# MOBOTIX Bridge HDD Fails To Boot **URL:** \ **Category:** MOBOTIX CLOUD\ **Tags:** troubleshooting, cloud, hdd, bridge\ **Created:** [March 6, 2023, 9:16am UTC](https://community.mobotix.com/t/mobotix-bridge-hdd-fails-to-boot/6519 "2023-03-06T09:16:17Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![MxAhmedY](https://avatars.discourse-cdn.com/v4/letter/m/858c86/32.png) [@MxAhmedY](https://community.mobotix.com/u/MxAhmedY)\ **Post date:** [March 6, 2023, 9:16am UTC](https://community.mobotix.com/t/mobotix-bridge-hdd-fails-to-boot/6519/1 "2023-03-06T09:16:17Z")
When It happens while booting MOBOTIX Bridge unit and you see the below message… EFI Shell Version x.x Current Running mode x.x.x map: Cannot find required map name. ![image](https://canada1.discourse-cdn.com/flex030/uploads/mobotix/original/2X/3/39f277b77da3a5945615e06ebc5b98c65db517c8.jpeg) **It means the unit is booting to EFI Shell, which refers to the bridge does not recognize the HDD or the boot partition.** **It happens because the HDD failed in the bridge.** Please contact [suppor@mobotix.com](mailto:suppor@mobotix.com) and provide them with the below details and they will assist with initiating the RMA process for the bridge… 1. Screenshot showing the same fault. 2. Bridge serial number.