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    How to reformat HDD & SSD to 512B Sector Size

    I have 8 of the EMC 2tb drives that were 520 and I was able to make them 512 by the following commands flawlessly. sudo chmod 777 /dev/sg1 sg_format --format --size=512 --six -v /dev/sg1 It appears the chmod 777 command is the key as my drives will never format to 512 block size without it.