# WP76xx Disable UBIFS in R17 Yocto Build

**URL:** <https://forum.legato.io/t/wp76xx-disable-ubifs-in-r17-yocto-build/6585>\
**Category:** Legato Linux distribution (Yocto project)\
**Created:** [September 8, 2023, 8:54am UTC](https://forum.legato.io/t/wp76xx-disable-ubifs-in-r17-yocto-build/6585 "2023-09-08T08:54:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sharath\_n](https://avatars.discourse-cdn.com/v4/letter/s/ee7513/32.png) [@sharath\_n](https://forum.legato.io/u/sharath_n)\
**Post date:** [September 8, 2023, 8:54am UTC](https://forum.legato.io/t/wp76xx-disable-ubifs-in-r17-yocto-build/6585/1 "2023-09-08T08:54:58Z")

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Hi, I am trying to upgrade the WP76xx Kernel to Latest R17 Release from Sierra Wireless from R16\_01. Referring to this [https://forum.legato.io/t/flash-size-wp7607/380](https://forum.legato.io/t/flash-size-wp7607/380) post, I had a similar issue and solved rootfs file size issue by disabling UBIFS by making the following changes (See the Pic)

 ![image](https://us1.discourse-cdn.com/flex019/uploads/legato1/original/2X/f/fbade558c6db13724266a534d847b1410ebf7e82.png)

Now I am trying the same changes in the R17 Release, however, after this change, I am facing the yocto build error. (See pic)

 ![image](https://us1.discourse-cdn.com/flex019/uploads/legato1/original/2X/7/76d580e5c52e896ddbc8c4c251340b8233ba46e5.png)

I’m not sure what changed in the R17 Release and How to fix this issue.

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**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\
**Post date:** [September 8, 2023, 11:16am UTC](https://forum.legato.io/t/wp76xx-disable-ubifs-in-r17-yocto-build/6585/2 "2023-09-08T11:16:06Z")

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Why did you remove ubifs?

no problem is found to embed helloworld recipe with “`for rootfs_type in squashfs; do` ” in mdm9x28-image.inc:

> **[WP76xx How to Disable UBIFS in R17 Yocto Build](https://forum.sierrawireless.com/t/wp76xx-how-to-disable-ubifs-in-r17-yocto-build/30579/11)**
>
> You mean you just modify mdm9x28-image.inc? Btw, how do you add files?