794
Panic Kernel at Start
Since installing Mac Sierra 10.12.4, the very next day and at nearly every daily startup since (95% of the time) I initially get a panic kernel screen immediately. I force a shutdown and restart the Mac and I proceed to a normal load and startup. The Panic Kernel only occurs at startup after the mac has been sitting and never on the second startup attempt immediately following the failed startup. On the same day I installed macOS 10.12.4, I also installed Xcode 8.3.2. I can use the two step startup workaround as I usually only start the mac once a day but it is getting irritating. I did disconnect all USB devices and the problem persisted. Is there a smoking gun out there associated with macOS 10.12.4 or Xcode 8.3.2 causing these startup panic kernels?
EtreCheck version: 3.2.4 (365)
Report generated 2017-05-13 07:38:02
Download EtreCheck from https://etrecheck.com
Runtime: 2:11
Performance: Excellent
Click the [Lookup] links for more information from Apple Support Communities.
Click the [Details] links for more information about that line.
Problem: Other problem
Description:
Panic Kernel at startup
iMac (27-inch, Late 2012)
[Technical Specifications] - [User Guide] - [Warranty & Service]
iMac - model: iMac13,2
1 3.4 GHz Intel Core i7 (i7-3770) CPU: 4-core
16 GB RAM Upgradeable - [Instructions]
BANK 0/DIMM0
4 GB DDR3 1600 MHz ok
BANK 1/DIMM0
4 GB DDR3 1600 MHz ok
BANK 0/DIMM1
4 GB DDR3 1600 MHz ok
BANK 1/DIMM1
4 GB DDR3 1600 MHz ok
Bluetooth: Good - Handoff/Airdrop2 supported
Wireless: en1: 802.11 a/b/g/n
NVIDIA GeForce GTX 675MX - VRAM: 1024 MB
iMac 2560 x 1440
macOS Sierra 10.12.4 (16E195) - Time since boot: about 2 hours
APPLE HDD ST3000DM001 disk1 : (3 TB) (Rotational)
EFI (disk1s1) <not mounted> : 210 MB
Recovery HD (disk1s3) <not mounted> [Recovery]: 650 MB
Macintosh HD (disk2) / [Startup]: 3.11 TB (975.49 GB free)
Core Storage: disk0s2 120.99 GB Online
Core Storage: disk1s2 3.00 TB Online
APPLE SSD SM128E disk0 : (121.33 GB) (Solid State - TRIM: Yes)
EFI (disk0s1) <not mounted> : 210 MB
Boot OS X (disk0s3) <not mounted> : 134 MB
Macintosh HD (disk2) / [Startup]: 3.11 TB (975.49 GB free)
Core Storage: disk0s2 120.99 GB Online
Core Storage: disk1s2 3.00 TB Online
Apple Inc. FaceTime HD Camera (Built-in)
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. thunderbolt_bus
Mac App Store and identified developers
/Library/Application Support/Citrix Receiver
[not loaded] com.citrix.kext.gusb (12.3.0 - SDK 10.9 - 2016-09-23) [Lookup]
/Library/Extensions
[loaded] com.symantec.SymXIPS (8.1 - SDK 10.10 - 2017-04-29) [Lookup]
[loaded] com.symantec.internetSecurity.kext (6.6.1 - SDK 10.11 - 2017-04-29) [Lookup]
[loaded] com.symantec.ips.kext (6.6.1 - SDK 10.11 - 2017-04-29) [Lookup]
[loaded] com.symantec.nfm.kext (6.6.1 - SDK 10.11 - 2017-04-29) [Lookup]
