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  1.    05 Aug 2017 #11
    Join Date : Oct 2014
    Posts : 758
    Windows 7

    When specific types of internal failure are detected many drives will go into a read only mode to preserve existing data. This is typically not reversible. Any operation on the drive could have triggered this detection. As such drives usually fail without warning or apparent cause this isn't really an unusual failure.
      My ComputerSystem Spec
  2.    05 Aug 2017 #12
    Join Date : Jul 2014
    Serbia
    Posts : 10,430
    W10 Insider + Linux

    Quote Originally Posted by LMiller7 View Post
    When specific types of internal failure are detected many drives will go into a read only mode to preserve existing data. This is typically not reversible. Any operation on the drive could have triggered this detection. As such drives usually fail without warning or apparent cause this isn't really an unusual failure.
    The thing is they don't fail little by little, just boom and they are gone.
      My ComputersSystem Spec
  3.    05 Aug 2017 #13
    Join Date : Jun 2017
    Posts : 113
    10 Pro 16299.15 64 Bit

    use the diskpart commands first then use the hp tool. i just did this for a flash drive that i couldn't get diskpart to restore or the various 3rd party tools to restore, and now i have access to it again.
      My ComputerSystem Spec
  4.    05 Aug 2017 #14
    Join Date : Oct 2015
    Posts : 24
    Windows 10 Pro
    Thread Starter

    Quote Originally Posted by LMiller7 View Post
    When specific types of internal failure are detected many drives will go into a read only mode to preserve existing data. This is typically not reversible. Any operation on the drive could have triggered this detection. As such drives usually fail without warning or apparent cause this isn't really an unusual failure.
    just curious - what are the rates of failure on SD and microSD cards? I saw backblaze tests for HDDs and SDDs but not SD cards. just wondering what i can do to extend the life of my cards.
      My ComputerSystem Spec
  5.    05 Aug 2017 #15
    Join Date : Oct 2014
    Posts : 758
    Windows 7

    The rates of failure would depend greatly on the manufacturer and specific device. It is pretty hard to kill an SSD with writes but SD cards are a different animal entirely. They are more cheaply made and are not as reliable.
      My ComputerSystem Spec
  6.    06 Aug 2017 #16

    Quote Originally Posted by tententwenty View Post
    just curious - what are the rates of failure on SD and microSD cards? I saw backblaze tests for HDDs and SDDs but not SD cards. just wondering what i can do to extend the life of my cards.
    Hi there
    just depends on how often they are used -- a lot of writing / erasing will kill them quicker than reads.

    I have an HP proliant microserver where I use an internal micro SD card to store the Linux boot partition -- the micro server boots from this -- card is around 2 years old and no failures. I need to boot this way as the server hardware will only boot from an SSD (which I use instead of a DVD in the DVD slot) if the server is iHP's internal proprietary RAID mode (which isn't good on this server as it's essentially poor software "Fake RAID" from a slowish chipset).

    The microsd card will boot when the server is in either RAID or AHCI mode --set in the BIOS initial setup on the server - and after kernel is loaded the rest of the OS runs from the SSD. I use the 4 HDD bays as 2 sets of RAID 0 HDD's in software mode (Linux software RAID is VERY FAST --much faster than the HP built in version !!!).

    The server will boot from one of the HDD slots but I keep those just for data. The SSD is fast enough -- the boot loader is quite small so using the micro sd card to boot and start the kernel load doesn't take much time at all and is only reading.

    This server runs as a NAS server using CENTOS 7 --- runs just fine.

    So I'd suspect the SD micro cards are highly dependent on erases and writes - so if you back up the data regularly there shouldn't be any problem if they get broken -- and they apparently do.

    Problem is probably worse when these are used frequently in Mobile phones as the phones can get quite warm when in constant use - especially the more modern phones with quite powerful CPU's enclosed in a small case so poor cooling.

    BTW these servers are brilliant for NAS boxes -- quite small with micro cube factor and have 4 HDD bays -- really cheap - I have one just sitting under my TV - they run 24/7 for weeks on end with very little noise and are extremely reliable - if you get over the slightly unconventional way I boot it. Run any Linux or even Windows on them then you can install anything you want - easily - they make excellent cheap NAS devices - much simpler than those more expensive QNAP boxes with proprietary software.

    Cheers
    jimbo
      My ComputerSystem Spec

 
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