10.6.7 netboot image won't unmount internal hdd in disk utility

I recently upgraded my snow leopard server from 10.6.6 to 10.6.7 in order to use the latest SIU to create some diagnostic images for the new MBP Early 2011. I can create the images just fine and can netboot the early 2011 MBP to the images, but when i try and use disk utility to repair the internal hard drive it says that it can't unmount the drive. Disk utility can unmount all external drives and repair them but not the internal drives.
My source machine is the early 2011 MBP and I placed the 10.6.7 OS on the internal hard drive. Once I made all the adjustments to my source machine, I put the source machine in target disk mode and connected it to my mac mini server via firewire 800. I used the default options for creating a netboot image in SUI. The image is created every time I try this but I can't get disk utility to unmount the internal hard drive for diagnostics. Any ideas?
Thanks,

Not sure if you've tried it on more than one client...
I've seen this occur when the HD on the client was corrupted. I had to boot from an install CD/DVD and use DU to erase the HD. Once I did that, the netinstall ran just fine.

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IMac (27-inch, Mid 2011) 2.7 GHz Intel Core i5 4 GB 1333 MHz DDR3 running10.10.2 (14C1514). Trying to install Windows 7 64 bit from an install disc. When attempting to create an ISO image I can save the file in disk utility but can convert cdr to iso

iMac (27-inch, Mid 2011) 2.7 GHz Intel Core i5 4 GB 1333 MHz DDR3 running10.10.2 (14C1514). Trying to install Windows 7 64 bit from an install disc. When attempting to create an ISO image I can save the file in disk utility but can convert cdr to iso. I select the file and the hit return as in step 8 of the Creating an
iSO image document but the box that should open to select use iso does not open. How should I proceed?

The Mac SuperDrive built into your Mac is the Optical drive.
1. Insert your Windows DVD in Optical drive. Disconnect any external storage.
2. Insert a USB2 Flash drive. This will be used to hold the BC drivers.
3. Start BCA. Check the options to download software and Install Windows. You do not need to download Windows. The BCA will download the BC drivers to the USB.
4. Partition your drive.
5. You can see the Windows installer screens at https://help.apple.com/bootcamp/mac/5.0/help/#/bcmp173b3bf2.

Disk images won't unmount/eject for admin user, DVDs & iDisk also affected

This problem started when I was on Tiger, and seemed to follow me onto Leopard.
It only affects me, the primary user on my Mac. *One other user on the computer; she also has admin level access and does not have any of these problems.*
Here's the deal:
*Once mounted, disk images won't eject/unmount.*
- Dragging to the trash can doesn't work. The eject icon appears, but nothing happens.
- Ctrl-click does not show Eject as an option when highlighting the mounted image.
- CMD-E doesn't work
- EJect doesn't appear as an option in the finder menu
- Clicking on the Eject button in the sidebar of the Finder window doesn't work.
- I've logged out, rebooted, repaired permission, and installed a new OS (clean install of 10.5, then did the import of my old user settings. Since I had the problem in Tiger, it's clear the problem followed me, but what the heck causes it?)
*The only way to unmount/eject a disk image is to use the Disk Utility Program.*
*DVDs also can only be ejected via Disk Utility*
The iDisk connection can only be killed by opening Activity Monitor and killing the webdavfs_agent process.
Would love some help. I've searched a lot and have a fair amount of folks with this problem, but no real solution.

That'll work; however, then the OP has to reset all of his preferences. Easier would be to log into the newly created admin account, backup the bad account's folder, delete the bad account, selecting the save data option (which is stored in /Users/Deleted Users/ as a disk image), recreate the bad account using the same username/password combo, log out and back into the recreated original account. Mount the saved data dmg file in /Users/Deleted Users/, open the /Library/Preferences/ folder from the saved data, open the current /Users/restored account/Library/Preferences/ folder, and slowly copy plist files from the saved data folder to the current one. Log out and back in to ensure there's no conflict and things still work correctly. Resolving these kinds of conflicts is a laborious process, but not as laborious as resetting preferences or even remembering what you set weeks, months, or years ago.

Mavericks NetBoot Image won't boot (access denied symbol)?