/System/Library/Extensions
[not loaded] com.wacom.kext.wacomtablet (Wacom Tablet 6.3.4-3 - SDK 10.8 - 2017-04-29) [Lookup]
[not loaded] 6 Apple tasks
[loaded] 167 Apple tasks
[running] 108 Apple tasks
[killed] One Apple task
one process killed due to insufficient RAM
[not loaded] 40 Apple tasks
[loaded] 174 Apple tasks
[running] 104 Apple tasks
[killed] 2 Apple tasks
2 processes killed due to insufficient RAM
[not loaded] com.adobe.AAM.Updater-1.0.plist ✔︎ (2015-02-22) [Lookup]
[failed] com.adobe.ARMDCHelper.cc24aef4a1b90ed56a725c38014c95072f92651fb65e1bf9c8e43c37a2 3d420d.plist ✔︎ (2017-01-13) [Lookup]
[running] com.citrix.AuthManager_Mac.plist (2016-09-23) [Lookup]
[running] com.citrix.ReceiverHelper.plist (2016-09-23) [Lookup]
[running] com.citrix.ServiceRecords.plist (2016-09-23) [Lookup]
[loaded] com.google.keystone.agent.plist ✔︎ (2017-03-28) [Lookup]
[running] com.hp.StatusMonitor.plist ✔︎ (2014-06-26) [Lookup]
[loaded] com.oracle.java.Java-Updater.plist (2016-02-11) [Lookup]
[loaded] com.symantec.errorreporter-periodicagent.NFM.plist ✔︎ (2017-04-29) [Lookup]
[running] com.symantec.uiagent.application.NFM.plist (2017-04-29) [Lookup]
[running] com.wacom.wacomtablet.plist ✔︎ (2012-09-21) [Lookup]
[loaded] com.adobe.ARMDC.Communicator.plist ✔︎ (2017-01-13) [Lookup]
[loaded] com.adobe.ARMDC.SMJobBlessHelper.plist ✔︎ (2017-01-13) [Lookup]
[loaded] com.adobe.SwitchBoard.plist (2012-12-18) [Lookup]
[loaded] com.adobe.fpsaud.plist (2017-04-26) [Lookup]
[loaded] com.citrix.ctxusbd.plist (2016-09-15) [Lookup]
[loaded] com.google.keystone.daemon.plist ✔︎ (2017-04-17) [Lookup]
[loaded] com.microsoft.autoupdate.helper.plist ✔︎ (2017-05-06) [Lookup]
[loaded] com.microsoft.office.licensingV2.helper.plist ✔︎ (2016-02-12) [Lookup]
[loaded] com.oracle.JavaInstallHelper.plist ✔︎ (2016-04-26) [Lookup]
[loaded] com.oracle.java.Helper-Tool.plist § (2016-01-29) [Lookup]
[loaded] com.symantec.SymLUHelper.NFM.plist ✔︎ (2017-04-21) [Lookup]
[loaded] com.symantec.UninstallerToolHelper.plist (2016-05-24) [Lookup]
[running] com.symantec.deepsight-extractor.NFM.plist ✔︎ (2017-04-21) [Lookup]
[loaded] com.symantec.errorreporter-periodic.NFM.plist ✔︎ (2017-04-29) [Lookup]
[loaded] com.symantec.liveupdate.daemon.NFM.plist ✔︎ (2017-04-21) [Lookup]
[running] com.symantec.nfm.wps.plist ✔︎ (2017-04-21) [Lookup]
[running] com.symantec.sharedsettings.NFM.plist ✔︎ (2017-04-21) [Lookup]
[running] com.symantec.symdaemon.NFM.plist (2017-04-21) [Lookup]
[loaded] com.adobe.AAM.Updater-1.0.plist ✔︎ (2012-12-18) [Lookup]
[running] com.akamai.single-user-client.plist (2017-01-23) [Lookup]
[running] com.amazon.music.plist (2015-01-07) [Lookup]
[loaded] com.citrixonline.GoToMeeting.G2MUpdate.plist ✔︎ (2015-09-06) [Lookup]
[loaded] com.dropbox.DropboxMacUpdate.agent.plist ✔︎ (2017-05-02) [Lookup]
