The issue you're encountering, where after installing ESXi 7.0.3 in UEFI mode on an X-series blade and rebooting, the system boots into the UEFI shell and shows two block devices (blk0 and blk1) but no filesystem devices (fsN:), might be due to a couple of reasons.
First, it could be related to the configuration of your system or some issues with the software or hardware compatibility. To troubleshoot this problem, you could try the following:
1. Check BIOS settings: Make sure the settings on the X-series blades are correctly configured to recognize disk controllers and storage devices.
2. Verify device connections and functions: Ensure your storage devices are correctly connected to the X-series blades and are functioning properly.
3. Check ESXi image: Make sure the ESXi 7.0.3 ISO image used for the installation is valid and not corrupted. Try downloading the ISO image again from the VMware website.
4. Select the correct storage device during installation: When you're installing ESXi, ensure you're selecting the right storage device. If the installer does not detect any storage devices, you might need to load the necessary drivers for the disk controllers or storage devices.
5. Try a different ESXi version: If all else fails, you could attempt to install a different version of ESXi (e.g., ESXi 6.7) to see if the problem persists. If the issue is specific to ESXi 7.0.3, it might be a compatibility issue with the X-series blades.
However, please note that without a more direct look at your specific environment and configurations, these are just potential solutions and might not entirely address your problem. If none of these suggestions work, it may be necessary to reach out to Cisco support for further assistance.
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