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  1. #1


    Member Since
    Feb 06, 2012
    Posts
    7
    Question Disc Arbitration
    Can anyone help me to understand exactly what disc arbitration does or how it works? I have lost my recovery partition twice now, have no idea how. Disc arbitration was listed on my Mac book pro system logs, lion op system, and someone said the using disc arbitration could hide the recovery partitions. Any info would be greatly appreciated.

  2. #2


    Member Since
    Jan 22, 2010
    Location
    Victoria, BC
    Posts
    20,911
    Specs:
    Mid-2012 MBP (16GB, 1TB HD), Monoprice 24-inch second monitor, iPhone 5s 32GB, iPad Air 2 64GB
    Well, let's start with this: what third-party disk utilities, or partitions, or Windows VM environments are currently set up on your machine?

  3. #3


    Member Since
    Feb 06, 2012
    Posts
    7
    How would I check to tell you? Thanks for ur help!

  4. #4


    Member Since
    Jan 22, 2010
    Location
    Victoria, BC
    Posts
    20,911
    Specs:
    Mid-2012 MBP (16GB, 1TB HD), Monoprice 24-inch second monitor, iPhone 5s 32GB, iPad Air 2 64GB
    Surely you'd know this?

    As for your original question, "disk arbitration" has to do with auto-mounting other disks (like when you plug in an external disk and after a moment it shows up on the desktop -- that's disk arbitration). There's someone else in one of the other sub-formums (switcher's, I think) having the same issue ... or maybe that's you?

  5. #5


    Member Since
    Feb 06, 2012
    Posts
    7
    No, sadly I don't know because I shouldn't have any of those installed or plugged in or however they attach on my computer. I only use the web, no downloads except for pages which I use all the time for school.

    I am curious about Windows VM environments though.

    And your reply makes perfect sense!! Thanks.. Its just like an external disc is storing all my data on it therefore my recovery partition isn't visible since its being over road by this new disc ..... this is what my computer says,

    Hitachi HTS5450B9A302 Media

    Verifying partition map for “Hitachi HTS545050B9A302 Media”
    Checking prerequisites
    Checking the partition list
    Checking for an EFI system partition
    Checking the EFI system partition’s size
    Checking the EFI system partition’s file system
    Checking all HFS data partition loader spaces
    Checking Core Storage Physical Volume partitions
    Checking storage system
    Checking volume.
    disk0s2: Scan for Volume Headers
    disk0s2: Scan for Disk Labels
    Logical Volume Group 460F1631-38BF-47E5-BF5A-2DEAFC9B556E spans 1 device
    Logical Volume Group has a 16 MB Metadata Volume with double redundancy
    Start scanning metadata for a valid checkpoint
    Load and verify Segment Headers
    Load and verify Checkpoint Payload
    Load and verify Transaction Segment
    Incorporate 0 newer non-checkpoint transactions
    Load and verify Virtual Address Table
    Load and verify Segment Usage Table
    Load and verify Metadata Superblock
    Load and verify Logical Volumes B-Trees
    Logical Volume Group contains 1 Logical Volumes
    Load and verify 96C0CD19-B8F9-4F6B-8103-948A88C52893
    Load and verify 33D7DDFE-B7A5-4EB8-9C3A-9D81AE3EEE02
    Load and verify Freespace Summary
    Load and verify Block Accounting
    Load and verify Segment Cleaning
    Newest transaction commit checkpoint is valid
    The volume 460F1631-38BF-47E5-BF5A-2DEAFC9B556E appears to be OK.
    The partition map appears to be OK

    Verifying partition map for “Hitachi HTS545050B9A302 Media”
    Checking prerequisites
    Checking the partition list
    Checking for an EFI system partition
    Checking the EFI system partition’s size
    Checking the EFI system partition’s file system
    Checking all HFS data partition loader spaces
    Checking Core Storage Physical Volume partitions
    Checking storage system
    Checking volume.
    disk0s2: Scan for Volume Headers
    disk0s2: Scan for Disk Labels
    Logical Volume Group 460F1631-38BF-47E5-BF5A-2DEAFC9B556E spans 1 device
    Logical Volume Group has a 16 MB Metadata Volume with double redundancy
    Start scanning metadata for a valid checkpoint
    Load and verify Segment Headers
    Load and verify Checkpoint Payload
    Load and verify Transaction Segment
    Incorporate 0 newer non-checkpoint transactions
    Load and verify Virtual Address Table
    Load and verify Segment Usage Table
    Load and verify Metadata Superblock
    Load and verify Logical Volumes B-Trees
    Logical Volume Group contains 1 Logical Volumes
    Load and verify 96C0CD19-B8F9-4F6B-8103-948A88C52893
    Load and verify 33D7DDFE-B7A5-4EB8-9C3A-9D81AE3EEE02
    Load and verify Freespace Summary
    Load and verify Block Accounting
    Load and verify Segment Cleaning
    Newest transaction commit checkpoint is valid
    The volume 460F1631-38BF-47E5-BF5A-2DEAFC9B556E appears to be OK.
    The partition map appears to be OK

