What is this * sign for?

That just indicates which partition has been selected.

Edit: Oh and you should be able to remove the write protection in diskpart, by entering attributes disk clear readonly, after you've selected Disk 1.
 
That just indicates which partition has been selected.

Edit: Oh and you should be able to remove the write protection in diskpart, by entering attributes disk clear readonly, after you've selected Disk 1.
Hi
I did this but it was not successful.
 
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