All Fields Greyed on Unallocated Space

To delete volumes of pen drive giving error of unallocated space

If you are facing error for unallocated space

Go to cmd with administrator privileges

type  DISKPART

type list volume

Check number of removable drive suppose 3.

delete volume 3

And your partition on that drive will be deleted.

Basics of Bitcoin and Blockchain

For Blockchain & Bitcoin understanding,


If you are looking for general use of Bitcoins,  https://bitcoin.org/en/

For technical & nontech people, it is always good to understand terms in Plain English.

In case of Bitcoins, it is possible: http://amzn.to/2vTOaMM

These are the books you can refer because reading a tutorial might lead you into Confused state:


For Beginners:            Blockchain Basics: A Non-Technical Introduction in 25 Steps

For implementation:    Blockchain: Blueprint for a New Economy

For Bitcoin & block chain:  Mastering bitcoin programming the open blockchain 2nd edition

For python freaks, here is a treat:  https://github.com/bigchaindb/bigchaindb

If you want to try out Bitcoins for windows, you can download it from here:

https://www.bitcoinunlimited.info/download