SATA connection stops system startup
SATA connection stops system startup
One SATA connection on my HP z840 workstation blocks the system from starting when a device is connected. Any storage device—SSD, HDD, or SSD—causes the computer to freeze before launching Windows. It doesn’t completely lock up; a forced shutdown via unplugging or pressing the power button resolves the issue. However, after initializing all devices, it stops booting entirely, which is likely due to the LSI SAS controller on my Seagate WarpDrive. Interestingly, connecting another drive after booting works without problems. The controller details suggest this is the second SATA port in the chipset. In BIOS, booting from this port is disabled and set to eSATA mode for hot swapping. Could the cable be faulty? I don’t have spare cables, but it seems unlikely since the connection functions post-boot. Or am I running out of available device addresses? With numerous drives installed, my BIOS is legacy, secure boot is off, and all specs are listed. Full details: HP z840 Workstation – latest BIOS 2x Xeon e5-2697v4 8x8GB DDR4-2133 RTX A4500, Windows 10 Pro, Secure boot, UEFI, TPM disabled. Drives: HP Z Turbo Drive G2 256GB (PCIe, boot), HP NVMe 1.6TB (PCIe), 4x Seagate Savvio, 2x HGST Ultrastar, 1x Seagate Cheetah (SAS #1), Seagate Nytro WarpDrive (SAS #2), HGST Ultrastar, optical drive (SATA #1). No issues reported.