Reply
Newbie
Posts: 1
Registered: ‎11-08-2012

Re: Sandisk Ultra 64gb MicroSD Wont format.

[ Edited ]

Tale of woe about 64gb MicroSD cards.

 

I love these things and have five of them but they don't seem to take repeated formatting very well.  After being satisfied with my first three I bought two more from Best Buy.  Neither of them worked and Best Buy exchanged them.

One of them worked okay until I formatted it for the third or fourth time, then it failed.  The other didn't work at all.

 

I contacted SanDisk and got one of them replaced.  It worked.

Then SanDisk replaced the second.  It too worked.

 

I cannot now tell which card is which, but I the other day I reformatted one a couple of times and it stopped taking a format.  Every time I tried it seemed to get worse.  After a couple of failures I tried other formats than exFAT, with no luck.  I tried another formatting tool which usually works but it too failed.

 

As I said above, I have five cards now.  Only one of them remains bad and I'm hoping that what a previous writer said is true - that there was a bad batch - because other than this string of issues, I have had great experiences with SanDisk products.  I'm almost embarrassed to ask for another replacement but although the price is reasonable, $65 is just too much to let it go. 

 

Imagine, $1.00 per gigabyte of storage!  On a card smaller than my thumbnail!  Outstanding!  If they become more reliable I'l be picking up at least two more.

SanDisk Guru
Posts: 16,040
Registered: ‎04-17-2008

Re: Sandisk Ultra 64gb MicroSD Wont format.


richa60 wrote:

Tale of woe about 64gb MicroSD cards.

 

I love these things and have five of them but they don't seem to take repeated formatting very well.  After being satisfied with my first three I bought two more from Best Buy.  Neither of them worked and Best Buy exchanged them.

One of them worked okay until I formatted it for the third or fourth time, then it failed.  The other didn't work at all.

 

I contacted SanDisk and got one of them replaced.  It worked.

Then SanDisk replaced the second.  It too worked.

 

I cannot now tell which card is which, but I the other day I reformatted one a couple of times and it stopped taking a format.  Every time I tried it seemed to get worse.  After a couple of failures I tried other formats than exFAT, with no luck.  I tried another formatting tool which usually works but it too failed.

 



OK, I'll bite. What's with all the formatting? This should be a rare occurance, a last resort, a once in a great while sort of thing. Not an daily or hourly ritual. 

 

What you're doing sounds akin to tearing down and rebuildiing your car's engine every weekend, just so it's fresh for the next week's commute.

 

Smiley Frustrated

Newbie
Posts: 3
Registered: ‎11-25-2012

Re: Sandisk Ultra 64gb MicroSD Wont format.

That's a bad example/comparision.  These guys are not tearing down their card and rebuilding it physically as in your example.  They are logically changing the maps within the card.  A better example would be chipping their computer within their engine and adjusting their timing for more performance... something more "logical" or map related.  And, in my opinion, there is no difference between writing data to a sector/block or foratmatting the card.  it's all writes.

Newbie
Posts: 1
Registered: ‎02-25-2013

Re: Sandisk Ultra 64gb MicroSD Wont format.

I propose you format your SD card with MS-DOS (FAT32) and enjoy it!

Newbie
Posts: 1
Registered: ‎06-06-2013

Re: Sandisk Ultra 64gb MicroSD Wont format.

I had a similar problem. I have a Galaxy S3 and was able to format it through the phone fine. but when I plugged it into 2 diferent computers, XP and Windows 7, it would not format correctly I had 72-1 reader I bought a year ago that read all sd cards, even the new 32GB cards. But found out finally that is was still to old for the new 64GB cards. I purchased the (SDDR-289 reader) and now I can use my 64GB card anywhere I go. Only formatted once on the phone. Then it was plug and play on the computers and they instantly reconized the card at 59.47GB capacity. Hope that helps. Smiley Happy

Newbie
Posts: 1
Registered: ‎08-20-2013

Re: Sandisk Ultra 64gb MicroSD Wont format.

I was putting movies in my sd card for long time but yesterday I couldn't play them. They were there but won't play. Then I tried to delete them couldn't, tried to format first in my laptop couldn't, then I tried in my samsung galaxy s3, formatting is done but files still remain there.
I don't care that much about files but I would love to fix my sd card.
I can access old files, I can put pics, music, microsoft office files and they work but not movies and can't delete files.
Please help me
Newbie
Posts: 2
Registered: ‎04-07-2014

Re: Sandisk Ultra 64gb MicroSD Wont format.

Installing the SD formatting tool formatted the disk but the computer was not recognizing it. I went to microsoft website and searched and downloading an update and then it working and my SD card functioned as normal.... I put my SD card into another computer and it acted like it originally did with the issue. I did the same thing as downloading the update from the microsoft website and everything works as a charm afterwards.

 

 

http://www.microsoft.com/en-us/download/details.aspx?id=19364

 

KB955704 is the update for windows XP that was downloaded to get this to work properly.

 

Hope this works for you guys.....

Newbie
Posts: 2
Registered: ‎04-07-2014

Re: Sandisk Ultra 64gb MicroSD Wont format.

http://www.microsoft.com/en-us/download/details.aspx?id=19364

 

KB955704 is the update for windows XP that was downloaded to get this to work properly.

Newbie
Posts: 1
Registered: ‎10-07-2014

Re: Sandisk Ultra 64gb MicroSD Wont format.

 
Newbie
Posts: 1
Registered: ‎05-18-2015

Re: Sandisk Ultra 64gb MicroSD Wont format.

I have a SanDisk Ultra 64GB In My mobile device type Galaxy S5 I want to do formate and When you attempt to de formate SanDisk Ultra by windows show:- ( window was unable to complete the format), and when attempt format by Sd formataatar:- ( the Memory Card is write-Protected Please relase The Write Protect switch ) Please help me to do format The Memory Thank you very much