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SD OK on camera, ok on 7, not on XP and Android


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#1 betrand

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Posted 03 November 2014 - 02:47 PM

Hi,

Been using this SD card 4GB Fat32

with my camera for a year or so.

Was OK on my laptop (XP) until recently.

 

Now, though the adapter (thumbsize USB) appears,

and is recognized, there is no drive on XP.

This could be a driver problem, but the drive itself doesn't

appear on a Disk tool on XP (HXD) as a physical drive.

 

Grub4dos (from the HDD) doesn't see the physical drive either (hd1,0) (didn't try (hd1) though) ("disk doesn't exist").

The SD card also doesn't work on Android (tablet). Well in fact it appears, but 0 (zero) files.

 

The SD works "perfectly" with the camera, browsing or shooting.

On a Windows 7 it works OK too.

 

Ideas welcome...

 

PS, the XP computer is starting to be funny, although the SD not working on Android is strange.

Edit: on a Win7 the same laptop model as the previous Win7 test (different computer), the SD appears for 1 second as E:.

Then disappears. :unsure:



#2 buyerninety

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Posted 09 November 2014 - 07:48 AM

"Ideas welcome..."

Assuming you've already copied all the data you want off the SD card, maybe try

testing the card, preferably in some computer that has an SD card reader (if USB,

using not less than USB 2.0 speed), to start you off, read suggestions on this page;

http://goprouser.fre...ues-t10655.html

P.S., maybe 1st try gently cleaning the SD card contacts with a clean eraser and wiping

the contacts clean with a clean cloth...



#3 betrand

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Posted 09 November 2014 - 12:10 PM

Thanks Buyerninety,

Thanks for the time, 

 

maybe try testing the card, preferably in some computer that has an SD card reader

 

I think I am using a faulty USB-SD adaptor. Files (re)appeared magically on Android.



#4 RoyM

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Posted 10 November 2014 - 12:09 AM

 

P.S., maybe 1st try gently cleaning the SD card contacts with a clean eraser and wiping

the contacts clean with a clean cloth...

 

This is a perfectly accepted practice to clean contacts. ("Be Gentle Though")

"Please be aware that most internal PC digital contacts are gold plated."

If using an eraser, use the white erasers and not the pink ( "too abrasive" )

steel wool, gently rubbed, works well also.

Do not get too aggressive, as the gold plating is very thin.

Gently wipe away eraser leftovers with alcohol swab or clean compressed air,

do not touch gold contacts with fingers or you will contaminate with oils.

 

For slotted/seated contacts like video cards and such,

blow slots clean with compressed air, inspect contacts for damage,

clean the edge connectors of the slotted card to be used here, like above.

seat and reseat, mutiple times, the card to be used in that slot,

remove card and inspect edge contacts under magnification for healthy connections.

You can easily identify suspected bad connection via the tracks and traces that the slot contacts scratch into the edge connector contacts.

 

Happy troubleshooting.

I would also check into your partitioning scheme.

 

Regards

RoyM



#5 Wonko the Sane

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Posted 10 November 2014 - 11:18 AM

Ok, I don't think I should tell this :dubbio: to people who are not members of the club, didn't take the oath and know nothing about the secret handshake :w00t:, but here is how I clean the contacts on the "adapter/socket size". ;)

Get an old, not working card (or get one of those plastic "fake" SD cards that are sometimes shipped with mini-laptops tablets).
Grind it a little on a piece of sandpaper (let's say on a 180 or 240 grade) to make it a little bit thinner.
Get a small piece of very fine sandpaper (1000 or above, the kind is normally used wet to prepare car bodies for spray painting), the same width of the SD card and 4x it's length.
Fold the sandpaper in half and wrap the sandpaper around the ground down SD card longitudinally.
Spray on the sandpaper some electrical contact cleaner.
Insert and extract the sandpaper and SD card in the socket a few times.

:duff:
Wonko

#6 RoyM

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Posted 12 November 2014 - 03:12 AM

Nice stuff Mr. Wonk, I never thunked of that one, i've tried other more cruder ways.

 

I certainly am adding your contact cleaner to my toolbox, Thanks.

With 2 slight changes to accomodate my environment.

I will probably use a wet/dry sandpaper, very fine.

and then use Denatured alcohol as cleaner. <-- no residue.

 

Didn't mean to hijack this thread Betrand, but has any of this helped, can we hear back from you.

 

Regards

RoyM



#7 Wonko the Sane

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Posted 12 November 2014 - 11:18 AM

Denatured? :unsure:

 

You are in the US, and unlike what we have available here[1] :frusty:, you can find easily pure isopropyl alcohol.

 

Denatured alcohol (ethanol) may actually leave residues, unlike isopropyl alcohol:

http://en.wikipedia....alcohol#Solvent

 

:duff:

Wonko

 

[1] for some strange legal reasons you need a "special permit" to get "pure" isopropyl alcohol in Italy, what you can get (and it is not easy to find, usually only in "arts and craft" shops, as it used in restoration cleaning of wood) contains anyway additives.






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