Possibly bogus SMART wear leveling value preventing OS X Mojave installation Announcing the...

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Possibly bogus SMART wear leveling value preventing OS X Mojave installation



Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern)hard drive pending sector countDiagnosing Windows / HDD / RAID0 failurecannot format bad hard diskHow to determine which partition has badblocks?SSD Wear-Leveling and FragmentationMy hard drive has been running for 26 billion years?Why is a SMART attributing failing even though the normalized value is still 100?What do the current, worst, and threshold SMART values mean?Does wear leveling function normally without TRIM?Asus S300C is blocked by abnormal disk business





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I have a late 2013 Macbook Pro Retina 15. It has a 500GB SDD model "APPLE SSD SM0512F." It reports failing smart status even though the wear level count is near 50%.



173 Wear_Leveling_Count     0x0036   053   053   100    Old_age   Always   FAILING_NOW 17558115913881


From what I understand the current and worst values (both 53 here) are intended to represent the remaining lifetime of the drive, i.e. I've used 47% of the estimated lifetime. The 100 here is the "Threshold" value for failure. There seems to be discussion around the web that this is actually a firmware level bug with the Samsung/Apple SSDs, i.e. Threshold should be 0 because the value starts at 100 and counts toward 0 as the drive ages. Even if it is counting in the opposite direction, 53% probably shouldn't be a failure. What is infuriating is that OS X Mojave reads this apparently bogus value and refuses to install outright. Am I misinterpreting the SMART values? Has anyone figured out how to hack this value and just force the update to install? Apple seems to be just conservatively failing if there is any possible SMART failure even if the drive itself might be giving a false positive. Totally infuriating.










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    I have a late 2013 Macbook Pro Retina 15. It has a 500GB SDD model "APPLE SSD SM0512F." It reports failing smart status even though the wear level count is near 50%.



    173 Wear_Leveling_Count     0x0036   053   053   100    Old_age   Always   FAILING_NOW 17558115913881


    From what I understand the current and worst values (both 53 here) are intended to represent the remaining lifetime of the drive, i.e. I've used 47% of the estimated lifetime. The 100 here is the "Threshold" value for failure. There seems to be discussion around the web that this is actually a firmware level bug with the Samsung/Apple SSDs, i.e. Threshold should be 0 because the value starts at 100 and counts toward 0 as the drive ages. Even if it is counting in the opposite direction, 53% probably shouldn't be a failure. What is infuriating is that OS X Mojave reads this apparently bogus value and refuses to install outright. Am I misinterpreting the SMART values? Has anyone figured out how to hack this value and just force the update to install? Apple seems to be just conservatively failing if there is any possible SMART failure even if the drive itself might be giving a false positive. Totally infuriating.










    share|improve this question







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      I have a late 2013 Macbook Pro Retina 15. It has a 500GB SDD model "APPLE SSD SM0512F." It reports failing smart status even though the wear level count is near 50%.



      173 Wear_Leveling_Count     0x0036   053   053   100    Old_age   Always   FAILING_NOW 17558115913881


      From what I understand the current and worst values (both 53 here) are intended to represent the remaining lifetime of the drive, i.e. I've used 47% of the estimated lifetime. The 100 here is the "Threshold" value for failure. There seems to be discussion around the web that this is actually a firmware level bug with the Samsung/Apple SSDs, i.e. Threshold should be 0 because the value starts at 100 and counts toward 0 as the drive ages. Even if it is counting in the opposite direction, 53% probably shouldn't be a failure. What is infuriating is that OS X Mojave reads this apparently bogus value and refuses to install outright. Am I misinterpreting the SMART values? Has anyone figured out how to hack this value and just force the update to install? Apple seems to be just conservatively failing if there is any possible SMART failure even if the drive itself might be giving a false positive. Totally infuriating.










      share|improve this question







      New contributor




      zrnsm is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      I have a late 2013 Macbook Pro Retina 15. It has a 500GB SDD model "APPLE SSD SM0512F." It reports failing smart status even though the wear level count is near 50%.



      173 Wear_Leveling_Count     0x0036   053   053   100    Old_age   Always   FAILING_NOW 17558115913881


      From what I understand the current and worst values (both 53 here) are intended to represent the remaining lifetime of the drive, i.e. I've used 47% of the estimated lifetime. The 100 here is the "Threshold" value for failure. There seems to be discussion around the web that this is actually a firmware level bug with the Samsung/Apple SSDs, i.e. Threshold should be 0 because the value starts at 100 and counts toward 0 as the drive ages. Even if it is counting in the opposite direction, 53% probably shouldn't be a failure. What is infuriating is that OS X Mojave reads this apparently bogus value and refuses to install outright. Am I misinterpreting the SMART values? Has anyone figured out how to hack this value and just force the update to install? Apple seems to be just conservatively failing if there is any possible SMART failure even if the drive itself might be giving a false positive. Totally infuriating.







      hard-drive mac ssd






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