Junos Copy files from USB Stick to Juniper Switch/Router

The following procedure allow users to mount a USB device on EX/J/SRX/MX devices.  This can be helpful if network connectivity is unavailable and you need to copy files to or from the device. 

1. Enter the shell as root:

   user@switch> start shell user root
   Password:
   root@switch% 
   

2. Before inserting the USB device, perform the following:

   root@% ls /dev/da*
   /dev/da0 /dev/da0s1c /dev/da0s2a /dev/da0s3 /dev/da0s3e
   /dev/da0s1 /dev/da0s1f /dev/da0s2c /dev/da0s3c
   /dev/da0s1a /dev/da0s2 /dev/da0s2f /dev/da0s3d
   

3. Insert the USB drive in the USB port. The following output will be displayed:

   root@% umass1: TOSHIBA TransMemory, rev 2.00/1.00, addr 3
   da2 at umass-sim1 bus 1 target 0 lun 0
   da2: <TOSHIBA TransMemory 5.00> Removable Direct Access SCSI-0 device 
   da2: 40.000MB/s transfers
   da2: 983MB (2013184 512 byte sectors: 64H 32S/T 983C)
   
   root@% ls /dev/da*
   /dev/da0 /dev/da0s1c /dev/da0s2a /dev/da0s3 /dev/da0s3e
   /dev/da0s1 /dev/da0s1f /dev/da0s2c /dev/da0s3c /dev/da2
   /dev/da0s1a /dev/da0s2 /dev/da0s2f /dev/da0s3d /dev/da2s1
   

   Note: '/dev/da2s1' is the USB drive.


4. Create a directory for the USB drive to mount to:

   root@% mkdir /var/tmp/usb

5. Mount the USB drive to the /var/tmp/usb directory:

   root@% mount_msdosfs /dev/da2s1 /var/tmp/usb
   root@% ls /var/tmp/usb
   images.tgz
   

   Note: 'ls /var/tmp/usb' will show all the files in the USB drive.


6. Copy any of the USB files to the /var/tmp/usb directory:

   root@% cp /var/tmp/usb/images.tgz /var/tmp
   root@% ls /var/tmp
   images.tgz

   The images.tgz file from the USB is successfully copied to the /var/tmp directory.


7. Now unmount the USB drive after the file is completely copied:

   root@% umount /var/tmp/usb
   root@% umass1: at uhub0 port 1 (addr 3) disconnected
   (da1:umass-sim1:1:0:0): lost device
   (da1:umass-sim1:1:0:0): removing device entry
   umass1: detached