I have a brand new sandisk 512gb and 64gb micro sd cards. I have been trying to format them to then upload raspbian on to them for my raspberry pis but both are write protected and I can't clean wither of them manually (by pushing down the tab on the sd card adapter) or virtually through diskpart function on the command line. I get to "disk attributes cleared successfully" but then the "clean" command fails:
DISKPART> select disk 1
Disk 1 is now the selected disk.
DISKPART> attributes disk clear readonly
Disk attributes cleared successfully.
DISKPART> clean
DiskPart has encountered an error: The request could not be performed because of an I/O device error.
See the System Event Log for more information.
DISKPART>