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I understand that Intel® RST created a recovery volume on your Acer Predator 15. I would like to provide more information about this issue.
To resolve this problem, you may need to mark the drive as non-raid in BIOS to delete the raid volume and then use it in Windows as desired.
Please follow these steps:
-During boot, use CTRL-I to enter the RST BIOS Extension.
-Mark the drive as "Non-RAID".
-Reboot your system.
It is worth mentioning that you should back up your data if needed. Also, this key combination may have been disabled by your computer manufacturer. If you are not able to enter the RAID BIOS extension, please contact your system manufacturer for more information about it.
I hope you find this information helpful.
Were you able to mark the drive as non-raid in BIOS to delete the recovery volume?
If you still need any assistance, we will be glad to help you.