No, never manipulated hd0 partitions, and the fact the 12-15GB recovery is missing suggests to me on this model there is no F9 functionality....
Pressing F9 as fast as I can during boot nothing happens, and I expect this to be a BIOS implemented feature since I should have seen at least a BSOD saying it can't find the recovery partition to boot from, if present. Maybe was removed with latest BIOS? Looks like the feature and SW are totally missing on my G752VY. Not very important anwyay (I can create a Recovery Disk/Drive from Windows or use Win10 ISO...), just curiosity...
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ASUS ROG Strix GL703GS, GTX 1070 8GB, 32GB RAM, 1920x1080 144Hz G-Sync laptop screen, external monitor UWQHD 3440x1440 Mi Monitor, NVMe 4x, 8BitDo Arcade Stick, EasySMX X10 controller, ROG Strix Carry mouse