    Verifying partition map for “Hitachi HTS545050B9A302 Media”
    Checking prerequisites
    Checking the partition list
    Checking for an EFI system partition
    Checking the EFI system partition’s size
    Checking the EFI system partition’s file system
    Checking all HFS data partition loader spaces
    Checking Core Storage Physical Volume partitions
    Checking storage system
    Checking volume.
    disk0s2: Scan for Volume Headers
    disk0s2: Scan for Disk Labels
    Logical Volume Group 460F1631-38BF-47E5-BF5A-2DEAFC9B556E spans 1 device
    Logical Volume Group has a 16 MB Metadata Volume with double redundancy
    Start scanning metadata for a valid checkpoint
    Load and verify Segment Headers
    Load and verify Checkpoint Payload
    Load and verify Transaction Segment
    Incorporate 0 newer non-checkpoint transactions
    Load and verify Virtual Address Table
    Load and verify Segment Usage Table
    Load and verify Metadata Superblock
    Load and verify Logical Volumes B-Trees
    Logical Volume Group contains 1 Logical Volumes
    Load and verify 96C0CD19-B8F9-4F6B-8103-948A88C52893
    Load and verify 33D7DDFE-B7A5-4EB8-9C3A-9D81AE3EEE02
    Load and verify Freespace Summary
    Load and verify Block Accounting
    Load and verify Segment Cleaning
    Newest transaction commit checkpoint is valid
    The volume 460F1631-38BF-47E5-BF5A-2DEAFC9B556E appears to be OK.
    The partition map appears to be OK

    Verifying volume “Macintosh HD”
    Checking storage systemChecking volume.
    disk0s2: Scan for Volume Headers
    disk0s2: Scan for Disk Labels
    Logical Volume Group 460F1631-38BF-47E5-BF5A-2DEAFC9B556E spans 1 device
    Logical Volume Group has a 16 MB Metadata Volume with double redundancy
    Start scanning metadata for a valid checkpoint
    Load and verify Segment Headers
    Load and verify Checkpoint Payload
    Load and verify Transaction Segment
    Incorporate 0 newer non-checkpoint transactions
    Load and verify Virtual Address Table
    Load and verify Segment Usage Table
    Load and verify Metadata Superblock
    Load and verify Logical Volumes B-Trees
    Logical Volume Group contains 1 Logical Volumes
    Load and verify 96C0CD19-B8F9-4F6B-8103-948A88C52893
    Load and verify 33D7DDFE-B7A5-4EB8-9C3A-9D81AE3EEE02
    Load and verify Freespace Summary
    Load and verify Block Accounting
    Load and verify Segment Cleaning
    Newest transaction commit checkpoint is valid
    The volume 460F1631-38BF-47E5-BF5A-2DEAFC9B556E appears to be OK.
    Checking file systemPerforming live verification.
    Checking Journaled HFS Plus volume.
    Checking extents overflow file.
    Checking catalog file.
    Checking multi-linked files.
    Checking catalog hierarchy.
    Checking extended attributes file.
    Checking volume bitmap.
    Checking volume information.
    The volume Macintosh HD appears to be OK.

    Verifying permissions for “Macintosh HD”
    Permissions differ on “usr/share/devicemgr/frontend/admin/zh_TW.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/zh_CN.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/ko.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/nl.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/it.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/es.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/fr.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/de.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/ja.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Group differs on “Library/Preferences/com.apple.alf.plist”; should be 80; group is 0.
    Permissions differ on “System/Library/User Template/cs.lproj/Pictures/iChat Icons”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “System/Library/User Template/hu.lproj/Pictures/iChat Icons”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “System/Library/User Template/tr.lproj/Pictures/iChat Icons”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    User differs on “private/etc/hosts”; should be 0; user is 501.