I'm starting the process of creating some new NetBoot Images to support Mavericks and I'm having boot issues that I've never come across before (I've been building NetBoot images for years using using OS X 10.4–10.8). I always make sure to use the latest OS version available at the time to support our latest hardware (mainly iMacs and Mac minis).
Right now, I'm using a Mac mini (Late 2012) running OS X 19.9.3 (13D65) to build a Mavericks-based "Tool Kit" NetBoot Image (for drive recovery tasks, drive repairs, etc.). Using the same process I've always followed, I've installed/configured the Mavericks "Tool Kit" system (also OS X 19.9.3, build 13D65) itself on an external FireWire drive attached to the Mac mini, then run System Image Utility (10.9.3, build 677) from the Mac mini (internal drive) to then create the NetBoot Image (using the system on the external FireWire drive as the source).
Everything proceeds as normal, but when I load the image onto my NetBoot Server (OS X Snow Leopard Server, dedicated to NetBoot), client machines fail to boot off the image (they attempt the NetBoot, but get the "Access Denied" flashing symbol. Normally, I'd get this when trying to boot a system pre-installed with a newer version of the OS than exists in the NetBoot Image (or, when the hardware requires a hardware-specific OS version, which isn't what the NetBoot Image is running), but that's not the case here (as I'm able to successfully boot these same machines using my 10.8 "Tool Kit" NetBoot Image).
As well, I'm able to boot these machines from the Mavericks "Tool Kit" system via the FireWire drive directly. So, hardware is "capable" of booting the system I've built, but not when attempting to boot via my NetBoot Server.
So, I'm wondering if anything has changed with Mavericks that would result in Mavericks-based NetBoot Images not being able to boot from images served from Snow Leopard Server? Honestly, I don't think this is the case though, because I'm able to serve DeployStudio-created Mavericks-based NetBoot images (served from the NetBoot Service running on this Snow Leopard Server box) to these same machines, without issue. The the DeployStudio created image was built using the same "Tool Kit" system as a base for the image creation. So, it really doesn't seem like an issue with Snow Leopard Server nor the Mavericks base-system I've built to create the images—it seems like it's an issue with the images created via System Image Utility.
Anyway, I'll continue my trouble-shooting, but if anyone has any advice, it'd be greatly appreciated!
Thanks,
Kristin.

In this discussion it is said that 10.9.x does not NetBoot on certain models due to a microcode issue.
https://jamfnation.jamfsoftware.com/discussion.html?id=9836

If leopard won't boot from dvd, use disk utility mount to partition

wanted to share a way that i successfully installed os 9, tiger, and leopard on 1 hard drive. first of all, leopard was the only installation that i had difficulty with. it would not boot off the original dvd, no matter if i held down the 'c' key or the option key, so this is what i did after a lot of reading on the internet to try and troubleshoot this issue.
First thing i did was partition my internal hard drive in 3 partitions using disk utility. the 3rd partition was around 9gb. I installed os9 first on the 1st partition, i then installed tiger on that same partition. then i put in my leopard dvd, and opened up disk utility. and clicked on "restore", and dragged the dvd image as the "source", and chose the 9gb partition as the destination, and clicked on restore. then, i changed the "startup disk" to start from the 9gb where i just restored the image, and rebooted, and went through the leopard setup and chose the 2nd partition as the place to install. this should work with the dvd, or if you made an image from the dvd. I hope this helps someone else whose dvd won't boot, because it was very frustrating after you purchase a faster processor, and faster video card so that your system meets the requirements, and then the dvd won't boot.

Two ways. Use another computer to restore the install disc to one of those ext HD. Then, use it to boot the other machine. Get an ext CD/DVD reader and use it to read the install disc and boot the machine. However, if both the HD and optical reader are kaput, then a trip to an Apple repair station is in order.

My WD hard drive won't "mount" it shows in disk utility but can't be repaired. I'm thinking this is a software issue since the disk is being recognized.

I
I have a WD drive that won't "mount". Tried repairing, turning off and back on, unplugging and nothing has worked. Can anyone help?

The WD Passport has no independent power supply, relying instead on getting power from a USB port on the computer. AS the drive ages it can need more power to spin the platter and many USB ports on notebook cannot provid that much.
Anther issue is the WD drive itself. WD uses an odd proproprietary formatting scheme that makes the drive not always behave like typical Mac drives.
If the drive contains nothing you need to access, use Disk Utility to reformat it to "Macintosh Extended (Journalled)"
If the drive contains important data, there are a couple of inexpensive ways to get more power to it:
1) Get a "Y" conenctor cable like this:
http://eshop.macsales.com/item/OWC/USB2AYMBPB/
It draws power from two USB ports and ofter that is enough to make the drive work.
2) Get a powered USB Hub:
http://eshop.macsales.com/item/NewerTech/USB2HB7PRO/
It has its own power brick and that is usually enough to get an older USB external drive recognized.

