Boot partition error message

My mid 2010 iMac i7 will not boot past the apple logo? I'm running 10.7.3. I have tried restoring from TM backup from recovery mode (worked the last time this happened) however upon completion it returns to the recovery screen? I made a disk of Lion when I downloaded the first time (followed same instructions sourced from numerous websites) which does not seem to work when i set to start up from this disk, just gets to the grey screen and flicks between the apple logo, a folder icon with a question mark and the circle with line through? Now I can't eject the disk either, a message appears that system can't eject and to make sure all applications are closed? Not sure how to go about closing these applications without being able to start the system? When I tried booting from the Macintosh HD I got a message that the boot cache partition was faulty? I have ran disk permissions etc all ok.
Is my HD gone or is there anything else I can try? Any assistance would be greatly appreciated.
Cheers

Ok so I spoke to tech support, who suggested deleting all data on the HD by re-partitioning and then re-installing snow leopard from start up disk, updating software then re-downloading lion. All of which worked well until lion had finished installing and re- started. At this point I got a kernel crash and that was it, all over with only solution a new HD.
Kinda mysterious because snow leopard worked when I tested it before downloading and installing lion? Disk repair reported no problems either? Tech support were somewhat preplexed as to the reasons it seemed like they had not encountered this issue before? They said that there are only 2 reasons this could happen and that is corrupt lion download from the app store, which they obviously said was highly unlikely, or that lion uses a part of the HD that snow leopard does not and that is the faulty section of the HD.
Anyway they are ordering a new HD so we'll see if that works thanks again.
Cheers

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MacBook Air will not boot. Error Message says "Your Computer restarted because of a problem."

MacBook Air will not boot. Error Message says "Your Computer restarted because of a problem."

If you can't start up and log in in the usual way, try in safe mode.
During startup, you’ll see a progress bar, and then the login screen, which appears even if you normally log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Log in as an administrator to carry out these instructions. If you have only one account, you are the administrator.
If you don't see any reports listed, but you know there was a panic, you may have chosen Diagnostic and Usage Messages from the log list. Choose DIAGNOSTIC AND USAGE INFORMATION instead.
Safe mode is slower than normal, and some things won’t work at all.
Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t start in safe mode.
If you're able to log in, launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad and start typing the name.
In the Console window, select
DIAGNOSTIC AND USAGE INFORMATION ▹ System Diagnostic Reports
(not Diagnostic and Usage Messages) from the log list on the left. If you don't see that list, select
View ▹ Show Log List
from the menu bar.
There is a disclosure triangle to the left of the list item. If the triangle is pointing to the right, click it so that it points down. You'll see a list of reports. A panic report has a name that begins with "Kernel" and ends in ".panic". Select the most recent one. The contents of the report will appear on the right. Use copy and paste to post the entire contents—the text, not a screenshot.
I know the report is long, maybe several hundred lines. Please post all of it anyway.
If you don't see any reports listed, but you know there was a panic, you may have chosen Diagnostic and Usage Messages from the log list. Choose DIAGNOSTIC AND USAGE INFORMATION instead.
In the interest of privacy, I suggest that, before posting, you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if it’s present (it may not be.)
Please don’t post other kinds of diagnostic report.

Unmountable Boot Volume error message appears

Hi.
On monday I bought Norton Internet Security 2007 and tried to install it. I was reading a word document while I was installing it. I received an error message and was asked to restart Windows XP.
When I tried to restart Windows XP. I received a message telling me there was an error that caused Windows to shut down. The message ask me to choose between:
1.safe mode
2.safe mode with command prompt
3.last know good configuration
4.start windows normally.
I choose "start windows normally"
MS Windows XP started normally for a few seconds then instead of my normally log on page I received a blue screen with this message:
"A problem has been detected and windows has been shut down to prevent damage to your computer.
UNMOUNTABLE_BOOT_VOLUME
if this is the first time you have seen this error screen, restart your computer. If this screen appears again follow these steps.
If problems continue, disable or remove any newly installed hardware or software. Disable BIOS memory options such as caching and shadowing. If you need to use safe mode to remove or disable components, restart your computer, press f8 to select start up options, and then select safe mode.
Technical information:
STOP: 0x00000ED (0x80E(1E30, 0xC000031, 0X000000000) "
And the then my computer shut down and then restart in the same sequence.
IT keep repeating the sequence: error message safe mode ect ect then blue screen, shut down and restart. Again and mo matter which mode I choose. I went on online(from a borrowed computer) to research what is going on with my notebook and I still have the problem. They told me I must uninstall the software that caused the problem. My question is have can I uninstall the software when I can't reach Window's log on and hence the control panel?
I'm at my wits end. Please help.

