I am trying to format sd card in which I first installed noobs(raspberry pi). It created its own partition tables and now I want to use the sd card for some other purpose.
I have tried the following:
1) Tried the direct format command, but it said input/output error
2) Tried sdcardformatter on windows
3) Tried gparted.
4) Used the fdisk command
After all these trials without any success, now I am trying to use the dd command. The screen shot is as follows: Screenshot of my terminal
Its been 3 hours since I have started the command. Even the amount of data processed is around 40.2M since 2 hours.
I am using 8GB machine with Intel i7 processor, ubuntu 16.04. The sd card is class 10 32GB micro SD card. It doesn't have any lock!
Any help would be appreciated. Thanks