# Issue while launching binary executable:px4

**URL:** <https://discuss.px4.io/t/issue-while-launching-binary-executable-px4/37952>\
**Category:** PX4 Autopilot\
**Created:** [April 26, 2024, 7:40am UTC](https://discuss.px4.io/t/issue-while-launching-binary-executable-px4/37952 "2024-04-26T07:40:41Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Adityashah1998](https://discuss.px4.io/letter_avatar_proxy/v4/letter/a/ed8c4c/32.png) [@Adityashah1998](https://discuss.px4.io/u/Adityashah1998)\
**Post date:** [April 26, 2024, 7:40am UTC](https://discuss.px4.io/t/issue-while-launching-binary-executable-px4/37952/1 "2024-04-26T07:40:41Z")

</div>

I am trying to run the binary executable under: '~/build/px4\_sitl\_default/bin/px4`

But it is always starting SIH and not “INFO [init] jMAVSim simulator”.

I have observed if I have executed this “make px4\_sitl jmavsim” and then trying to execute the above binaries, then open SITL, but if I have executed, “make px4\_sitl sihsim\_quadx” before, then it opens SIH mode.

Can you tell me how can I have a better control over this?