# Kernel panic - PYNQ Z1

**URL:** <https://discuss.pynq.io/t/kernel-panic-pynq-z1/3581>\
**Category:** Support\
**Created:** [January 24, 2022, 7:24am UTC](https://discuss.pynq.io/t/kernel-panic-pynq-z1/3581 "2022-01-24T07:24:08Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Sahan\_Wijethunga](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/sahan_wijethunga/32/2752_2.png) [@Sahan\_Wijethunga](https://discuss.pynq.io/u/Sahan_Wijethunga)\
**Post date:** [January 24, 2022, 7:24am UTC](https://discuss.pynq.io/t/kernel-panic-pynq-z1/3581/1 "2022-01-24T07:24:08Z")

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I have a new PYNQ Z1 board. I tried to boot it with micro sd with the sd image of v2.7. But It gives the following error message.

Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(176,2)

The same issue occur when it tried with sd image v2.1

Any help on this matter is highly appriciated

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**Author:** ![stf](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/stf/32/2724_2.png) [@stf](https://discuss.pynq.io/u/stf)\
**Post date:** [January 24, 2022, 9:51am UTC](https://discuss.pynq.io/t/kernel-panic-pynq-z1/3581/2 "2022-01-24T09:51:28Z")

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Hello,

Have you only tried this on one SD card? Do you have any other SD cards that you can try?

All the best,  
Shane

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**Author:** ![Sahan\_Wijethunga](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/sahan_wijethunga/32/2752_2.png) [@Sahan\_Wijethunga](https://discuss.pynq.io/u/Sahan_Wijethunga)\
**Post date:** [January 24, 2022, 10:03am UTC](https://discuss.pynq.io/t/kernel-panic-pynq-z1/3581/3 "2022-01-24T10:03:03Z")

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Yes, I only tried on one SD card. Currently I do not have any extra SD cards

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**Author:** ![stf](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/stf/32/2724_2.png) [@stf](https://discuss.pynq.io/u/stf)\
**Post date:** [January 24, 2022, 3:08pm UTC](https://discuss.pynq.io/t/kernel-panic-pynq-z1/3581/4 "2022-01-24T15:08:15Z")

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Can you talk me though how you imaged the SD card?

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<div class="post-metadata">

**Author:** ![Sahan\_Wijethunga](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/sahan_wijethunga/32/2752_2.png) [@Sahan\_Wijethunga](https://discuss.pynq.io/u/Sahan_Wijethunga)\
**Post date:** [January 25, 2022, 4:06am UTC](https://discuss.pynq.io/t/kernel-panic-pynq-z1/3581/5 "2022-01-25T04:06:24Z")

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I used win32disk imager to image my sd card. I tried with v2.5 sd image. It works fine now.