Hi
I dont know why but it seems that your master boot sector is damage
You could try to access the repair console (boot from original windows CD and then press R)
Then try to use this command: chkdsk /p
This command should repair some sectors on the HDD. Maybe it helps.
If not then you should format the whole HDD and reinstall the OS again!

Boot drive error message

Following a near disaster after installing security update 2005-009 i have 2 problems ( or maybe only 1)
When i do a verify on my boot drive i get the message from disk utility, INCORRECT NUMBER OF THREAD RECORDS, volume needs repair but it cannot fix it.
Any suggestions.
Second after I managed to get my boot drive running again following many kernel panics I now have a folder called damaged files, can I discard this as it seems to mirror my HD

Hi, Paul and Allan, et.al —
Paul — Fwiw, I agree with Allan about your apparent options.
When you launched Disk Utility from your Install Disc as part of running Disk First Aid, did you notice the S.M.A.R.T. status of your HD?
Before saying another word — have you tried to access and save any data that may not have been included in your last backup? Using FireWire Target Disk Mode from another (or borrowed) Mac might be a means to accomplish this...
I'm not familiar with the specific "incorrect number of thread records" error message you received — so everything below should be considered conjectural or based on the perspective of the references cited. Each file and folder (directory) in an HFS+ file system must have a unique thread record. Apple describes the technical details in technical note TN1150: HFS+ Volume Format and the File Manager Reference. On a more layperson's level — paraphrasing and quoting from this source and its linked refs. — on an HFS+ formatted volume, a Catalog file contains records for all the files and directories stored in the volume. File thread records and directory thread records are two of four types of records contained in the catalog file. A file thread record stores just the name of the file and the Catalog Node ID (CNID) of its parent directory; similarly, a directory thread record stores its name and the CNID of its parent directory. The other two records are file records and directory records that "store a variety of metadata — including CNID, size, time-stamps, the first file extents of the data and resource forks, and pointers to the file's first data and resource extent records in the Extent Overflow File."
My point in considering this is that an incorrect number of thread records suggests that the catalog file can't do its job properly in helping you to access your files and directories. As Allan concluded, this sounds like a potentially significant disk directory problem. Although the terminology differs, a MicroMat (makers of TechTool) tech addresses a TechTool "file thread mismatch (-92) error" message in this MacFixIt forum thread. Several users report their experiences. If the Disk Utility "incorrect number" and TechTool "thread mismatch" messages are comparable... the MicroMat tech's comment that "Unfortunately, the file thread mismatch is an uncommon disk directory error, and it is not possible to know whether the ultimate cause is software or hardware" may be relevant.
I hope that you follow Allan's advice — and that DiskWarrior 3.0.3, TechTool Pro 4.0.6, or ProSoft's DriveGenius 1.1.5 is able to repair the problem — or that you're in a position to perform an Erase & Install. Please keep us apprised of your progress, so others may learn from your experience.
Good luck!
Dean

Help needed with delete of bootcamp partition, error message 'Couldn't unmount disk'

Hello all
Sorry if this issue has been repeated elsewhere, I did search but there wasn't a discussion relating to my specific issue.
When we bought the iMac a couple of years ago, my husband partitioned the hard drive to run Windows via Bootcamp. Having got used to the Mac and experiencing the frustration between having to reboot to access each partition I have decided to restore the Mac to factory settings and install Parallels 8 so I can continue to use Office and Coreldraw).
So having backed up all of my files, I started the Mac up holding the 'Alt' key and then loaded the Recovery HD mode followed by Disk Utility. I then selected Bootcamp and erased all data from the partition. [Note: there are 2 files left which it won't allow me to erase through this method]
I then selected the main drive and the tab 'Partition', from the layout I then selected Bootcamp and clicked the minus button. I get the message confirming which partition I am about to delete and hit remove. I then get the error message 'Partition failed: couldn't unmount disk'.
I would be very grateful for some help please? I am not the best techy person but happy to give anything a go.
Just to mention there is nothing left on the Mac that I want to keep, therefore if there is an easier way than having to delete the partition then happy to hear it.
Thanks
Tara

