[SOLVED] Rebooting failure after Mageia 4 upgrade

I used mgaonline to successfully upgrade from Mageia 3 to Mageia 4. After the upgrade completed I was told to reboot. i did so, chose the Mageia 4 kernel, but ended up dropping down to a command line prompt. The messages said:
I have of course a backup of Mageia 3 I can restore before I try again.
Where do I go from here in attempting to upgrade from Mageia 3 to Mageia 4 and finding out why it is not successful ?
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dracut Warning: Cancelling resume operation. Device not found.
dracut Warning: Could not boot.
dracut Warning: /dev/resume does not exist.
Generating "/run/initramfs/rdsosreport.txt"
I have of course a backup of Mageia 3 I can restore before I try again.
Where do I go from here in attempting to upgrade from Mageia 3 to Mageia 4 and finding out why it is not successful ?