Blocking Mass Storage in Linux

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Disabling Mass Storage in Linux-Based Distros

  1. Unmount the USB device if it is currently connected: 
    [root@centos ~]# umount /dev/sdb

    Note: The device name may vary in your case.

  2. Remove the USB storage module: 
    [root@centos ~]# modprobe -r usb_storage
  3. Edit /etc/modprobe.d/blacklist.conf and add the following line: 
    blacklist usb_storage

    Save the file.

Now, when a USB flash drive is connected, the hotplug scripts will not load it automatically.

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