Dm Initialization Is Not Ready Best -
This is the most common scenario. During the initramfs (initial RAM filesystem) phase of booting, the system tries to mount the root filesystem. If the kernel tries to mount a Logical Volume before the Device Mapper kernel module ( dm_mod ) is fully loaded and initialized, you will see this error. This is a "race condition"—the system is running faster than the software can keep up.
If this error pops up while trying to launch an older game or a specialized piece of software, try these steps: dm initialization is not ready
To stop the error from recurring: