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May, 2025

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Sandisk Extreme 16gb SD Card Problems

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TaySwift
Posts: 3436 - Karma: 1,616
Having some troubles with my SD card fro my 60D. I got it back from a friend and it says
"CARD CANNOT BE ACCESSED. REINSERT/CHANGE CARD OR FORMAT WITH CAMERA"
and it say's FORMAT FAILED when i do format it.

When i insert it into my laptop, it says Disk is unreadable by this computer.

Any troubleshooting would be great!
Plus K to helpful answers

Card is a Sandisk Extreme 30mb/s SDHC 16GB class 10
13 years ago
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SkiJay.
Posts: 1550 - Karma: 653
Is the little slider thing on the side on "lock". and also does your friend have a pc and you have a mac? or vice versa?
13 years ago
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TaySwift
Posts: 3436 - Karma: 1,616
he used a Mac and i use a mac, and no it is unlocked
13 years ago
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B.Taillefer
Posts: 420 - Karma: 321
This deserves a bump considering I'm the friend who had the card last....
13 years ago
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123+ski
Posts: 2832 - Karma: 581
put it in your camera and format it maybe?
13 years ago
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1337
Posts: 31078 - Karma: 29,667
go to disk utility
the sd disk should be listed on the side
click format/partition
MAKE SURE YOU ARE CHOOSING THE SD CARD AND NOT ANOTHER DRIVE. THE FOLLOWING WILL ERASE ALL DATA
format as free space
remove
insert into camera
format

should be fixed!
13 years ago
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B.Taillefer
Posts: 420 - Karma: 321
I actually never had it in my camera, just my computer
13 years ago
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123+ski
Posts: 2832 - Karma: 581
oh, then try what jamie said
13 years ago
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TaySwift
Posts: 3436 - Karma: 1,616
the SD isn't showing up in my disk utility
13 years ago
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corona
Posts: 12845 - Karma: 33,290
if you really want it to work, get Ubuntu boot disk and use Gparted. it WILL work.
13 years ago
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family_vacation
Posts: 6200 - Karma: 7,840
That happened to one of mine, even specialized SD card formatting software didn't work. I have since abandoned it.
13 years ago
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corona
Posts: 12845 - Karma: 33,290
are you using Windows? if you're using Windows I have a potential fix that worked for me on a windows machine with a usb key doing something similar
13 years ago
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corona
Posts: 12845 - Karma: 33,290
ok, anyone having this problem on Windows then try this.

unplug everything usb

open notepad and copy this into it:


REGEDIT4

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment]

"DEVMGR_SHOW_NONPRESENT_DEVICES"="1"



save the file as something, then change the extension from .txt to .reg

run this file, you'll get a warning but accept it


now in Control Panel open up Device Manager

under View select 'show hidden devices'

expand disk drives and you should see a list of all the disk drives that have been installed on your computer.

right-click and uninstall all usb and SD memory drives. the ones with transparent icons are the ones not currently being used


next go into universal serial bus controllers and uninstall everything with transparent icon

next in storage volumes and uninstall all ones with transparent icon.


now reboot computer. when I first did this I was told to reboot twice. so reboot again.


your usb key or flash card should now work




these are instructions I was given a couple years ago for this exact problem. worked for me on a Windows 7 machine.
13 years ago
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TaySwift
Posts: 3436 - Karma: 1,616
should i take it back to the store i got it from? i got it in october so i should have warranty
13 years ago
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Benji.
Posts: 1146 - Karma: 88
Make sure your card reader/slot is clean. No joke, it might be that easy.

If not, the disk utility option will work.
13 years ago
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bout_it
Posts: 1233 - Karma: 17
sometimes you just have to contact SanDisk...have you thought of that?
13 years ago
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M3TRO
Posts: 645 - Karma: 5,404
Did you buy it online for an unreasonably low price?

It could be fake... scamdisk.
13 years ago
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1337
Posts: 31078 - Karma: 29,667
They would be able to do very little
13 years ago
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TaySwift
Posts: 3436 - Karma: 1,616
NO i bought it from the best camera store in my city (vistek)
13 years ago
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M3TRO
Posts: 645 - Karma: 5,404
Vistek is very, very legit. Take it back to them with the receipt, explain everything you just told us, and they should give you a new one.
13 years ago
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