2010 iMac (Intel).

On power up - it chimes but does nothing else, it just stays at a white screen with no Apple logo. I have tried a PRAM reset and SMC reset. I can not boot to any other media in any way. Holding option, C, D, or any other key combonation (besides Cmd + opt + P +R or Shift + Ctrl + Option + Power) does nothing. If you could help me that would be great

Stating which OS X is installed helpss to determine troubleshooting suggestions. If you aren't sure, click the Apple menu icon  top left in your screen. From the drpo down menu click About This Mac. The OS X version is noted there.
Please reply with the OS X installed version.

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    Panics Since Last Report:          2
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    com.apple.driver.AppleUSBCardReader    3.1.0
    com.apple.driver.AppleFileSystemDriver    3.0.1
    com.apple.AppleFSCompression.AppleFSCompressionTypeDataless    1.0.0d1
    com.apple.AppleFSCompression.AppleFSCompressionTypeZlib    1.0.0d1
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    com.apple.iokit.SCSITaskUserClient    3.5.1
    com.apple.driver.XsanFilter    404
    com.apple.iokit.IOAHCIBlockStorage    2.2.2
    com.apple.driver.AppleUSBHub    5.2.5
    com.apple.driver.AppleFWOHCI    4.9.6
    com.apple.driver.AirPort.Atheros40    600.70.23
    com.apple.driver.AppleUSBEHCI    5.4.0
    com.apple.driver.AppleAHCIPort    2.4.1
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    com.apple.driver.AppleHPET    1.7
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    com.apple.driver.AppleACPIEC    1.6
    com.apple.driver.AppleAPIC    1.6
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    com.apple.driver.AppleUSBComposite    5.2.5
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    com.apple.iokit.IOFireWireFamily    4.5.5
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    com.apple.kext.AppleMatch    1.0.0d1
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    com.apple.driver.DiskImages    344
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  • My mid 2010 iMac is running very slow.

