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How to fix error 35: Unable to determine UUID

I am having some issues with *long* boot times and Time machine errors on my iMac. I tried disk repair and hardware test, but they did not find anything. In fact, I have a bootcamp partition that is running fine, so it is unlikely to be a hardware issue.


The above is the only error I seem to see, could this be causing the problem? Is there a way to fix it?

iMac (21.5-inch Late 2009), Mac OS X (10.6.8)

Posted on Dec 2, 2013 9:17 AM

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30 replies

Dec 2, 2013 11:39 AM in response to Keith Barkley

Follow Linc Davis's sequence from this thread; gather some data from the logs and the model ID and firmware information, and post it here.


Unfortunately, your iMac OS X version is old enough that you don't have a recovery partition, so you'll need to boot from DVD in place of that part of the tests.


Though it's entirely a guess, there's a decent chance that you have a hardware problem. In any case, definitely make a backup or two of all of your data.

Jan 20, 2014 10:43 AM in response to MrHoffman

Sorry to take so long:

Hardware Overview:


Model Name: iMac

Model Identifier: iMac10,1

Processor Name: Intel Core 2 Duo

Processor Speed: 3.06 GHz

Number Of Processors: 1

Total Number Of Cores: 2

L2 Cache: 3 MB

Memory: 4 GB

Bus Speed: 1.07 GHz

Boot ROM Version: IM101.00CC.B00

SMC Version (system): 1.52f9

Serial Number (system): W8*****B9U



12/19/13 6:38:14 PM com.apple.launchd[1] (com.apple.xprotectupdater[33]) Exited with exit code: 252

12/19/13 6:38:17 PM configd[13] network configuration changed.

12/19/13 6:39:04 PM mdworker[91] _CFGetHostUUIDString: unable to determine UUID for host. Error: 35

12/19/13 6:39:05 PM configd[13] InterfaceNamer: timed out waiting for IOKit to quiesce

12/19/13 6:39:05 PM configd[13] InterfaceNamer: Busy services :

12/19/13 6:39:05 PM configd[13] InterfaceNamer: iMac10,1 [1]

12/19/13 6:39:05 PM configd[13] InterfaceNamer: iMac10,1/AppleACPIPlatformExpert [2]

12/19/13 6:39:05 PM configd[13] InterfaceNamer: iMac10,1/AppleACPIPlatformExpert/CPU1@1 [1]

12/19/13 6:39:05 PM configd[13] InterfaceNamer: iMac10,1/AppleACPIPlatformExpert/CPU1@1/AppleACPICPU [1]

12/19/13 6:39:05 PM configd[13] InterfaceNamer: iMac10,1/AppleACPIPlatformExpert/AppleEFIRuntime [1]

12/19/13 6:39:12 PM WindowServer[67] kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.

12/19/13 6:39:12 PM com.apple.WindowServer[67] Thu Dec 19 18:39:12-XXXX-iMac.local WindowServer[67] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.

12/19/13 6:39:13 PM com.apple.SecurityServer[38] Session 0x1065521 created

12/19/13 6:39:13 PM com.apple.SecurityServer[38] Session 0x1065521 attributes 0x30

12/19/13 6:39:14 PM loginwindow[43] Login Window Started Security Agent

12/19/13 6:39:15 PM kernel NTFS driver 3.4 [Flags: R/W].

12/19/13 6:39:16 PM kernel NTFS volume name BOOTCAMP, version 3.1.

12/19/13 6:39:16 PM kernel NTFS-fs warning (device /dev/disk0s3, pid 114): ntfs_system_inodes_get(): $LogFile is not clean. Will not be able to remount read-write. Mount in Windows.

12/19/13 6:39:16 PM kernel NTFS-fs error (device /dev/disk0s3, pid 114): ntfs_next_security_id_init(): Index record with vcn 0xc is corrupt. $Secure is corrupt. Run chkdsk.

12/19/13 6:39:16 PM kernel NTFS-fs error (device /dev/disk0s3, pid 114): ntfs_secure_load(): Failed to determine next security_id (error 5).

