What's OnTrack DM6 Aux3 partition?

Andre Bella <scancool@...>

I'm using yocto to create a *.sdcard image, and when I transfer to the sd card it creates a partition call OnTrack DM6 Aux3, what is that? and how it can be read?

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048       10239        4096   53  OnTrack DM6 Aux3
/dev/sdb2           10240     6639615     3314688   83  Linux

I'm asking cause I will like to put a new uImage there,

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