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    Problem description:
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    EtreCheck version: 2.1.5 (108)
    Report generated 1 January 2015 12:26:08 GMT
    Click the [Support] links for help with non-Apple products.
    Click the [Details] links for more information about that line.
    Click the [Adware] links for help removing adware.
    Hardware Information: ℹ️
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      iMac - model: iMac11,2
      1 3.2 GHz Intel Core i3 CPU: 2-core
      4 GB RAM Upgradeable
      BANK 0/DIMM0
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      BANK 1/DIMM0
      empty empty empty empty
      BANK 0/DIMM1
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      BANK 1/DIMM1
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      Wireless:  en1: 802.11 a/b/g/n
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      iMac 1920 x 1080
    System Software: ℹ️
      OS X 10.10.1 (14B25) - Uptime: 20:6:21
    Disk Information: ℹ️
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      Macintosh HD (disk1) / : 999.01 GB (661.46 GB free)
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      OPTIARC DVD RW AD-5680H
    USB Information: ℹ️
      TOSHIBA External USB 3.0 1 TB
      EFI (disk2s1) <not mounted> : 210 MB
      TOSHIBA EXT (disk2s2) /Volumes/TOSHIBA EXT : 999.86 GB (581.54 GB free)
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      Apple Inc. Bluetooth USB Host Controller
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      Flash Player  [Support]
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      Last backup: 2015-01-01 12:10:03 +0000
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          0% bzfilelist
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      813 MB Inactive RAM
      735 MB Wired RAM
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    Hi Lex
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    Report generated 3 January 2015 12:18:56 GMT
    Click the [Support] links for help with non-Apple products.
    Click the [Details] links for more information about that line.
    Click the [Adware] links for help removing adware.
    Hardware Information: ℹ️
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      1 3.2 GHz Intel Core i3 CPU: 2-core
      4 GB RAM Upgradeable
      BANK 0/DIMM0
      empty empty empty empty
      BANK 1/DIMM0
      empty empty empty empty
      BANK 0/DIMM1
      2 GB DDR3 1333 MHz ok
      BANK 1/DIMM1
      2 GB DDR3 1333 MHz ok
      Bluetooth: Old - Handoff/Airdrop2 not supported
      Wireless:  en1: 802.11 a/b/g/n
    Video Information: ℹ️
      ATI Radeon HD 5670 - VRAM: 512 MB
      iMac 1920 x 1080
    System Software: ℹ️
      OS X 10.10.1 (14B25) - Uptime: one day 21:51:10
    Disk Information: ℹ️
      WDC WD1001FALS-40Y6A0 disk0 : (1 TB)
      EFI (disk0s1) <not mounted> : 210 MB
      Recovery HD (disk0s3) <not mounted>  [Recovery]: 650 MB
      Macintosh HD (disk1) / : 999.01 GB (664.62 GB free)
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      Core Storage: disk0s2 999.35 GB Online
      OPTIARC DVD RW AD-5680H 
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      EFI (disk2s1) <not mounted> : 210 MB
      TOSHIBA EXT (disk2s2) /Volumes/TOSHIBA EXT : 999.86 GB (603.88 GB free)
      Apple Internal Memory Card Reader
      Apple Inc. BRCM2046 Hub
      Apple Inc. Bluetooth USB Host Controller
      Apple Inc. Built-in iSight
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      /System/Library/Extensions
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      [loaded] jp.co.toshiba.driver.ToExtCmd (1.0.2) [Support]
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    Problem System Launch Agents: ℹ️
