extra cautious.
If this disk fails to repartition or you find that the 2 remaining partitions won't not expand to fill all the free space (it just happens sometimes) you can create a new partition table & start over.
Disk Utility may also complain when you try to resize or delete a partition - sometimes it waits until the last button is pressed to begin a task only to tell you something isn't possible!
I wouldn't attempt this 'copy, delete, resize' unless I could afford to lose all the data on this disk, it should work, but there is too much room for error.

Disk Utility works for FAT but fails for Mac OS Extended

Hi Folks,
I have a 2TB WD My Book drive that I am trying to format as Mac OS Extended for Time Machine. Disk Utility will cheerfully format it as FAT (the FAT drive shows up in finder and seems to work fine), but won't format it as Mac OS Extended. I'm trying to figure out whether this is a hardware error, or whether I am doing something wrong.
To format it for Mac OS Extended, I am going into the partition tab, removing the current (FAT) partition, and adding a new Mac OS Extended partition. When I do this, Disk Utility shows the new partition as "grayed out" and it does not mount in Finder.
If I run Verify and Repair, I get the following errors:
Verify and Repair volume “Untitled 1”
Checking Journaled HFS Plus volume.
Invalid node structure
Invalid B-tree node size
Invalid record count
Invalid B-tree node size
The volume could not be verified completely.
Volume repair complete.Updating boot support partitions for the volume as required.Error: Disk Utility can’t repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files.
Am I doing something wrong here, or does this sound more like a hardware failure?
Thanks!

@kbd1: Yes, if I erase the disk from the erase tab and format it as MS-DOS (FAT) the disk works just fine. If I erase and format it as Mac OS Extended, I get the same errors listed above and it doesn't mount.
@Thomas: Yes, if I set the format to GUID I get the same errors. I've even tried setting up two partitions: one FAT and one GUID and the FAT one mounts and the GUID one doesn’t.
So, from both of your responses it sounds like hardware, which makes sense. What is strange to me is that it works as a FAT drive...
Message was edited by: terpfan

HT4407 Hey, I am unable to install windows 7 using 'bootcamp 5.0' . I have already partitioned the drive as (mac Os Extended Journaled) and yet it seems bootcamp won't acknowledge this?

Hey, I am unable to install windows 7 using 'bootcamp 5.0' . I have already partitioned the drive as (mac Os Extended Journaled) and yet it seems bootcamp won't acknowledge this?
My first thoughts were that 'bootcamp' was out of date...needed an upgrade to register windows 7. Since then I am once again met with the same problem... how can it not see the I have already have a paritioned drived ready to be used for installition, is there a way to fix this problem? I don't really want to pay out for 'i-parition' only to merge my 2 drives back into one and start again from scratch =/. Seems silly to do so...what are my options?
Regards Swishi...p.s If anyone can help me...it'll make my day :3.

ONE PARTITION.
You don't need to buy anything but you should have backups.
you can delete #2 you created. Then resize to full drive.
There are already
GPT
EFI
Mac
Recovery
and there needs to be Windows which cannot be higher ID
Reading the instructions first and just swallow whatever pride or inidignation. It is a "my way or highwar" setup and utility,.
http://manuals.info.apple.com/en_US/boot_camp_install-setup_10.7.pdf
create a Windows support software (drivers) CD or USB storage media
http://support.apple.com/kb/HT4407
The Boot Camp Assistant can burn Boot Camp software (drivers) to a DVD or copy it to a USB storage device, such as a flash drive or hard drive. These are the only media you can use to install Boot Camp software.
https://support.apple.com/kb/HT4569
Installation Guide Instructions for all features and settings.
Boot Camp 4.0 FAQ Get answers to commonly asked Boot Camp questions.
Windows 7 FAQ Answers to commonly asked Windows 7 questions.
http://www.apple.com/support/bootcamp/

Error code -50 on boot partition (Mac OS Extended (Journaled) )

I`m often experiencing error code -50 when trying to change or move files on boot partition (Mac OS Extended (Journaled) ) on my MacBook PRO 5,5.
I already know that this error is related to MS-DOS formatted disks. But this one is all the time Mac OS Extended (Journaled).
All the files are created on Mac OS X 10.6.7 - so there can`t be a problem with a filename.
Is there another solution than corrupted harddisk?

while the next error code -50, I looked into Console and kernel says: "BootCache: too many history clusters (151, limit 151)". So that`s the cause of error, but how can I manage with it?
I tried this one in Terminal
code:
/usr/sbin/BootCacheControl stop
but no success. "-BootCacheControl: could not stop cache: Operation not permitted"
any ideas?

Failed to mount partition of MAC OS Extended (HFS+)

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