iTunesHelper Application (2017-03-25)
(/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Garmin Express Service Application (2013-12-17)
(/Applications/Garmin Express.app/Contents/Library/LoginItems/Garmin Express Service.app)
SpeechSynthesisServer Application
(/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks /SpeechSynthesis.framework/Versions/A/SpeechSynthesisServer.app)
Google Drive Application
(/Applications/Google Drive.app)
Memory Clean Application
(~/.Trash/Memory Clean.app)
Safari Application - Hidden
(/Applications/Safari.app)
Mail Application - Hidden
(/Applications/Mail.app)
AdobeResourceSynchronizer Application - Hidden
(/Applications/Adobe Acrobat Reader DC.app/Contents/Helpers/AdobeResourceSynchronizer.app)
Dropbox Application
(/Applications/Dropbox.app)
hpStatusAlert Application
(/Library/Printers/hp/Utilities/HP Printer Monitor.app/Contents/Resources/hpStatusAlert.app)
o1dbrowserplugin: 5.41.3.0 - SDK 10.8 (2015-12-16) [Lookup]
WacomNetscape: 2.1.0-1 - SDK 10.8 (2012-09-21) [Lookup]
AdobeExManDetect: AdobeExManDetect 1.1.0.0 - SDK 10.7 (2013-12-28) [Lookup]
WacomTabletPlugin: WacomTabletPlugin 2.1.0.2 (2012-09-21) [Lookup]
AdobePDFViewerNPAPI: 17.009.20044 - SDK 10.11 (2017-04-14) [Lookup]
FlashPlayer-10.6: 25.0.0.171 - SDK 10.9 (2017-05-11) [Lookup]
Silverlight: 5.1.41212.0 - SDK 10.6 (2016-01-14) [Lookup]
QuickTime Plugin: 7.7.3 (2017-04-08)
Flash Player: 25.0.0.171 - SDK 10.9 (2017-05-11) [Lookup]
CitrixICAClientPlugIn: 12.3.0 - SDK 10.11 (2016-09-23) [Lookup]
googletalkbrowserplugin: 5.41.3.0 - SDK 10.8 (2015-12-11) [Lookup]
AdobePDFViewer: 17.009.20044 - SDK 10.11 (2017-04-14) [Lookup]
GarminGpsControl: 4.0.4.0 Release - SDK 10.6 (2012-11-02) [Lookup]
Mathematica: 9.0.1.4092152 (2014-02-23) [Lookup]
RL Secure Plug-In Layer: Unknown - SDK 10.5 (2015-09-02) [Lookup]
JavaAppletPlugin: Java 8 Update 73 build 02 (2016-02-11) Check version
UploadManager: Unknown - SDK 10.5 (2015-09-02) [Lookup]
CitrixOnlineWebDeploymentPlugin: 1.0.105 (2013-04-25) [Lookup]
Picasa: 1.0 - SDK 10.6 (2015-07-10) [Lookup]
Google Earth Web Plug-in: 7.0 (2012-12-14) [Lookup]
ContentManager: Unknown - SDK 10.5 (2015-09-02) [Lookup]
RocketEngine: Unknown - SDK 10.5 (2015-09-02) [Lookup]
Facebook Cleaner - Sonny Fazio - https://sonstermedia.com (2015-04-10)
Ka-Block! - David Graham & Josh Peek - https://kablock.com (2017-02-03)
Facebook Disconnect - Disconnect - https://disconnect.me/facebook (2015-04-10)
Awesome Screenshot - Diigo - https://www.diigo.com/ (2015-09-18)
Norton Security - Symantec Corporation - https://www.norton.com/mac (2017-05-09)
Pin It Button - Pinterest, Inc. - https://www.pinterest.com/ (2017-02-03)
Akamai NetSession Preferences (2017-01-23) [Lookup]
Flash Player (2017-04-26) [Lookup]
Java (2016-02-11) [Lookup]
Time Machine not configured!