      [running] jp.co.Toshiba.autorun.plist [Support]
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      [running] com.delicioussafari.DeliciousSafariAgent.plist [Support]
      [running] com.epson.epw.agent.plist [Support]
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    Internet Plug-ins: ℹ️
      Google Earth Web Plug-in: Version: 6.1 [Support]
      Default Browser: Version: 600 - SDK 10.10
      Flip4Mac WMV Plugin: Version: 2.3.8.1 [Support]
      AdobePDFViewerNPAPI: Version: 10.1.13 [Support]
      FlashPlayer-10.6: Version: 16.0.0.235 - SDK 10.6 [Support]
      Silverlight: Version: 5.1.30514.0 - SDK 10.6 [Support]
      Flash Player: Version: 16.0.0.235 - SDK 10.6 [Support]
      QuickTime Plugin: Version: 7.7.3
      iPhotoPhotocast: Version: 7.0 - SDK 10.8
      SharePointBrowserPlugin: Version: 14.4.7 - SDK 10.6 [Support]
      AdobePDFViewer: Version: 10.1.13 [Support]
      CouponPrinter-FireFox_v2: Version: 1.1.10 - SDK 10.6 [Support]
      EPPEX Plugin: Version: 10.0 [Support]
      JavaAppletPlugin: Version: Java 8 Update 25 Check version
    Safari Extensions: ℹ️
      wrc [Installed]
      iTube Studio [Installed]
    3rd Party Preference Panes: ℹ️
      Backblaze Backup  [Support]
      Flash Player  [Support]
      Flip4Mac WMV  [Support]
      Java  [Support]
      MacFUSE  [Support]
    Time Machine: ℹ️
      Skip System Files: NO
      Auto backup: YES
      Volumes being backed up:
      Macintosh HD: Disk size: 999.01 GB Disk used: 334.39 GB
      Destinations:
      TOSHIBA EXT [Local]
      Total size: 999.86 GB
      Total number of backups: 17
      Oldest backup: 2014-12-16 03:10:34 +0000
      Last backup: 2015-01-03 11:23:40 +0000
      Size of backup disk: Too small
      Backup size 999.86 GB < (Disk used 334.39 GB X 3)
    Top Processes by CPU: ℹ️
          8% backupd
          3% WindowServer
          0% mds
          0% fseventsd
          0% bzserv
    Top Processes by Memory: ℹ️
      228 MB Safari
      168 MB Mail
      101 MB com.apple.WebKit.WebContent
      69 MB Finder
      69 MB WindowServer
    Virtual Memory Information: ℹ️
      87 MB Free RAM
      1.18 GB Active RAM
      1.11 GB Inactive RAM
      737 MB Wired RAM
      54.29 GB Page-ins
      41 MB Page-outs
    Diagnostics Information: ℹ️
      Jan 2, 2015, 06:28:06 PM /Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_2015-01-02-182806_[ redacted].cpu_resource.diag [Details]
      Jan 1, 2015, 02:28:20 PM Self test - passed
      Jan 1, 2015, 01:31:20 PM /Library/Logs/DiagnosticReports/iTunes_2015-01-01-133120_[redacted].hang
      Jan 1, 2015, 01:16:02 PM /Library/Logs/DiagnosticReports/EtreCheck_2015-01-01-131602_[redacted].hang
      Jan 1, 2015, 12:19:02 PM /Library/Logs/DiagnosticReports/iPhoto_2015-01-01-121902_[redacted].hang
      Jan 1, 2015, 12:08:48 PM /Library/Logs/DiagnosticReports/AdobeReader_2015-01-01-120848_[redacted].hang
      Jan 1, 2015, 12:08:47 PM /Library/Logs/DiagnosticReports/Safari_2015-01-01-120847_[redacted].hang
      Dec 31, 2014, 03:43:36 PM /Users/[redacted]/Library/Logs/DiagnosticReports/fontd_2014-12-31-154336_[redac ted].crash
      Dec 31, 2014, 03:43:27 PM /Users/[redacted]/Library/Logs/DiagnosticReports/fontd_2014-12-31-154327_[redac ted].crash
      Dec 31, 2014, 03:43:22 PM /Users/[redacted]/Library/Logs/DiagnosticReports/fontd_2014-12-31-154322_[redac ted].crash
      Dec 31, 2014, 01:15:04 PM /Users/[redacted]/Library/Logs/DiagnosticReports/fontd_2014-12-31-131504_[redac ted].crash
      Dec 31, 2014, 01:15:02 PM /Users/[redacted]/Library/Logs/DiagnosticReports/fontd_2014-12-31-131502_[redac ted].crash
      Dec 31, 2014, 01:14:00 PM /Library/Logs/DiagnosticReports/WindowServer_2014-12-31-131400_[redacted].crash

