# Boot u issue with Intel® NUC tutorial

**URL:** <https://hub.mender.io/t/boot-u-issue-with-intel-nuc-tutorial/2232>\
**Category:** General Discussions\
**Tags:** yocto\
**Created:** [July 24, 2020, 3:40pm UTC](https://hub.mender.io/t/boot-u-issue-with-intel-nuc-tutorial/2232 "2020-07-24T15:40:20Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![anishmonachan](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/anishmonachan/32/802_2.png) [@anishmonachan](https://hub.mender.io/u/anishmonachan)\
**Post date:** [July 24, 2020, 3:40pm UTC](https://hub.mender.io/t/boot-u-issue-with-intel-nuc-tutorial/2232/1 "2020-07-24T15:40:20Z")

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Hello,  
I have been trying to install a yocto image with mender using the NUC tutorial given.  
The image is built successfully and the image boot fails and falling into to grub screen with an error message` 'invalid sector size 65535'` . I’m using ‘warrior’ branch.

can someone explain me what is this issue?

in another case with my custom image, the boot stucks with a message `'waiting for root device /dev/mmcblkp2'`

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**Author:** ![drewmoseley](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/drewmoseley/32/47_2.png) [@drewmoseley](https://hub.mender.io/u/drewmoseley)\
**Post date:** [July 24, 2020, 4:09pm UTC](https://hub.mender.io/t/boot-u-issue-with-intel-nuc-tutorial/2232/2 "2020-07-24T16:09:56Z")

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It looks like your setting for MENDER\_STORAGE\_DEVICE is incorrect. It should probably be set to “/dev/mmcblk0” but it seems to be missing the 0. Also, depending on the actual storage media in your system, that may change to /dev/sda or some other. The best way to figure it out is to boot off of USB and use the lsblk command.

Drew

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**Author:** ![dellgreen](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/dellgreen/32/85_2.png) [@dellgreen](https://hub.mender.io/u/dellgreen)\
**Post date:** [July 24, 2020, 4:37pm UTC](https://hub.mender.io/t/boot-u-issue-with-intel-nuc-tutorial/2232/3 "2020-07-24T16:37:33Z")

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depending upon what version yocto you are using and if your using grub, you might want to consider PARTUUID support which looks like is was added to meta-mender in Thud if you want to side-step the issue and not be concerned with kernel bus named devices.

[https://docs.mender.io/hosted/artifacts/yocto-project/image-configuration/features](https://docs.mender.io/hosted/artifacts/yocto-project/image-configuration/features)

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**Author:** ![anishmonachan](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/anishmonachan/32/802_2.png) [@anishmonachan](https://hub.mender.io/u/anishmonachan)\
**Post date:** [July 27, 2020, 9:07am UTC](https://hub.mender.io/t/boot-u-issue-with-intel-nuc-tutorial/2232/4 "2020-07-27T09:07:51Z")

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Hey Drew,  
`MENDER_STORAGE_DEVICE` is set to `/dev/sda`. It boots up now.  
Thank you very much.

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**Author:** ![anishmonachan](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/anishmonachan/32/802_2.png) [@anishmonachan](https://hub.mender.io/u/anishmonachan)\
**Post date:** [July 27, 2020, 9:08am UTC](https://hub.mender.io/t/boot-u-issue-with-intel-nuc-tutorial/2232/5 "2020-07-27T09:08:48Z")

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Hi Dellgreen,  
I gonna try this solution too and will update the post with the result.  
Thank you very much!