Restoring .dmg image from external to Mac HD in Disk Utility: "Unable to scan image (Input/output error)"

Hi guys,
So I've got a problem with restoring the image backup I did (using Disk Utility) of my 500GB HD on my MBP which was acting weird or maybe even crashed a few months ago. After creating the backup image and putting it on my external device, I installed Mavericks back to see if everything was alright (mainly the HD) and everything seems okay.
I did try restoring the backup image through disk utility before installing mavericks (thus erasing everything again on the HD) AND after. But nothing..
The whole process starts fine and then it starts scanning the image when after maybe a good 10-15min in I get a message that says that it was unable to scan the image. I tried verifying the disk(s), everything came out "OK". Also tried scanning it through Images > Scan image for Restore... with the same results.
While searching I've seen people getting messages like "Unable to scan filename.dmg (Invalid argument)" and "Unable to scan filename.dmg
(Internal error)" but none have (Input/output error)
The screen grab is below.
I also came across something about using terminal/commands but I'm not that savvy with it, especially considering that those there had issues with either mounting or trouble finding the image.
I've also tried moving the backup image to a different external device 2TB and also the desktop because I read it may have to do with the format of the externals or maybe free space. But THEN I would get a message saying
"The Finder can't complete the operation because some data in "Mac HD Backup.dmg" can't be read or written. Error code -36"
Fyi ALL my externals are HFS+/Journaled and the backup image format was compressed.
I REALLY don't know what to do next. Was it the wrong move to create a dmg image? Have I lost everything? Is there still a way out?
If anyone can help, THANKS!
2012 MacBook Pro, Mac OS X (10.9.3)

Make a "Genius" appointment at an Apple Store, or go to another authorized service provider. You may have to leave the machine there for several days.
Back up all data on the internal drive(s) before you hand over your computer to anyone. There are ways to back up a computer that isn't fully functional—ask if you need guidance.
If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.
Keeping your confidential data secure during hardware repair
Apple also recommends that you deauthorize a device in the iTunes Store before having it serviced.
*An SSD doesn't need to be zeroed.

External hard drive suddenly won't mount, but shows in Disk Utility.

Running OS 10.6.8... Disk Utility sees it and there's no issues when verified or repaired. The partition is grayed out and won't mount through Disk Utility. I've also tried mounting via Terminal, but same result. I've connected other drives, so I know it's not the wires or ports. When I turn the power on, it spins up and seems to be working properly. I don't have another mac to test it on. Any ideas would be greatly appreciated.
Here's the info from Disk Utility:
Name :     BACKUP
    Type :     Volume
    Disk Identifier :     disk1s10
    Mount Point :     Not mounted
    File System :     Mac OS Extended (Journaled)
    Connection Bus :     FireWire
    Device Tree :     IODeviceTree:/PCI0@0/RP05@1C,4/FWBR@0/FRWR@0/node@30e0f4e010a9d6/sbp-2@c000
    Writable :     Yes
    Universal Unique Identifier :     C3BC8998-F686-3A0F-A1AF-11260799EABA
    Capacity :     319.94 GB (319,937,773,568 Bytes)
    Owners Enabled :     No
    Can Turn Owners Off :     Yes
    Can Be Formatted :     Yes
    Bootable :     Yes
    Supports Journaling :     Yes
    Journaled :     No
    Disk Number :     1
    Partition Number :     10

You don't have a PowerMac if you have a Mac Pro. You don't have a PowerMac if you have Mac OS X 10.6. PowerMac is the name for the desktop professional Macs prior to mid-2006.   Two possibilities, the drive is dead, or the drive has a bad directory.   For a fee you can isolate either on my FAQ*:
http://www.macmaps.com/directoryfaq.html
* Links to some of my pages may give me compensation.