    Permissions verification complete

    Verifying volume “Macintosh HD”
    Checking storage systemChecking volume.
    disk0s2: Scan for Volume Headers
    disk0s2: Scan for Disk Labels
    Logical Volume Group 460F1631-38BF-47E5-BF5A-2DEAFC9B556E spans 1 device
    Logical Volume Group has a 16 MB Metadata Volume with double redundancy
    Start scanning metadata for a valid checkpoint
    Load and verify Segment Headers
    Load and verify Checkpoint Payload
    Load and verify Transaction Segment
    Incorporate 0 newer non-checkpoint transactions
    Load and verify Virtual Address Table
    Load and verify Segment Usage Table
    Load and verify Metadata Superblock
    Load and verify Logical Volumes B-Trees
    Logical Volume Group contains 1 Logical Volumes
    Load and verify 96C0CD19-B8F9-4F6B-8103-948A88C52893
    Load and verify 33D7DDFE-B7A5-4EB8-9C3A-9D81AE3EEE02
    Load and verify Freespace Summary
    Load and verify Block Accounting
    Load and verify Segment Cleaning
    Newest transaction commit checkpoint is valid
    The volume 460F1631-38BF-47E5-BF5A-2DEAFC9B556E appears to be OK.
    Checking file systemPerforming live verification.
    Checking Journaled HFS Plus volume.
    Checking extents overflow file.
    Checking catalog file.
    Checking multi-linked files.
    Checking catalog hierarchy.
    Checking extended attributes file.
    Checking volume bitmap.
    Checking volume information.
    The volume Macintosh HD appears to be OK.

    Verifying permissions for “Macintosh HD”
    Permissions differ on “usr/share/devicemgr/frontend/admin/zh_TW.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/zh_CN.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/ko.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/nl.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/it.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/es.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/fr.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/de.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/ja.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Group differs on “Library/Preferences/com.apple.alf.plist”; should be 80; group is 0.
    Permissions differ on “System/Library/User Template/cs.lproj/Pictures/iChat Icons”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “System/Library/User Template/hu.lproj/Pictures/iChat Icons”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “System/Library/User Template/tr.lproj/Pictures/iChat Icons”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    User differs on “private/etc/hosts”; should be 0; user is 501.

    Permissions verification complete


    Name : SuperDrive
    Type : Optical Device

    Device Name : MAT****A DVD-R UJ-8A8
    Connection Bus : ATAPI
    Connection Type : Internal
    Burn Support : Apple Shipping
    Writes CD : Yes
    Writes DVD : Yes
    Media is present : No
    Capabilities : Open System Information

    Name : Macintosh HD
    Type : Encrypted Logical Partition

    Disk Identifier : disk1
    Mount Point : /
    Disk Status : Online
    System Name : Mac OS X
    System Version : 10.7.2
    System Build : 11C74
    System Copyright : 1983-2011 Apple Inc.
    File System : Mac OS Extended (Journaled, Encrypted)
    Connection Bus : SATA
    Device Tree : IODeviceTree:/PCI0@0/SATA@1F,2/PRT0@0/PMP@0
    Writable : Yes
    Universal Unique Identifier : 159E8B62-3D59-3D6E-B2E8-42E8BC7AE89E
    Capacity : 498.93 GB (498,929,332,224 Bytes)
    Free Space : 486.17 GB (486,171,025,408 Bytes)
    Used : 12.76 GB (12,758,306,816 Bytes)
    Number of Files : 289,454
    Number of Folders : 76,777
    Owners Enabled : Yes
    Can Turn Owners Off : Yes
    Can Repair Permissions : Yes
    Can Be Verified : Yes
    Can Be Repaired : Yes
    Can Be Formatted : Yes
    Bootable : Yes
    Supports Journaling : Yes
    Journaled : Yes
    Disk Number : 1
    Partition Number : 0