Hello Tara,
Are you using Filevault?
https://kimmo.suominen.com/blog/2013/03/file-vault-volumes-cannot-be-resized/
Also see the last few posts here...
https://discussions.apple.com/thread/3894449?start=15&tstart=0

Boot Manager error message on Windows 7 Toshiba Laptop

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WINDOWS BOOT MANAGER
Windows has encountered a problem communicating with a device connected to your computer.
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I would appreciate some help. I just got this computer in December 2009 for Christmas, and I have taken good care of it as far as I can tell. I really can't afford to replace anything right now, but if I have to I will find a way. What makes it worse is that I just got a new video game sent from my grandmother for my birthday....
Thank you for your help/thoughts/crap

it looks like a corrupted windows 7 OS or hdd issue , but you might try this one
Remove all usb devices and make sure that only ac adapter is plugged in your computer.
Turn on your computer and start tapping on F8. You should see windows advanced option when you do this.
Select on Safe Mode then Enter. If you can boot to safe mode you can try doing a system restore.
OR
On windows advance option. Select Repair my computer
Just follow the prompt and select system restore.
OR
On windows advance option. Select Repair my computer
Just follow the prompt and Windows Startup Repair
=========================================================
the only easy day was yesterday.....
=========================================================

Boot/Partition Error

After partitioning my hard drive, first using Disk Utility and then GParted (to change the format of this new partition to something besides Mac Extended Journaled) and then an incomplete install of FreeBSD onto this new partition (note, the partition containing my OS X still worked fine until I began the actual installation of FreeBSD) my MacBook will not boot. Using ubuntu LiveCD, I was still able to mount the partition containing OS X and explore the file system, and all the files were still there; however, it seems the boot partition has some error with it, and also the OS X partition has lost whatever makes it able to be recognized by OS X's Disk Utility.
If I boot to the setup DVD for Leopard, the Disk Utility does not even recognize that there is a valid Mac (hfs+) formatted partition on the hard drive, though it can find a second partition which should be listed as unallocated space.
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"Inaccessible boot device" error message when I try to boot up.

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I have excatly the same issue on my WT8-A. I have been running Windows 10 as an Insider for months on the device, and after RTM decided to do a full reset. I now get the same message as the OP saying "INACCESSIBLE BOOT DEVICE" I now have an unusabe device. Please help.

Boot up - Error Message: "File System not clean"

<blockquote>Locked by Moderator as a duplicate/re-post.
Please continue the discussion in this thread: [tiki-view_forum_thread.php?locale=en-US&comments_parentId=667528&forumId=1]
Thanks - c</blockquote>
== Issue
==
I have another kind of problem with Firefox
== Description
==
At start up displays error message: File System not Clean"
== start up computer
==
== Troubleshooting information
==
WebOfTrust, AdBlock Plus 1.2, Ubuntu Firefox Modifications 0.7, Firefox Universal Uploader (fireuploader) 0.4.1, Foxytunes 4.0.6
== Firefox version
==
3.0.19
== Operating system
==
Linux
== User Agent
==
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.19) Gecko/2010040116 Ubuntu/9.04 (jaunty) Firefox/3.0.19 GTB7.0
== Plugins installed
==
*-The default plugin handles plugin data for mimetypes and extensions that are not specified and facilitates downloading of new plugins.
*The demo print plugin for unix.
*Shockwave Flash 10.0 r45
*DivX Web Player version 1.4.0.233
*The Totem 2.26.1 plugin handles video and audio streams.

http://ubuntuforums.org/

Boot up error message

why do I keep getting "The disk you inserted was not readable by this computer"

It's a WD passport that I've been using as my Time Machine backup for quite some time.
This problem just started for no apparent reason.
I can still read the BU disk. Ran Disk 1st Aid. Dragged it to the Trash. Unplugged it normally. Restarted the Mac (no error). Plugged it back it and got the message again.

