## Purpose
There are a few steps you have to take when upgrading ProxmoxVE from 8.4.1+ to 9.0+.  The process is fairly straightforward, so just follow the instructions seen below.

!!! warning "Perform `pve8to9` Readiness Check"
    It's critical that you run the `pve8to9` command to ensure that your ProxmoxVE server meets all of the requirements and doesn't have any failures or potentially server-breaking warnings.  If the `pve8to9` command is unknown, then run `apt update && apt dist-upgrade` in the shell then try again.  Warnings should be addressed ad-hoc, but *CPU Microcode warnings can be safely ignored*.

    **Example pve8to9 Summary Output**:
    ```sh
    = SUMMARY =

    TOTAL:    48
    PASSED:   39
    SKIPPED:  8
    WARNINGS: 1
    FAILURES: 0
    ```