Problem
A workstation's CMOS reset restores default storage settings and disables a previously configured RAID or HBA mode after maintenance.
Solution
Root Cause / Diagnostic:
Clearing motherboard CMOS (via battery replacement or BIOS reset) restores factory default settings, which commonly defaults SATA/NVMe controller mode from RAID/AHCI/VMD to standard consumer defaults. If internal project scratch disks or system drives relied on a chipset RAID or specific PCIe bifucation/VMD mapping, the operating system fails to boot or reports raw, unformatted drives.
Actionable Fix:
1. Storage Controller & Bifurcation Reconfiguration: Enter UEFI BIOS immediately following any reset, re-enable specific storage controller modes (e.g., Intel VMD, SATA AHCI/RAID, or PCIe Bifurcation x4x4x4x4 for M.2 add-in cards), and restore custom boot order.
2. BIOS Profile Export to USB: Save a verified, operational BIOS profile backup to a dedicated, physically labeled USB flash drive kept inside the workstation chassis.
3. RAID Health & Partition Audit: Boot into the OS and inspect Disk Management / Disk Utility to confirm that all software and hardware RAID volumes mount with healthy file systems.
Pro Tip:
Always save your BIOS settings to a USB drive before doing PC maintenance; a dead CMOS battery can reset your motherboard to defaults, breaking your multi-SSD RAID array and scaring you into thinking your footage was wiped.
Clearing motherboard CMOS (via battery replacement or BIOS reset) restores factory default settings, which commonly defaults SATA/NVMe controller mode from RAID/AHCI/VMD to standard consumer defaults. If internal project scratch disks or system drives relied on a chipset RAID or specific PCIe bifucation/VMD mapping, the operating system fails to boot or reports raw, unformatted drives.
Actionable Fix:
1. Storage Controller & Bifurcation Reconfiguration: Enter UEFI BIOS immediately following any reset, re-enable specific storage controller modes (e.g., Intel VMD, SATA AHCI/RAID, or PCIe Bifurcation x4x4x4x4 for M.2 add-in cards), and restore custom boot order.
2. BIOS Profile Export to USB: Save a verified, operational BIOS profile backup to a dedicated, physically labeled USB flash drive kept inside the workstation chassis.
3. RAID Health & Partition Audit: Boot into the OS and inspect Disk Management / Disk Utility to confirm that all software and hardware RAID volumes mount with healthy file systems.
Pro Tip:
Always save your BIOS settings to a USB drive before doing PC maintenance; a dead CMOS battery can reset your motherboard to defaults, breaking your multi-SSD RAID array and scaring you into thinking your footage was wiped.