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SOLUTION 4

 -  Change the drive letters 

 
NOTE:  The SDDR-89, SDDR-189, SDDR-289 reader should show 4 drive letters under 

My 

Computer

SD/SDHC/SDXC memory card is write protected or locked 
 
Why do I get a "The disk is write-protected" message when I transfer files to 
my SD card?  

 

SOLUTION 1

 - Unlock the memory card. 

 
There is a 

Lock

 switch on the left side of the SD card. Make sure the 

Lock

 switch is slid up 

(unlock position). You will not be able to modify or delete the contents on the memory card if it 
is locked. 
 

SOLUTION 2

 - Toggle the lock switch. 

 
If the lock switch is loose and moves easily It is likely the switch is sliding to the locked position 
as the card is placed in your host device. In this case the card will need to be replaced. 
 
Please contact SanDisk support to check warranty status. 

 

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