I recently acquired a Dell Optiplex that was previously used in an office, and I'm trying to install different operating systems. However, I've run into an issue because most installations fail unless I can disable RST (Rapid Storage Technology). Unfortunately, the BIOS settings, including RST, are locked behind a password, and I have no way to contact the previous company for help. I've tried removing the CMOS battery, checking the manual, and even attempting to brute-force the password, but nothing seems to work. Any suggestions on how I can bypass or reset the BIOS password?
1 Answer
I've had similar issues with older Optiplex systems. If the BIOS admin password is set, Dell usually prevents changes to SATA mode, so clearing the CMOS won't work since the password is saved in NVRAM. If you're still under Dell support, you can reach out to them with your service tag to request a master unlock code. If not, you might want to check if the previous company's IT department documented the BIOS password somewhere, though that's a long shot. You could also try installing an OS that has drivers for Intel RST built-in to avoid needing to switch to AHCI during installation. Otherwise, getting the BIOS unlocked through Dell is the most reliable way forward.

I'll try contacting Dell, thank you!