Mark Bad Blocks Check Hard Drive Linux

Which disk?

sudo fdisk -l
Non-destructive read-write test

If you want to preserve your data try this first

sudo badblocks -svn /dev/sdb

Check to see if your fix worked

sudo apt-get install smartmontools
sudo smartctl --all /dev/sdb
sudo smartctl -A /dev/sdb
sudo smartctl -a /dev/sdb | grep -i reallocated
Use DD to automatically mark bad blocks – destructive

if you are OK wiping the drive, this seems to be the easiest method

sudo dd if=/dev/zero of=/dev/sdb bs=512k
Use badblocks and fdisk to remove bad blocks

Step 1 – save bad blocks to file

sudo badblocks /dev/sdb > /home/bad-blocks

Step 2 – mark bad blocks with fdisk

sudo fdisk -l /home/bad-blocks /dev/sdb

HDD repair example-tutorial

HDD repair example-tutorial

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