External hard drives UNMOUNT when verifying with disk utility

I have two external Lacie hard drives attached to my iMac. One is just for general backup purposes. The other is for Time Machine.
Today when I got home, for some reason the Time Machine drive was not appearing on my desktop. I rebooted the computer, the Time Machine drive reappeared, I ran a back up, everything seemed to be working fine.
To make sure the disk was ok - I ran disk utility. When I selected "verify drive" from disk utility - the disk suddenly UNMOUNTED itself, at the point of cataloging the hard drive, and the verification process stalled. What was originally a 1 minute verification suddenly changed to a 17 minute, then a 33 minute, etc.
I tried booting up in recovery mode (Command -R at startup) and the same thing happened. Are the drives going bad?

Actually - I think when disk utility verifies the disk - disk utility itself actually "unmounts" the disk during the verification process. Probably so the disk cannot be accessed by anything else but disk utility.
I feel sort of silly, because what I thought was "stalling" was really just the disk utility going through its proper verification of the catalog file, multi-linked file, directories, etc.

Powerbook won't boot past apple screen, disk utility can't repair

Last night I applied the most recent software updates, I don't remember exactly what they were but there was a Java update, a security update, a quicktime update and an itunes update. after the required restart, my powerbook g4 won't boot past the apple icon screen.
I can't boot it into safe mode or single user mode.
I can start it up in target disk mode and transfer a handful of files/directories at a time before it hangs.
When I try to run the repair in Disk Utility against the target disk, it gets about halfway before the following:
Verify and Repair disk “Macintosh HD”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Invalid sibling link
Volume check failed.
Error: The underlying task reported failure on exit
1 HFS volume checked
1 volume could not be repaired because of an error
the disk doesn't make any grinding or anything, just a few clicks when it tries to boot but nothing bad sounding.
Is my computer hosed? Is it worth bringing it to the genius bar?

Hi, Pat. How much time did you give DW to complete its work? Locating the data it needs to rebuild your directory can take a while — that's the step at which DW far outperforms other utilities. It digs deeper and tries harder than anything else, and that can take a long time. The longest successful DW "fix" I've seen reported here in the seven and a half years I've been participating in Apple Discussions was *14 days* of continuous work to find the necessary data and reconstruct a hard drive directory from it. That was after all other disk utilities had been tried and had failed; it was the user's last hope to save data that hadn't been backed up anywhere. If you haven't allowed DW at least a few hours to accomplish its task, give it another chance. And don't try to use the computer for anything at all while DW is working.

External RAID0 won't mount in Finder or Disk Utility

Hi everyone,
Thanks in advance for any help you can provide.
I have a Western Digital Passport RAID0 that I connect to my 2008 Mac Pro via Firewire 800. It has worked for years. I switched out one of the drives about a year ago after it went bad, but when I did that, Disk Utility was still able to see the two separate drives when plugging it in the first time after switching them out.
This time, when the RAID0 wouldn't mount in Finder, I opened up Disk Utility and neither drive showed up. So I opened up the enclosure and tested both drives in a USB dock. One mounted fine, the other said it was unreadable. So I set the unreadable one aside and switched it out with a same-size replacement drive that I had partitioned as MacOS Extended Journaled (non-case sensitive) with GUID partition table (same as the other drive and all drives on my system).
Reassembled the enclosure and plugged it back in. Still, neither drive is recognizable by Finder or Disk Utility. Verified it has power and that the cables are seated correctly. I also tried USB connection just to be safe.
I do not believe the RAID controller in the enclosure is bad—at least it seems very illogical that a drive and the controller would fail at the same time, as I have it well protected against power surges.
Any thoughts as to something I may be missing or known issues? I upgraded to Yosemite at its public release but successfully used the drive between then and now.
Thanks again!

Eric, nifflerX and nbar:
That's what I was afraid of.
Thanks for your help.
Stonely

1TB WD Caviar Black SATA internal drive won't mount on desktop or Disk Util

I just installed this brand new drive in bay B of my G5 tower...it doesn't appear on the desktop, and not in Disk Utility. Can a 1 TB SATA3 drive be functional in a G5? The owner's manual only mentions a maximum 250GB (or 500GB drive, don't recall) ; maybe that was the biggest available in 2004/05?