  • My 2010 iMac with Mavericks 10.9.2 is very slow.  How do I fix?

    I have tried the usual stuff: disk permissions repair, SMC reset, PRAM reset, dragging caches to trash, restarting computer, etc.  My internet connection and speed is good.  Computer is mid-2010 i3 iMac with 10.9.2 OS, 12GB RAM, and there is plenty of unused space on my HDD. 
    The computer is very slow to start applications and load web pages.  I ran Etresoft as some have suggested and the report is below.  Any help is appreciated. Thanks.
    Hardware Information:
              iMac (21.5-inch, Mid 2010)
              iMac - model: iMac11,2
              1 3.06 GHz Intel Core i3 CPU: 2 cores
              12 GB RAM
    Video Information:
              ATI Radeon HD 4670 - VRAM: 256 MB
    System Software:
              OS X 10.9.2 (13C64) - Uptime: 0 days 0:6:34
    Disk Information:
              WDC WD5000AAKS-40V6A0 disk0 : (500.11 GB)
                        EFI (disk0s1) <not mounted>: 209.7 MB
                        Macintosh HD (disk0s2) / [Startup]: 499.25 GB (172.87 GB free)
                        Recovery HD (disk0s3) <not mounted>: 650 MB
              OPTIARC DVD RW AD-5680H 
    USB Information:
              Apple Internal Memory Card Reader
              Apple Inc. BRCM2046 Hub
                        Apple Inc. Bluetooth USB Host Controller
              Apple Inc. Built-in iSight
              Apple Computer, Inc. IR Receiver
    FireWire Information:
              Iomage HDD unknown_device 800mbit - 800mbit max
                        disk1s1 (disk1s1) <not mounted>: 32 KB
                        Time Machine (disk1s3) /Volumes/Time Machine: 1 TB (125.26 GB free)
    Thunderbolt Information:
    Startup Items:
              ParallelsDesktopTransporter: Path: /Library/StartupItems/ParallelsDesktopTransporter
              ParallelsTransporter: Path: /Library/StartupItems/ParallelsTransporter
    Launch Daemons:
              [System] com.adobe.fpsaud.plist 3rd-Party support link
              [System] com.cisco.anyconnect.vpnagentd.plist 3rd-Party support link
              [System] com.google.keystone.daemon.plist 3rd-Party support link
              [System] com.microsoft.office.licensing.helper.plist 3rd-Party support link
              [System] com.oracle.java.Helper-Tool.plist 3rd-Party support link
              [System] com.oracle.java.JavaUpdateHelper.plist 3rd-Party support link
    Launch Agents:
              [System] com.cisco.anyconnect.gui.plist 3rd-Party support link
              [System] com.google.keystone.agent.plist 3rd-Party support link
              [System] com.hp.messagecenter.launcher.plist 3rd-Party support link
              [System] com.oracle.java.Java-Updater.plist 3rd-Party support link
              [System] com.rosettastone.rosettastonedaemon.plist 3rd-Party support link
    User Launch Agents:
              [not loaded] com.adobe.ARM.[...].plist 3rd-Party support link
              [not loaded] net.optimum.iptv.optimumapp.agent.v3.plist 3rd-Party support link
    User Login Items:
              Microsoft Database Daemon
              Dropbox
    Internet Plug-ins:
              DirectorShockwave: Version: 12.0.4r144 - SDK 10.6 3rd-Party support link
              o1dbrowserplugin: Version: 5.1.7.17873 3rd-Party support link
              Google Earth Web Plug-in: Version: 6.1 3rd-Party support link
              Default Browser: Version: 537 - SDK 10.9
              Flip4Mac WMV Plugin: Version: 2.2.1.11  3rd-Party support link
              OfficeLiveBrowserPlugin: Version: 12.3.2 3rd-Party support link
              PandoWebInst: Version: 1.0 3rd-Party support link
              AdobePDFViewerNPAPI: Version: 11.0.06 - SDK 10.6 3rd-Party support link
              FlashPlayer-10.6: Version: 12.0.0.77 - SDK 10.6 3rd-Party support link
              Silverlight: Version: 5.1.20913.0 - SDK 10.6 3rd-Party support link
              Flash Player: Version: 12.0.0.77 - SDK 10.6 3rd-Party support link
              iPhotoPhotocast: Version: 7.0 - SDK 10.8
              CitrixICAClientPlugIn: Version: 11.2.0 3rd-Party support link
              googletalkbrowserplugin: Version: 5.1.7.17873 3rd-Party support link
              AdobePDFViewer: Version: 11.0.06 - SDK 10.6 3rd-Party support link
              npgtpo3dautoplugin: Version: 0.1.44.29 - SDK 10.5 3rd-Party support link
              QuickTime Plugin: Version: 7.7.3
              SharePointBrowserPlugin: Version: 14.3.9 - SDK 10.6 3rd-Party support link
              JavaAppletPlugin: Version: Java 7 Update 51 3rd-Party support link
    Safari Extensions:
              InvisibleHand: Version: 3.9.37
    Audio Plug-ins:
              BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
              AirPlay: Version: 2.0 - SDK 10.9
              AppleAVBAudio: Version: 203.2 - SDK 10.9
              iSightAudio: Version: 7.7.3 - SDK 10.9
    iTunes Plug-ins:
              Quartz Composer Visualizer: Version: 1.4 - SDK 10.9
    3rd Party Preference Panes:
              Citrix Online Plug-in  3rd-Party support link
              Flash Player  3rd-Party support link
              Flip4Mac WMV  3rd-Party support link
              Java  3rd-Party support link
              MacFUSE  3rd-Party support link
    Old Applications:
              /Applications/Microsoft Office 2011/Office
                        Microsoft Graph:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                        Microsoft Database Utility:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                        Microsoft Office Reminders:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                        Microsoft Upload Center:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                        My Day:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                        SyncServicesAgent:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                        Open XML for Excel:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                        Microsoft Alerts Daemon:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                        Microsoft Database Daemon:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                        Microsoft Chart Converter:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                        Microsoft Clip Gallery:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
              /Applications/Microsoft Office 2011
                        Microsoft PowerPoint:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                        Microsoft Excel:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                        Microsoft Outlook:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                        Microsoft Word:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                        Microsoft Document Connection:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
              Microsoft Language Register:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                        /Applications/Microsoft Office 2011/Additional Tools/Microsoft Language Register/Microsoft Language Register.app
              Solver:          Version: 1.0 - SDK 10.5 3rd-Party support link
                        /Applications/Microsoft Office 2011/Office/Add-Ins/Solver.app
              TurboTax Premier 2011:          Version: 2011.r17.007 - SDK 10.4 3rd-Party support link
              iSHS:          Version: 1.0 - SDK 10.0 3rd-Party support link
                        /Users/[redacted]/Downloads/iSHS.app
    Time Machine:
              Skip System Files: NO
              Auto backup: YES
              Volumes being backed up:
                        Macintosh HD: Disk size: 464.96 GB Disk used: 303.96 GB
              Destinations:
                        Iomega HDD [Local] (Last used)
                        Total size: 931.39 GB
                        Total number of backups: 147
                        Oldest backup: 2011-10-26 11:07:35 +0000
                        Last backup: 2014-03-12 00:53:28 +0000
                        Size of backup disk: Adequate
                                  Backup size 931.39 GB > (Disk used 303.96 GB X 3)
              Time Machine details may not be accurate.
              All volumes being backed up may not be listed.
    Top Processes by CPU:
                   9%          Google Chrome
                   6%          WindowServer
                   3%          mdworker32
                   2%          EtreCheck
                   1%          mds_stores
    Top Processes by Memory:
              135 MB          com.apple.IconServicesAgent
              123 MB          PluginProcess
              123 MB          Safari
              111 MB          com.apple.WebKit.WebContent
              98 MB          mds_stores
    Virtual Memory Information:
              9.28 GB          Free RAM
              1.66 GB          Active RAM
              303 MB          Inactive RAM
              783 MB          Wired RAM
              380 MB          Page-ins
              0 B          Page-outs

