NAME

umass — USB Mass Storage Devices driver

SYNOPSIS

To compile this driver into the kernel, place the following line in your kernel configuration file:
device scbus
device usb
device umass
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): 
umass_load="YES"

DESCRIPTION

The umass driver provides support for Mass Storage devices that attach to the USB port.
To use the umass driver, usb(4) and one of uhci(4) or ohci(4) or ehci(4) or xhci(4) must be configured in the kernel. Additionally, since umass uses the SCSI subsystem and sometimes acts as a SCSI device, it requires da(4) and scbus(4) to be included in the kernel.

EXAMPLES

device umass 
device scbus 
device da 
device pass
Add the umass driver to the kernel. 
camcontrol rescan 0:0:0 
camcontrol rescan 0:0:1 
camcontrol rescan 0:0:2 
camcontrol rescan 0:0:3
Rescan all slots on a multi-slot flash reader, where the slots map to separate LUNs on a single SCSI ID. Typically only the first slot will be enabled at boot time. This assumes that the flash reader is the first SCSI bus in the system and has 4 slots.

SEE ALSO

cfumass(4), ehci(4), ohci(4), uhci(4), usb(4), xhci(4), camcontrol(8)

AUTHORS

The umass driver was written by MAEKAWA Masahide <[email protected]> and Nick Hibma <[email protected]>.
This manual page was written by Nick Hibma <[email protected]>.

Recommended readings

Pages related to umass you should read also:
camcontrol(8) cfumass(4) da(4) ehci(4) loader.conf(5) ohci(4) scbus(4) uhci(4) usb(4) xhci(4)

Questions & Answers

Helpful answers and articles about umass you may found on these sites:
Stack Overflow Server Fault Super User Unix & Linux Ask Ubuntu Network Engineering DevOps Raspberry Pi Webmasters Google Search