[chbot] Unlocking a microSDHC or SDXC card

[Mark Atherton]

Have you tried the formatter from the SD Card Association ?

https://www.sdcard.org/downloads/formatter_4/

-Mark

On 14/01/2019 3:30 PM, Trevor Wignall wrote:
> Hi Synco
> Yes, they are micro SD cards, and I am using an adaptor but I have 
> tried two different adaptors with the same results. I have moved the 
> write protect (or "lock") slider to the unlocked position, and for 
> some attempts this has given a difference in the error message (i.e. 
> it doesn't even make an attempt when write protected).
> The cards worked for a year or more, then each suddenly stopped 
> working in the phone, and the phone no longer offered it. A new card 
> then worked perfectly in the phone, so it looks like a software write 
> protect on the card, or something else corrupted.
> I don't have any Linux computers other than my Raspberry Pi's, but I 
> will try to bring the cards (and adaptors) to the next meeting (in one 
> week's time I believe).
> Thanks
> Trevor
>
> On Mon, Jan 14, 2019 at 2:46 PM Synco Reynders 
> <synco.reynders at gmail.com <mailto:synco.reynders at gmail.com>> wrote:
>
>     Hi Trevor,
>       Very unusual that you have two cards that don't work. I assume
>     they are microSD size, and you are using the same holder? -since
>     I've found often the holder can have issues.
>     Also make sure you have the 'write protect' slider on the card /
>     card-holder pushed forward (towards the contacts).
>     Many linux commands to test SD cards, like use:
>     lsusb / lsblk to see if the card has been detected
>     then fdisk, gparted, ... for formatting.
>     Bring them allong to next meeting and sure I or someone will sort
>     it out,
>     /s
>
>     On Mon, 14 Jan 2019 at 14:21, Trevor Wignall <zl3adz at gmail.com
>     <mailto:zl3adz at gmail.com>> wrote:
>
>         Does anyone have any tips or special means to unlock a micro
>         SD memory card which has been corrupted by a Samsung Android
>         phone? I have tried a number of methods including trying to
>         reformat them in a camera, using a Hard Disk Low Level
>         Formatting Tool, using AOMEI Partition Assistant, and using SD
>         Card Formatter. Nothing seems to be able to change the card's
>         contents. I have two cards, one of which (64GB SDXC card) is
>         readable, even after all of the reformatting attempts. The
>         other (32GB SDHC card) is more totally bricked. I am not
>         worried about the contents of these cards, just after a way to
>         allow these cards to be reused.
>         Any help welcome.
>         Thanks
>         Trevor
>
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>
>     -- 
>     Synco Reynders
>       m: +64 21 1825332
>       e: synco.reynders at gmail.com <mailto:synco.reynders at gmail.com>
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