12/19/13 6:39:16 PM kernel NTFS-fs error (device /dev/disk0s3, pid 114): ntfs_mount(): Failed to load system files (error 5).

12/19/13 6:39:16 PM kernel NTFS-fs error (device /dev/disk0s3, pid 114): ntfs_mount(): Mount failed (error 5).

12/19/13 6:39:16 PM kernel NTFS volume name BOOTCAMP, version 3.1.

12/19/13 6:39:16 PM kernel NTFS-fs warning (device /dev/disk0s3, pid 123): ntfs_system_inodes_get(): $LogFile is not clean. Will not be able to remount read-write. Mount in Windows.

12/19/13 6:39:16 PM kernel NTFS-fs error (device /dev/disk0s3, pid 123): ntfs_next_security_id_init(): Index record with vcn 0xc is corrupt. $Secure is corrupt. Run chkdsk.

12/19/13 6:39:16 PM kernel NTFS-fs error (device /dev/disk0s3, pid 123): ntfs_secure_load(): Failed to determine next security_id (error 5).

12/19/13 6:39:16 PM kernel NTFS-fs error (device /dev/disk0s3, pid 123): ntfs_mount(): Failed to load system files (error 5).

12/19/13 6:39:16 PM kernel NTFS-fs error (device /dev/disk0s3, pid 123): ntfs_mount(): Mount failed (error 5).

12/19/13 6:39:16 PM SecurityAgent[117] Showing Login Window

12/19/13 6:39:18 PM warmd[34] [fetcher_open_file:936] open("/var/db/dyld/dyld_shared_cache_x86_64") => -1 (errno: 2)

12/19/13 6:39:18 PM warmd[34] [fetcher_open_file:936] open("/var/db/dyld/dyld_shared_cache_i386") => -1 (errno: 2)

12/19/13 6:43:12 PM /usr/libexec/hidd[46] Timeout waiting for IOKit to be quiet

12/19/13 6:47:12 PM WindowServer[67] Timeout waiting for IOKit to be quiet

12/19/13 7:18:00 PM SecurityAgent[117] User info context values set for XXXx

12/19/13 7:18:00 PM authorizationhost[109] Failed to authenticate user <XXXXX> (tDirStatus: -14090).

12/19/13 7:18:05 PM SecurityAgent[117] User info context values set for XXXXXX

12/19/13 7:18:05 PM SecurityAgent[117] Login Window Showing Progress

12/19/13 7:18:05 PM SecurityAgent[117] Login Window done

12/19/13 7:18:05 PM loginwindow[43] Login Window - Returned from Security Agent

12/19/13 7:18:05 PM loginwindow[43] USER_PROCESS: 43 console

12/19/13 7:18:06 PM com.apple.launchd.peruser.501[168] (com.apple.ReportCrash) Falling back to default Mach exception handler. Could not find: com.apple.ReportCrash.Self

12/19/13 7:18:14 PM com.apple.launchd.peruser.501[168] (com.apple.Kerberos.renew.plist[186]) Exited with exit code: 1

12/19/13 7:18:14 PM com.apple.launchd.peruser.501[168] (com.apple.mrt.uiagent[185]) Exited with exit code: 255

12/19/13 7:18:17 PM com.apple.launchd.peruser.501[168] (com.apple.CSConfigDotMacCert-XXXXX@me.com-SharedServices[191]) Exited with exit code: 1

12/19/13 7:23:41 PM [0x0-0x16016].com.apple.SystemProfiler[225] nvram: nvram is not supported on this system

12/19/13 7:28:14 PM /System/Library/CoreServices/CCacheServer.app/Contents/MacOS/CCacheServer[196] No valid tickets, timing out


<Edited by Host>

Jan 2, 2014 11:22 AM in response to Linc Davis

As per here:

https://discussions.apple.com/thread/5595139?answerId=23914632022#23914632022


Further digging found the "Error 35" in the Time machine log, so it was hanging.


And it is clearly Error +35, not -35.


The symptoms are exceeding long boot times and time machine hanging. I assume they are one and the same.


Once it is booted I see no other issues except for the time machine hang.


Ironically Bootcamp runs fine.

How to fix error 35: Unable to determine UUID

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