Boot gives error message "RPC: Timed out"

All,
I had to configure my solaris 2.7 machine for networkring.
I used the sys-unconfig command because I was not sure about which files I had to modify.
The sys-unconfig did not work and I ended up modifiing the files anyway.
However now when I reboot I get:
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How can I get the rpc time out error to stop

Hi
Try booting cdrom into single user and mounting the root filesystem. Then
check the following files:
/etc/hosts -- should have your hostname and ip address in it
/etc/nsswitch.conf -- if you don't want DNS, NIS etc, make sure this looks like nsswitch.files
/etc/nodename -- this should have your host name in it
/etc/rc2.d
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/etc/netmask -- check you have the correct netmask set in here
/etc/hostname.hme0 -- this should have just the hostname in it
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Reboot again and see if it comes up OK, there maybe some other things that need fixing,
in which case you may have to boot cdrom again.
regards

Can´t boot 0x0000185 error message on windows 8.1

i have a lenovo ideapad flex 10 with win 8.1 preinstalled and with 2 usb ports only, was working on internet when suddenly my screen went black and tried to restart it and it got stock on lenovo logo, restarted again and press f8 to fix windows and i got
a message that said can´t find device 0x0000185 use system utilities or contact system admin. Need help

Hi,
The system fails to boot, in this case, I suggest to repair the system with a installation media if you have at hand in this way:
1.Insert the system repair disc into your CD or DVD drive.
2.Restart your computer using the computer's power button.
3.If prompted, press any key to start the computer from the system repair disc.
•If your computer isn't configured to start from a CD or DVD, check the information that came with your computer. You might need to change your computer's BIOS settings.
4.Choose your language settings, and then click Next.
5.Select a Automatic repair, and then click Next just as the screenshot below:
If this fails to work or you don’t have a DVD installation media, you should turn to Lenovo for support.
Regards
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TechNet Community Support

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Hi everyone,
So I don't know a whole lot about computers, and I have had my macbook for a couple years now and decided to install Lion last night. After I downloaded it, I got an error message saying that it could not be installed and I needed to change my HD's partitioning to GUID. The internal HD I have in my mac now I installed myself, and I must have accidentally clicked apple partition map instead of GUID when I installed it, which didn't cause a problem until now (my macbook has an intel processor). So i backed up everything on my HD to an external HD using carbon copy, hoping that I would just be able to reformat/partition my internal HD correctly and move everything back onto it from my external drive. I booted my computer using the external drive, and tried to repartition using disk utility, but I keep getting a partition error message that tells me the disk cannot be unmounted. I got the same message when I tried just erasing the disk first. Anyone know how I can fix this?
Thanks, and Happy Holidays!!

Try starting from your Snow Leopard Install disc.

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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.
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Boot Camp Error "You cannot partition an external disk drive"

Hi all - I am trying to install Windows XP Pro via Boot Camp for the first time. I have all four bays of my MacPro (circa 2007) filled with hard drives. I boot off the first bay, and have a cal digit raid card that controls the other three hard drives into a RAID5 array. I believe that the raid card may be the culprit.
I am trying to install boot camp/WinXP on the first drive. I get the error in the title above when I try to run Boot Camp. I have ejected the RAID5, and I have rebooted to no avail.
I cannot wipe my first drive/boot drive clean. I just wish to partition it via BC so I can switch between XP and Mac OSX. Any guidance is appreciated.
Thanks.
Tri

Try removing the other drives is almost always essential with a Mac Pro to get Windows to work. Even Windows 7 doesn't understand seeing Apple GPT/EFI during install - they can be reinstalled later.
Or it could be that any hardware RAID controller also has to be removed. Like Apple's Pro RAID or ATTO FC.
Even w/o the CalDigit and just Apple GPT you would have gotten an error message.
BCA is still after all these years unable to understand and work with a Mac Pro properly. A one-trick/ one-drive only utility that is stumped when it runs into a dual drive setup. Which way why I gave up on using Mac Pro for dual-boot and built some PCs just for Windows 7. I install Windows on PC, then transfer the drive to Mac Pro and it works just fine!
Xserve RAID Card: Boot Camp does not support RAID configurations
Xserve RAID Card: Boot Camp does not support RAID configurations ... Boot Camp does not support the installation of Windows onto a Mac using hardware or software RAID (Redundant Array of Independent Drives). This includes Microsoft Windows built-in software RAID as well as the Mac Pro RAID Card.
http://support.apple.com/kb/HT2855

Boot partition error message

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