# Mkdir cant create directory /sys/bus/usb/drivers/rtl8192cu

**URL:** https://forum.legato.io/t/mkdir-cant-create-directory-sys-bus-usb-drivers-rtl8192cu/183
**Category:** Legato Application Framework
**Created:** [January 27, 2016, 1:46pm UTC](https://forum.legato.io/t/mkdir-cant-create-directory-sys-bus-usb-drivers-rtl8192cu/183 "2016-01-27T13:46:08Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Vkuehne](https://avatars.discourse-cdn.com/v4/letter/v/8491ac/32.png) [@Vkuehne](https://forum.legato.io/u/Vkuehne)
#### Post date: [January 27, 2016, 1:46pm UTC](https://forum.legato.io/t/mkdir-cant-create-directory-sys-bus-usb-drivers-rtl8192cu/183/1 "2016-01-27T13:46:08Z")

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I tried to create a new dirctory named rtl8192cu, I got the message that the opeation not permitted

root@swi-mdm9x15:~# mkdir /sys/bus/usb/drivers/rtl8192cu  
mkdir: can’t create directory ‘/sys/bus/usb/drivers/rtl8192cu’: Operation not permitted  
root@swi-mdm9x15:~#

What is wrong?

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### Author: ![JayM2M](https://avatars.discourse-cdn.com/v4/letter/j/3d9bf3/32.png) [@JayM2M](https://forum.legato.io/u/JayM2M)
#### Post date: [January 28, 2016, 11:19am UTC](https://forum.legato.io/t/mkdir-cant-create-directory-sys-bus-usb-drivers-rtl8192cu/183/2 "2016-01-28T11:19:26Z")

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Hi,

The rootfs flash partition is read-only, so you cannot write on it directly.

Instead, use Yocto in order to rebuild kernel/rootfs images with all your customization.

Jay