Check the SD card lock switch and slide it to unlock
Reinsert the SD card and try again
Clean the SD card and card reader contacts
Try a different card reader or device
Remove read-only attribute on Windows using DiskPart
Open Command Prompt as administrator
Type `diskpart`
Type `list disk`
Type `select disk X`
Type `attributes disk clear readonly`
Type `exit`
Remove write protection on Windows Registry if enabled
Open Registry Editor
Go to `HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlStorageDevicePolicies`
Set `WriteProtect` to `0`
Format the SD card
Use Disk Management to delete and recreate the partition
Check for SD card adapter issues
Scan the SD card for errors
Run `chkdsk X: /f`
Update or reinstall SD card reader drivers
Try the SD card on another computer
Replace the SD card if it is physically damaged or permanently locked