Thanks, all. I found a link to WDC drive jumper settings (http://wdc.custhelp.com/cgi-bin/wdc.cfg/php/enduser/stdadp.php?p_faqid=1337&p_created=1112379341&p_sid=eST7ItDi&p_accessibility=0&p_red irect=&p_lva=&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9NDg3J nBfcHJvZHM9MCZwX2NhdHM9MCZwX3B2PSZwX2N2PSZwX3NlYXJjaF90eXBlPWFuc3dlcnMuc2VhcmNoX 2ZubCZwX3BhZ2U9MSZwX3NlYXJjaF90ZXh0PWp1bXBlciBzZXR0aW5ncyBzYXRh&p_li=&ptopview=1), and jumpered pins 5 and 6 to limit transfer speeds to 150 MB/s. On restart, the OS prompted me to initialize, which I did, and voila, the drive is mounted.
Question: it appears the jumper setting is to convert a SATA2 dirve to SATA1. Is there any reason to try (or jumper setting that would enable) converting my SATA 3 drive to a SATA2 configuration?

External drive won't mount on desktop or disk utility

iMac w/optical drive, running 10.6.8
Using a 2 TB Seagate Backkup drive for Mac for Time Machine backups. Time Machine notified me that no backups had been made for 22 days. Drive icon does not show on desktop and is not listed in Disk Utility. Tried unplugging/plugging power and USB cable without success. I had shut down the computer before leaving for vacation (about 22 days ago), but am pretty sure I did not move the drive icon to trash. Could this be the basis for the problem?
How do I get this drive mounted again?

Eric, nifflerX and nbar:
That's what I was afraid of.
Thanks for your help.
Stonely

Dual 1.8 G5 won't boot, first aid on disk utility failed, and the led blinks three times. I've tried the hairdryer trick but it only works for a short time. Any ideas if I can save it?

I'm starting to feel like there is no hope for my G5. I've updated the os, backed everything up, used the hair dryer and switched out the ram. Still no improvements. I'm just wondering now whether it could be the disk or the logic board.

I guess if it were me I'd try hotter/longer, then never allow it to Sleep except for the Monitor, & set Processor to Highest Energy Saver>Options tab.
If you still want a G5, they've been getting cheaper on eBay & such, here's a 1.8 with bad PSU FOR $85+...
http://www.ebay.com/itm/Apple-PowerMac-G5-1-8-GHz-DP-Dual-Processor-Bad-PS-/1107 15492187#ht_794wt_1398
But the 2.3s were the most reliable G5s overall...
http://www.ebay.com/itm/APPLE-POWERMAC-G5-2-3GHZ-DUAL-CORE-8GB-MEM-500GB-SATA-/3 80363233623
An hour left on this one...
http://www.ebay.com/itm/Apple-PowerMac-G5-Dual-Core-2-3Ghz-2GB-250GB-Super-Leopa rd-A1177-/160680216830?_trksid=p4340.m185&_trkparms=algo%3DSIC.NPJS%26its%3DI%26 itu%3DUA%26otn%3D5%26pmod%3D380363233623%26ps%3D63%26clkid%3D4264672915595326464 #ht_6431wt_1165

Won't Boot internal Start Up Disk

Hi all,
Today I had to do a hard shut down after my 2009 mac book pro froze. After this, the computer would not boot up again. I get as far as the grey screen, with the rotating "gear icon". It stays on this screen indefinitely.
I tried booting to the recover disk - it did not boot into it
I have tried doing a safe start up - nothing happened
I tried resetting the PRAM - it restarted twice, but after that nothing else changed
I tried doing the fsck -fy command, and nothing really came of that. However, it did say that the OS was "not yet set".
I changed my HDD a few months ago, and have a clone of my hard drive from then. When I plug that hard drive in and try to boot into it, it works, as the computer was a few months ago. I opened the disk utility and repaired my main hard drive, I am currently verifying the partition labled "Macintosh HD" on it. It has so far said (in red) Journal needs to be replayed but volume is read only.
Ive exhausted my knowledge so that leaves me here.
I dont think its my logic board, because I can still boot into my old HDD... but im not sure.
This leaves me thinking it could be my new hard drive that has somehow failed to connect to the Start Up Disk.
Any insight would be much appreciated,
Thanks,
Austin.

Welcome to Apple Support Communities
It looks like the hard drive is damaged. Try to repair it and see if you can use it. However, it looks like it is physically damaged and you will need to replace it.
Your MacBook Pro needs a 2'5" SATA hard drive, and you can buy near any hard drive that meet that requirement. Have a look at OWC for information > http://eshop.macsales.com/shop/hard-drives/2.5-Notebook/

10.6.7 netboot image won't unmount internal hdd in disk utility

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