Recent changes to 429: "Box" is an unknown partition device. Program terminated!.

#429 "Box" is an unknown partition device. Program terminated!.

2026-04-20T11:49:40.808000Z

Thanks for confirming that.

#429 "Box" is an unknown partition device. Program terminated!.

2026-04-20T11:39:48.588000Z

Does work here - no more "Box" errors ;-)

Good job! Thank you!

#429 "Box" is an unknown partition device. Program terminated!.

2026-04-19T02:39:14.895000Z

@Andy
Great. Thanks for confirming it's fixed in Clonezilla live 3.3.2-22.

#429 "Box" is an unknown partition device. Program terminated!.

2026-04-18T19:48:39.023000Z

Hi @steven_shiau

I had this exact issue trying to back up a partition on a E14 Lenovo Thinkpad.

The stick was built using YUMI-exFAT-1.0.3.7 which uses Ventoy 1.1.11.

I had Clonezilla live 3.3.1-35 in my ISOs folder and got the "Box" error at the same ctrl-c/partition enumeration point as @Bodenseematze describes.

I copied the Clonezilla 3.3.2-22 iso to the stick and tried again and confirm that the issue is fixed.

Thanks for your prompt work Steven!

#429 "Box" is an unknown partition device. Program terminated!.

2026-04-18T09:55:43.479000Z

For those using Ventoy 1.1.11 to create Clonezilla live USB stick, please update your Clonezilla live iso >= 3.3.2-22 or 20260418-*:
https://clonezilla.org/downloads.php
We have implemented a mechanism to avoid the issue.
Let us know the resulst. Thanks.

#429 "Box" is an unknown partition device. Program terminated!.

2026-04-17T08:51:23.690000Z

here are the outputs of the above commands for a Ventoy v1.1.10 stick

#429 "Box" is an unknown partition device. Program terminated!.

2026-04-17T08:42:03.165000Z

When I have a stick with Ventoy 1.1.11, boot the Clonezilla ISO with to RAM and remove the USB stick before starting clonezilla, the error is NOT present.

With a Ventoy 1.1.10 stick and booting Clonezilla without to RAM option the error also is NOT present.

So there must be something with Ventoy which changed between v1.1.10 and v1.1.11 which leads to that error...

#429 "Box" is an unknown partition device. Program terminated!.

2026-04-17T07:49:48.266000Z

I forgot to mention that when you try the 1st method (toram), after you see the language selection, remove the USB stick then continue to do the clonezilla TUI.
Please let me know if anything different.
Thanks.

#429 "Box" is an unknown partition device. Program terminated!.

2026-04-17T06:48:09.889000Z

I first booted the (Ventoy) USB-Stick, started the standard clonezilla and selected the "800x600 (to RAM)" variant.
Same error message...

Then I reformatted my USB-Stick (still GPT), formatted it with FAT32 and put the Clonezilla.zip contents to it.
After booting it and selecting "1024x768" (not to RAM) the error vanished and everything works :-)

I will do another retest with ventoy 1.1.10 and post results here...

#429 "Box" is an unknown partition device. Program terminated!.

2026-04-16T17:04:29.741000Z

I'm sorry, it turned out to be a Ventoy issue! I downgraded to Ventoy 1.1.10 and now everything works again. I realized it when I had similar problems with the Ubuntu 24.04.4 installer running from the Ventoy stick.