VMware created/used a coredump partition by itself, on the USB boot disk.
But then, by unactivating that partition, I was able to recreate a coredump partition on the disk from the GUI and then recreate a storage.
Now, this is not clean as initially (some small holes and strangely coredump at the end) but I would say the problem is solved:
# partedUtil getptbl /dev/disks/naa.600605b009a647b01c5ed73926b7ede1
gpt
1215155 255 63 19521474560
1 63 8386622 EBD0A0A2B9E5443387C068B6B72699C7 linuxNative 0
3 8388608 19521267711 AA31E02A400F11DB9590000C2911D1B8 vmfs 0
2 19521267712 19521472511 9D27538040AD11DBBF97000C2911D1B8 vmkDiagnostic 0
Denis