    Please read this whole message before doing anything.
    This procedure is a test, not a solution. Don’t be disappointed when you find that nothing has changed after you complete it.
    Step 1
    The purpose of this step is to determine whether the problem is localized to your user account.
    Enable guest logins* and log in as Guest. Don't use the Safari-only “Guest User” login created by “Find My Mac.”
    While logged in as Guest, you won’t have access to any of your personal files or settings. Applications will behave as if you were running them for the first time. Don’t be alarmed by this; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.
    Test while logged in as Guest. Same problem?
    After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.
    *Note: If you’ve activated “Find My Mac” or FileVault, then you can’t enable the Guest account. The “Guest User” login created by “Find My Mac” is not the same. Create a new account in which to test, and delete it, including its home folder, after testing.
    Step 2
    The purpose of this step is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
    Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you boot, and again when you log in.
    Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
    Safe mode is much slower to boot and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal boot may also be somewhat slow.
    The login screen appears even if you usually 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.
    Test while in safe mode. Same problem?
    After testing, reboot as usual (not in safe mode) and verify that you still have the problem. Post the results of Steps 1 and 2.

  • Time machine is not working on imac intel i7

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    Starting standard backup
    Backing up to: /Volumes/Backups/Backups.backupdb
    Ownership is disabled on the backup destination volume. Enabling.
    Backup content size: 237.9 GB excluded items size: 818.0 MB for volume Macintosh HD
    No pre-backup thinning needed: 284.58 GB requested (including padding), 930.57 GB available
    Waiting for index to be ready (101)
    Indexing a file failed. Returned 1 for: /System/Library/Frameworks/Python.framework/Versions/2.5/Extras/lib/python/wx-2 .8-mac-unicode/wx/lib/floatcanvas/Utilities/_init_.py, /Volumes/Backups/Backups.backupdb/van (5)/2010-08-17-184416.inProgress/75B311E0-7C50-4BD3-B7AD-03E3A1B883B2/Macintosh HD/System/Library/Frameworks/Python.framework/Versions/2.5/Extras/lib/python/wx -2.8-mac-unicode/wx/lib/floatcanvas/Utilities/_init_.py
    Aborting backup because indexing of file failed.
    Stopping backup.
    Copied 70375 files (17.4 GB) from volume Macintosh HD.
    Copy stage failed with error:11
    Backup failed with error: 11
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    I have changed the external hard drive twice so I doubt that is the problem. Please help

    Rajiv,
    I'd recommend going to the Time Machine forum for Snow Leopard. First start out reading the Troubleshooting FAQ at the top. The forum is located at:
    http://discussions.apple.com/forum.jspa?forumID=1342
    Regards,
    Roger

  • How do I install windows 7 to mid-2010 iMac?

    Have a 21.5" iMac with 10.6.8 OS, intel 3.2 GHz mid-2010 model with wireless keyboard and magic mouse.  Would like to install Windows 7 either boot camp or with Parallel 7, which ever works.  Any advice appreciated.  Step by step directions would be welcome.  Somewhat spooked by discussions I have read about black screens and loss of keyboard and mouse use.  

    I have the exact requirement of szl180: installing Windows 7 to a mid-2010 iMac. Only, I did successfully install it under VMWare (so I know the Windows disk is fine) and now want to install a Bootcamp version. Followed Bootcamp procedure only after installing everything and then rebooting Windows 7 shows the four-colored Windows logo and then dies - screen stays black, optical disk stop rotating, and nothing. Attempted to repair it using Windows 7 repair but it says nothing is wrong. Can't use System Restore because it never had an initial restore point. Starting from the DVD and reinstalling just brings me to the same point again though along the way Windows Installer notes that an old edition of Windows is on the drive and will be put into a windows.old file. What do I need to do to "breakthrough" and get the Windows desktop to display?

