Linux auto remount after reboot

edit /etc/fstab
add blow entry(only for ext):

/dev/sdb1 /media/disk2 ext2 defaults 0 2

1. /dev/sdb1 device: /dev location or uuid.
2. /media/disk2 mount point.
3. ext2 file system type: get it from file -s /dev/sdb1 command.
4. defaults options.
5. 0 dump.
6. 1 pass num.

more detail refer to ubuntu Fstab