# Can't create Mender images for Ubuntu Server x64

**URL:** https://hub.mender.io/t/cant-create-mender-images-for-ubuntu-server-x64/1897
**Category:** General Discussions
**Tags:** ubuntu
**Created:** [May 9, 2020, 12:41am UTC](https://hub.mender.io/t/cant-create-mender-images-for-ubuntu-server-x64/1897 "2020-05-09T00:41:48Z")
**Posts on this page:** 1
**Showing post:** 34

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### Author: ![marekl](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/marekl/32/643_2.png) [@marekl](https://hub.mender.io/u/marekl)
#### Post date: [June 2, 2020, 9:51pm UTC](https://hub.mender.io/t/cant-create-mender-images-for-ubuntu-server-x64/1897/34 "2020-06-02T21:51:05Z")

</div>

Hi All,

I’m working with @krystof to get a bootable Ubuntu image with `mender_convert`. I’ve been able to get an image to boot when using an Ubuntu `bionic` based `mkosi` image but not when using `focal`.

The issue seems to be that the `focal` image generated by `mkosi` contains some additional `kernel` and `initramfs` images that the `bionic` image does not.

See this excerpt of the `mender_convert` log output when running with a Ubuntu `focal` based `mkosi` image as input:

```auto
2020-06-02 01:25:22 [INFO] [mender-convert-modify] Installing Mender client and related files
2020-06-02 01:25:27 [INFO] [mender-convert-modify] Found Linux kernel image: 

	work/rootfs/boot/vmlinuz
work/rootfs/boot/vmlinuz-5.4.0-26-generic
work/rootfs/boot/vmlinuz.old

basename: extra operand 'work/rootfs/boot/vmlinuz.old'
Try 'basename --help' for more information.
2020-06-02 01:25:27 [INFO] [mender-convert-modify] Found initramfs image: 

	work/rootfs/boot/initrd.img-5.4.0-26-generic
work/rootfs/boot/initrd.img
work/rootfs/boot/initrd.img.old

basename: extra operand 'work/rootfs/boot/initrd.img.old'
Try 'basename --help' for more information.

```

It seems that when there are multiple kernel / initramfs images on the input image `mender_convert` fails silently. By that I mean that even when this output is in the `mender_convert` log it still generates an output image and returns a 0 return code. The converted image does not boot however.

For reference here are the working `mkosi` and `mender_convert` configurations.

**`mkosi` config:**

```auto
[Distribution]
Distribution=ubuntu
Release=bionic

[Output]
Format=gpt_ext4
Bootable=yes

[Partitions]
RootSize=3G

[Packages]
Packages=nano less tmux ssh dnsutils curl ethtool iproute2 isc-dhcp-client netplan.io iputils-ping ca-certificates lshw pciutils

[Validation]
Password=test

```

**`mender_convert` config:**

```auto
MENDER_STORAGE_DEVICE_BASE=/dev/sda
MENDER_DEVICE_TYPE="x86_64"
MENDER_COPY_BOOT_GAP="n"
MENDER_STORAGE_TOTAL_SIZE_MB="7168"
MENDER_BOOT_PART_SIZE_MB="256"
MENDER_DATA_PART_SIZE_MB="256"
IMAGE_ROOTFS_SIZE="-1"

```

By changing `Release=bionic` in the `mkosi` config to `Release=focal` I can reproducibly break the converted image.

---

_[View the full topic](https://hub.mender.io/t/cant-create-mender-images-for-ubuntu-server-x64/1897)._