whoami user
su -u user
password : live
sudo -s fdisk -l
the-beginners-guide-to-linux-disk-utilities/
There are two ways to detect bad sectors in Linux: you can use the Disk Utility GUI, or if you are a command line geek like us, you can use the badblocks command to check your hard disk for bad sectors:
sudo badblocks -v /dev/sdb1
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