Narrow the problem through BIOS/UEFI detection, disk-management state, slot/protocol compatibility and safe reseating checks.
Results are for information and preliminary estimation. For critical technical work, manufacturer data, local codes and qualified professional review take precedence.
Assess data-loss risk first. If the drive contains important data, avoid initialization, formatting, secure erase or firmware actions before choosing a recovery strategy.
Example: If the drive appears in BIOS but has no OS drive letter, partition or mount-state issues become more likely.
Computer and network tools provide practical capacity planning. Vendor limits, protocol overhead, codecs and real connection quality can move results away from theoretical values.
A wrong action can put existing partition information at risk; protect important data before changing disk metadata.
No. Some slots support only SATA or only PCIe/NVMe and can also restrict physical lengths.
Tell us if a calculation is unclear, incomplete or appears incorrect.