I had big problems with my particular storage setup and the Redstone update.
My storage setup is:
NVME Slot (M2) Samsung 950 Pro (this is the OS disc)
Sata Slot (M2) Liteon CV1
Sata Slot WD 2 TB Sata HDD
Installation always stops after reboot. I tried to adjust all settings like Raid and AHCI in Bios, checked all drivers.
Always Screen with repair options after reboot.
So I did backup of the Samsung. Saved Data from Liteon to another disc and restored Samsung Backup to the Liteon.
Only way to do the backup was to put the liteon to the NVME (M2) slot, doing update succesfully and migrigating back the hole thing to the Samsung (urgh!!!).
Redstone update itself is in my opinion .... I try hard not to say unkind things here, ... no, everybody should try by himself.