BOOT Colibri iMX6S 256MB IT 1.1B

The “FlashDIsk2” issue related to asynchronous driver loading. Please see description here.

Could you check if your modules have the same eMMC chip or not?
Version 1.8 has fix for occasional Filesystem corruption problem when using Trim feature
Otherwise you should disable Trim.

[HKEY_LOCAL_MACHINE\Drivers\SDCARD\ClientDrivers\Class\MMC_Class\High_Capacity] EnableTrim=dword:0