    Verifying volume “Macintosh HD”
    Checking storage systemChecking volume.
    disk0s2: Scan for Volume Headers
    disk0s2: Scan for Disk Labels
    Logical Volume Group 460F1631-38BF-47E5-BF5A-2DEAFC9B556E spans 1 device
    Logical Volume Group has a 16 MB Metadata Volume with double redundancy
    Start scanning metadata for a valid checkpoint
    Load and verify Segment Headers
    Load and verify Checkpoint Payload
    Load and verify Transaction Segment
    Incorporate 0 newer non-checkpoint transactions
    Load and verify Virtual Address Table
    Load and verify Segment Usage Table
    Load and verify Metadata Superblock
    Load and verify Logical Volumes B-Trees
    Logical Volume Group contains 1 Logical Volumes
    Load and verify 96C0CD19-B8F9-4F6B-8103-948A88C52893
    Load and verify 33D7DDFE-B7A5-4EB8-9C3A-9D81AE3EEE02
    Load and verify Freespace Summary
    Load and verify Block Accounting
    Load and verify Segment Cleaning
    Newest transaction commit checkpoint is valid
    The volume 460F1631-38BF-47E5-BF5A-2DEAFC9B556E appears to be OK.
    Checking file systemPerforming live verification.
    Checking Journaled HFS Plus volume.
    Checking extents overflow file.
    Checking catalog file.
    Checking multi-linked files.
    Checking catalog hierarchy.
    Checking extended attributes file.
    Checking volume bitmap.
    Checking volume information.
    The volume Macintosh HD appears to be OK.

    Verifying permissions for “Macintosh HD”
    Permissions differ on “usr/share/devicemgr/frontend/admin/zh_TW.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/zh_CN.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/ko.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/nl.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/it.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/es.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/fr.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/de.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “usr/share/devicemgr/frontend/admin/ja.lproj/app/javascript.js”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Group differs on “Library/Preferences/com.apple.alf.plist”; should be 80; group is 0.
    Permissions differ on “System/Library/User Template/cs.lproj/Pictures/iChat Icons”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “System/Library/User Template/hu.lproj/Pictures/iChat Icons”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    Permissions differ on “System/Library/User Template/tr.lproj/Pictures/iChat Icons”; should be lrwxrwxrwx ; they are lrwxr-xr-x .
    User differs on “private/etc/hosts”; should be 0; user is 501.

    Permissions verification complete


    sorry for so much but this looked important too...

    Extensions:

    Extensions:
    Path: /System/Library/Extensions/AppleMobileDevice.kext
    Version: 3.3.0
    Path: /System/Library/Extensions/AppleStorageDrivers.kext/Contents/PlugIns/AppleATAPIStorage.kext
    Version: 3.0.1
    Path: /System/Library/Extensions/AppleStorageDrivers.kext/Contents/PlugIns/AppleXserveRAID.kext
    Version: 3.0.1
    Path: /System/Library/Extensions/AppleStorageDrivers.kext/Contents/PlugIns/FireWireStorageDeviceSpecifics.kext
    Version: 3.0.1
    Path: /System/Library/Extensions/AppleStorageDrivers.kext/Contents/PlugIns/SonyXDCAMDriver.kext
    Version: 3.0.1
    Path: /System/Library/Extensions/AppleStorageDrivers.kext/Contents/PlugIns/USBStorageDeviceSpecifics.kext
    Version: 3.0.1
    Path: /System/Library/Extensions/AppleUSBTopCase.kext
    Version: 225.2
    Path: /System/Library/Extensions/BJUSBLoad.kext
    Version: 2.0.13
    Path: /System/Library/Extensions/CellPhoneHelper.kext
    Version: 1.2.4
    Path: /System/Library/Extensions/EPSONUSBPrintClass.kext
    Version: 1.4.9
    Path: /System/Library/Extensions/hp_fax_io.kext
    Version: 5.2.0
    Path: /System/Library/Extensions/hp_Photosmart_io_enabler.kext
    Version: 4.3.1
    Path: /System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDEventDriver.kext
    Version: 1.7.1
    Path: /System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDEventDriverSafeBoot.kext
    Version: 1.7.1
    Path: /System/Library/Extensions/IOHIDFamily.kext/Contents/PlugIns/IOHIDUserClient.kext
    Version: 1.7.1
    Path: /System/Library/Extensions/IOStreamFamily.kext/Contents/PlugIns/IOStreamUserClient.kext
    Version: 1.1.0
    Path: /System/Library/Extensions/IOUSBFamily.kext/Contents/PlugIns/IOUSBHIDDriverSafeBoot.kext
    Version: 4.4.5
    Path: /System/Library/Extensions/IOVideoFamily.kext/Contents/PlugIns/IOVideoDeviceUserClient.kext
    Version: 1.2.0

    You are helping more than you could possibly know...thank you for helping me!!

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