S4100–ON Series S4128F-ON, S4148F-ON, and S4148FE Installation Guide November 2017

USB storage does not automatically mount. The supported file system is FAT. To use USB storage, first mount the device using the following steps:

1. Create a mount directory for the USB. ONIE:/ # mkdir /mnt/usb
2. View the fixed disks using fdisk. ONIE:/mnt # fdisk -l For internal storage:

   Disk /dev/sda: 15.8 GB, 15829303296 bytes
                                       255 heads, 63 sectors/track, 1924 cylinders
                                       Units = cylinders of 16065 * 512 = 8225280 bytes
                                       
                                       Device Boot      Start      End      Blocks  Id System
                                       /dev/sda1               1      1925    15458303+ ee EFI GPT
                                       
                                    

   For USB storage:

   Disk /dev/sdb: 30.9 GB, 30942946304 bytes
                                       64 heads, 32 sectors/track, 29509 cylinders
                                       Units = cylinders of 2048 * 512 = 1048576 bytes
                                       
                                       Device Boot      Start      End      Blocks  Id System
                                       
                                    

3. Mount the device /dev/sdb to the /mnt/usb directory. ONIE:/ # mount -t vfat /dev/sdb /mnt/usb
   • NOTE: The following message displays if the /mnt/usb directory is missing: mount: mounting /dev/sdb on /mnt/usb failed: No such file or directory .
   • NOTE: The following message displays if the USB device is not seen: mount: mounting /dev/sdb on /mnt/usb failed: No such device or address .
4. Add a device to the file systems table using the fstab command and mount the file systems—recommended. ONIE:/ # vi /etc/fstab

   # FSTAB entry for the ONIE-BOOT partition mounted on /boot
                                       LABEL=ONIE-BOOT /mnt/onie-boot ext4  defaults,rw,errors=remount-ro 0  1
                                       /dev/sdb        /mnt/usb       vfat  defaults                      0  1
                                       
                                       ONIE:/ # mount -a