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===== FILESYSTEM =====

=== Repair ===

  time badblocks -sv /dev/mmcblk0p2 -o mmcblk0p2.log                                #Checking for bad blocks in read-only mode and write output to "mmcblk0p2.log"
  badblocks -s -o /home/stream/badblocks.txt /dev/sda1 
  badblocks -n -v /dev/mmcblk0
  fsck /dev/hda2
  fsck.ext3 -a -CO /dev/sdx
  fsck.ext4 -v -f -c /dev/sda1                                                      #Checking for bad blocks
  e2fsck -f -y -v /dev/hda1	
  e2fsck -f /dev/sdb1
  
Force run "fsck" at reboot:  
  shutdown -F -r now
  
superblock backups are shown with (replace "xxx" with partion and id):

  mke2fs -n /dev/sdx
  
Output:
<code>
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208
</code>

Replacing block_number with the first backup superblock.

  e2fsck -b block_number /dev/xxx
  
=== smartmontools ===

  apt-get install smartmontools                    #Install smartmontools                    
  smartctl -a /dev/sda                             #Status
  smartctl -A /dev/sda                             #Status/ Attributes - check "Current_Pending_Sector". 
**Note: Check "Current_Pending_Sector". Value 0 means all sectors ok, so the disk is healthy!**
  smartctl -t long /dev/sda                        #Status
  smartctl -t long /dev/sda                        #Check Status disk /dev/sda
  
===nvme===

  apt-get install nvme-cli
  nvme smart-log /dev/nvme0n1                      
  
=== Useful Commands ===

  /sbin/blkid                                      #Show Harddisk/ Partition Information such as Label, UUID, Filesystem
  e2label /dev/sdxx mylabel                        #Change Label