6% kernel_task
3% com.hp.devicemonitor
2% fontd
2% WindowServer
2% Google Chrome Helper(5)
1.39 GB com.apple.WebKit.WebContent(5)
1.30 GB kernel_task
819 MB Google Chrome Helper(5)
475 MB SymDaemon
279 MB Safari
8.04 GB Available RAM
5.83 GB Free RAM
7.96 GB Used RAM
2.20 GB Cached files
12 MB Swap Used
2017-05-13 05:43:21 /Library/Logs/DiagnosticReports/SymDaemon_2017-05-13-054321_[redacted].cpu_reso urce.diag [Details]
/Library/Application Support/Symantec/*/SymDaemon.bundle/Contents/MacOS/SymDaemon
2017-05-13 05:06:05 Self test - passed
2017-05-11 20:10:24 /Library/Logs/DiagnosticReports/SymDaemon_2017-05-11-201024_[redacted].cpu_reso urce.diag [Details]
2017-05-10 21:18:53 /Library/Logs/DiagnosticReports/SymDaemon_2017-05-10-211853_[redacted].cpu_reso urce.diag [Details]
anthonyfromspencerville wrote:
The disk0 report has invalid characters that generate an error message every time I try to post a reply. But there were no error messages in the text that I could see.
You should be able to use <https://pastebin.com/> and put a pointer in here if you want to post that SMART report.
With respect to 3TB Seagate drive
1 Raw_Read_Error_Rate 0x000f 117 093 006 Pre-fail Always - 152779320
7 Seek_Error_Rate 0x000f 087 060 030 Pre-fail Always - 4805630705
9 Power_On_Hours 0x0032 077 077 000 Old_age Always - 20533
Or about 7,000 read errors per hour.
Since you Mac has not rolled over and died, the disk drive is fixing those errors using either ECC (Error Correcting Codes) or retires.
The Seek errors generally mean it took more than one try position the disk's read head over the correct track. That is more on the order of 200,000 seek errors per hour. That might be affecting your performance when using that drive.
Is your iMac setup with a Fusion Drive configuration, or has the Fusion configuration been removed, and they are now just 2 separate storage devices? And if so, which is the boot device?
Generally in a Fusion configuration, the SSD is where the writes initially go (then get slowly migrated to the rotating disk), and more frequently used files are kept on the SSD, including the boot files so the Mac boots faster.
If you do not find the root cause of your kernel panics, you might want to consider making a Genius Bar appointment at your local Apple store and have them evaluation your system, especially looking at your disks.
Uninstall Symantec and Memory Clean as per developer's instructions. No anti-virus or cleaning apps are necessary or recommended on Mac OS. Symantec has been crippling Mac systems for decades. (Just dragging to Trash is not uninstalling)
While the anti-virus is the most likely candidate, it might be useful to post a few of the kernel panic reports
Kernel Panic reports: Finder -> Go -> Go to Folder -> /Library/Logs/DiagnosticReports
<https://support.apple.com/kb/ht2546>
<https://support.apple.com/en-us/HT200553>
The panic report should have "panic" in the file name.
I did try both options but it did not correct the problem. I surmised that it may be the hard drive. When I do a cold start the problem always occur. When I turn off the Mac and then turn it back on before the hard drive spins down, it starts normally. I have experimented turning the computer on but before panic kernel message occurs, I turn of the computer and then turn back on in quick succession to start normally. So it may be the boot sector of the hard drive has a problem or something that happened to the boot sector during the install of Mac OS 10.12.4 on 4/8/17. Not sure where this leaves me except possibly replacing the hard drive.
I surmised that it may be the hard drive.
If you suspect the boot disk, then you could run EtreCheck again and collect the S.M.A.R.T. data
APPLE HDD ST3000DM001 disk1 : (3 TB) (Rotational)
[Show SMART report] <<<<<<<<<<<<<<<<<<<<<<<<<--------------------------------------------
APPLE SSD SM128E disk0 : (121.33 GB) (Solid State - TRIM: Yes)
[Show SMART report] <<<<<<<<<<<<<<<<<<<<<<<<<--------------------------------------------
Click on each of the [Show SMART report] buttons, and post the results in a reply.
