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Dell PowerEdge RAID Controller S140 User’s Guide

Controller mode is set incorrectly at system setup

  1. In the system startup, when the Dell Power-On Self-Test (POST) screen is displayed, press F2 to enter the system BIOS screen.
  2. Scroll to SATA Settings. Press Enter and ensure that the SATA Controller is set to RAID mode.
    WARNING:While switching from RAID Mode to ATA Mode or AHCI Mode, there may be data loss.

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