# Delta apply fail with "xdelta3: target window checksum mismatch: XD3\_INVALID\_INPUT"

**URL:** https://hub.mender.io/t/delta-apply-fail-with-xdelta3-target-window-checksum-mismatch-xd3-invalid-input/1805
**Category:** General Discussions
**Created:** [April 20, 2020, 7:42pm UTC](https://hub.mender.io/t/delta-apply-fail-with-xdelta3-target-window-checksum-mismatch-xd3-invalid-input/1805 "2020-04-20T19:42:32Z")
**Posts on this page:** 1
**Showing post:** 3

<div class="post-metadata">

### Author: ![malveo](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/malveo/32/704_2.png) [@malveo](https://hub.mender.io/u/malveo)
#### Post date: [April 22, 2020, 2:50pm UTC](https://hub.mender.io/t/delta-apply-fail-with-xdelta3-target-window-checksum-mismatch-xd3-invalid-input/1805/3 "2020-04-22T14:50:28Z")

</div>

Hi Mirzak,

you’re correct, the checksum returned by `mender-artifact read` don’t match with the sha256 of the `/dev/hda2` partition (I’m on qemu) I’m investigation why at boot something on the filesystem change (I have “read-only-rootfs” feature enable), and I confirm that `/dev/hda3` have the correct checksum. I will keep you posted.

Thank you,  
Mauro

---

_[View the full topic](https://hub.mender.io/t/delta-apply-fail-with-xdelta3-target-window-checksum-mismatch-xd3-invalid-input/1805)._