The S.M.A.R.T. data may or may not be useful, but until it is seen, we will not know.
This is the report for disk1 and there are errors but I can't interpret the seriousness of the errors:
smartctl 6.5 2016-05-07 r4318 [Darwin 16.5.0 x86_64] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Seagate Barracuda 7200.14 (AF)
Device Model: APPLE HDD ST3000DM001
Serial Number: Z1F1X3LM
LU WWN Device Id: 5 000c50 04f477b26
Firmware Version: AP15
User Capacity: 3,000,592,982,016 bytes [3.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 7200 rpm
Form Factor: 3.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Thu May 18 21:28:34 2017 EDT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x82) Offline data collection activity
was completed without error.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 584) seconds.
Offline data collection
capabilities: (0x7b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 348) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SCT capabilities: (0x10bd) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000f 117 093 006 Pre-fail Always - 152779320
3 Spin_Up_Time 0x0003 095 094 000 Pre-fail Always - 0
4 Start_Stop_Count 0x0032 088 088 020 Old_age Always - 12622
5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0
7 Seek_Error_Rate 0x000f 087 060 030 Pre-fail Always - 4805630705
9 Power_On_Hours 0x0032 077 077 000 Old_age Always - 20533
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 088 088 020 Old_age Always - 12751
184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0
187 Reported_Uncorrect 0x0032 001 001 000 Old_age Always - 733
188 Command_Timeout 0x0032 100 100 000 Old_age Always - 0 0 2
189 High_Fly_Writes 0x003a 096 096 000 Old_age Always - 4
190 Airflow_Temperature_Cel 0x0022 055 046 045 Old_age Always - 45 (Min/Max 25/45)
191 G-Sense_Error_Rate 0x0032 100 100 000 Old_age Always - 0
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 94
193 Load_Cycle_Count 0x0032 094 094 000 Old_age Always - 12752
194 Temperature_Celsius 0x0022 045 054 000 Old_age Always - 45 (0 15 0 0 0)
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 64
198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 64
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
SMART Error Log Version: 1
ATA Error Count: 733 (device log contains only the most recent five errors)
CR = Command Register [HEX]
FR = Features Register [HEX]
SC = Sector Count Register [HEX]
SN = Sector Number Register [HEX]
CL = Cylinder Low Register [HEX]
CH = Cylinder High Register [HEX]
DH = Device/Head Register [HEX]
DC = Device Command Register [HEX]
ER = Error register [HEX]
ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.
Error 733 occurred at disk power-on lifetime: 20488 hours (853 days + 16 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
25 00 10 ff ff ff 4f 00 09:07:21.602 READ DMA EXT
25 00 10 ff ff ff 4f 00 09:07:18.626 READ DMA EXT
25 00 10 ff ff ff 4f 00 09:07:15.659 READ DMA EXT
25 00 10 ff ff ff 4f 00 09:07:12.725 READ DMA EXT
2f 00 01 10 00 00 00 00 09:07:12.642 READ LOG EXT
Error 732 occurred at disk power-on lifetime: 20488 hours (853 days + 16 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
25 00 10 ff ff ff 4f 00 09:07:18.626 READ DMA EXT
25 00 10 ff ff ff 4f 00 09:07:15.659 READ DMA EXT
25 00 10 ff ff ff 4f 00 09:07:12.725 READ DMA EXT
2f 00 01 10 00 00 00 00 09:07:12.642 READ LOG EXT
60 00 10 ff ff ff 4f 00 09:07:09.499 READ FPDMA QUEUED
Error 731 occurred at disk power-on lifetime: 20488 hours (853 days + 16 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
25 00 10 ff ff ff 4f 00 09:07:15.659 READ DMA EXT
25 00 10 ff ff ff 4f 00 09:07:12.725 READ DMA EXT
2f 00 01 10 00 00 00 00 09:07:12.642 READ LOG EXT
60 00 10 ff ff ff 4f 00 09:07:09.499 READ FPDMA QUEUED
