Before you start, make sure you have the following:
| Problem | Likely Cause | Solution | |---------|--------------|----------| | Drive not in BIOS | Loose cable, disabled SATA port | Reseat cables; enable SATA port in BIOS | | Drive not in Disk Management | Not initialized; driver issue | Check BIOS; update storage controller driver | | “Drive is offline” in Disk Management | Signature collision (cloned drive) | Right-click disk → Online | | Cannot format to NTFS | Bad sectors; RAW file system | Run chkdsk /f ; use DiskPart clean | | M.2 drive not detected | Wrong M.2 slot type (SATA vs. NVMe) | Check motherboard manual; use correct slot | how to install a hard drive windows 10