  • Can Adobe Premiere run on 2013 Mac Book Pro (thunderbolt port) and display on 2010 iMac (Mini DisplayPort) using TDM. TB cable   Opt. F2 didn't work. Will a Mini Display cable work?

    I need to work on Adobe Premiere on my 2013 Mac Book Pro (with thunderbolt port) and display it on my 2010 iMac (with Mini DisplayPort) using Target Display Mode (TDM). I tried using a thunderbolt cable plus Option F2, but it didn't work. Will a Mini Display cable work? Any other suggestions?
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    Mac Book Pro specs - 13 in. retina 2.6 GHz Intel Core i5 16GB 1600 Mhz DDR3

    2010 iMacs do not have Thunderbolt, they have mini-display ports. You are using the wrong connection, you need a mini display port to mini display port. Please read up on what Apple says in Target Display Mode: Frequently Asked Questions (FAQ)

  • IMac Intel partition login problem

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    2010-01-03 +0100
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    Unfortunately we are probably the only Mac in this desolate corner of North Germany where the inhabitants have always massively opted for Windows as they always go for the cheapest option. As far as I know we are the only Mac owners in a school of over 1500 people with 150 teachers. Had I been able to borrow a Mac, I would have linked it to ours long ago, got our data out and run DiskWarrior from the healthy Mac. The Hamburg techies are extremely expensive as they wrongly assume that anyone with a Mac must be eating off gold plate.
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  • Pixelation after upgrade to Yosemite - mid 2010 iMac 27in

    I have a mid-2010 iMac 27in with 16GB of RAM, 2.93GHz Intel Core i7, and an ATI Radeon HD 5750 1024MB display adapter.  I also have a second display attached which is a 27in LED Cinema Display.  I have never had a problem with either display with any of the previous versions of OS X.  I upgraded from Mavericks to Yosemite over the weekend and now have random pixelation.  Usually blotches of Magenta pixels, quite large in some cases.  Sometimes the color varies and may be like a lime green.  It doesn't show up on an open windows, just on the desktop background and it shows up on both screens, but not necessarily at the same time.
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    A client reported that this helped a lot:
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  • My 21.5 inch 2010 iMac won't stop crashing and rebooting when I put in my 8GB 1 piece Kingston RAMstick

    I have the 21.5 inch 2010 iMac and I bought this Kingston 8GB 1 piece Ramstick (http://www.amazon.com/Kingston-Technology-1333MHz-KTA-MB1333-8G/dp/B007TGZ4UY/re f=sr_1_7?ie=UTF8&qid=1401114006&sr=8-7&keywords=iMac+1333Mhz+RAM) and when I put it in my Mac, and I start up my Mac, it crashes and reboots itself. Then it happens over and over again. No matter what I do. Anyone have a solution?

    If it is Kingston ValueRAM, that product has been troublesome since Intel Macs were introduced in 2006.
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  • How to add a SSD to 2010 iMac with 1tb drive

    How to add a SSD to 2010 iMac with 1tb drive? I have a mid-2010 iMac with 1tb HD and would like to either replace the HD with SSD -or- add 256 or 400gb SSD to maybe the Optical Drive and use it as the boot drive. Is this possible with Model 11,2? i thought i\I'd read it was, but recently am reading my system is too old - OWC have SSD drives for newer models not Model 11,1 -or- 11,2

    Any SATA SSD will work, whatever you are reading is incorrect.
    You have 2 choices with this model-install the SSD in place of the HDD or the Superdrive.
    If you are installing in place of Superdrive you will need some form of SSD Caddy-these can be found on the cheap at places like eBay, also OWC sell one called the DataDoubler.
    Guide:https://www.ifixit.com/Guide/Installing+iMac+Intel+21.5-Inch+EMC+2389+Dual+Hard+ Drive/8643
    If installing in place of old HDD you will notice that the propietary Temperature Sensor will not fit on the new drive, you will need to replace this with a sensor such as this or this
    You will also need a 3.5inch to 2.5inch drive adaptor such as this
    Guide: https://www.ifixit.com/Guide/iMac+Intel+21.5-Inch+EMC+2389+Hard+Drive+Replacemen t/6284
    If you still have doubts contact OWC as mentioned above, I would start deciding whether your Superdive is needed or if you want to swap out the HDD.
    Hope this points you in the right direction

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