60 00 08 ff ff ff 4f 00 09:07:09.492 READ FPDMA QUEUED
Error 730 occurred at disk power-on lifetime: 20488 hours (853 days + 16 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
25 00 10 ff ff ff 4f 00 09:07:12.725 READ DMA EXT
2f 00 01 10 00 00 00 00 09:07:12.642 READ LOG EXT
60 00 10 ff ff ff 4f 00 09:07:09.499 READ FPDMA QUEUED
60 00 08 ff ff ff 4f 00 09:07:09.492 READ FPDMA QUEUED
60 00 10 ff ff ff 4f 00 09:07:09.490 READ FPDMA QUEUED
Error 729 occurred at disk power-on lifetime: 20488 hours (853 days + 16 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
60 00 10 ff ff ff 4f 00 09:07:09.499 READ FPDMA QUEUED
60 00 08 ff ff ff 4f 00 09:07:09.492 READ FPDMA QUEUED
60 00 10 ff ff ff 4f 00 09:07:09.490 READ FPDMA QUEUED
60 00 08 ff ff ff 4f 00 09:07:09.490 READ FPDMA QUEUED
60 00 10 ff ff ff 4f 00 09:07:09.490 READ FPDMA QUEUED
SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]
SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.
The disk0 report has invalid characters that generate an error message every time I try to post a reply. But there were no error messages in the text that I could see.
anthonyfromspencerville wrote:
The disk0 report has invalid characters that generate an error message every time I try to post a reply. But there were no error messages in the text that I could see.
You should be able to use <https://pastebin.com/> and put a pointer in here if you want to post that SMART report.
With respect to 3TB Seagate drive
1 Raw_Read_Error_Rate 0x000f 117 093 006 Pre-fail Always - 152779320
7 Seek_Error_Rate 0x000f 087 060 030 Pre-fail Always - 4805630705
9 Power_On_Hours 0x0032 077 077 000 Old_age Always - 20533
Or about 7,000 read errors per hour.
Since you Mac has not rolled over and died, the disk drive is fixing those errors using either ECC (Error Correcting Codes) or retires.
The Seek errors generally mean it took more than one try position the disk's read head over the correct track. That is more on the order of 200,000 seek errors per hour. That might be affecting your performance when using that drive.
Is your iMac setup with a Fusion Drive configuration, or has the Fusion configuration been removed, and they are now just 2 separate storage devices? And if so, which is the boot device?
Generally in a Fusion configuration, the SSD is where the writes initially go (then get slowly migrated to the rotating disk), and more frequently used files are kept on the SSD, including the boot files so the Mac boots faster.
If you do not find the root cause of your kernel panics, you might want to consider making a Genius Bar appointment at your local Apple store and have them evaluation your system, especially looking at your disks.
Many thanks for your efforts and analysis. I agree, I need to make a Genius Bar appointment. I recall that in 2015 that there was an Apple recall for the 3TB disk drives for Apple Macs made in late 2012 in which some were failing. Since my disk drive was working fine, I decided to defer replacing the drive but now I wish I had replaced it. Maybe they will still replace it but my guess is the recall program has long ago ended. First I need to do a full backup. Thanks again.
This problem has popped up now that we have upgraded our 2012 iMac 27" w/3TB Fusion to Sierra. It was an upgrade from Yosemite. After the problem manifested, we even tried a wipe and install via Apple Network Install (Option-Command-R).
We have discovered that holding down Option at start-up and choosing the disk avoids the panic.
Machine is out of warranty, so if we take it in, the ^%(%^* Fusion drive is coming out!! It has been nothing but a headache. Just give me a PURE SSD!!!
最后更新：2017-09-22 00:50:06
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