2100 HDD0 initialization error 1

2100 HDD0 initialization error 1 BIOS Fix

I’ve noticed an issue on a few IBM/Lenovo Thinkpads. When you install an SSD drive, a reboot or restart from the OS does not work. When you reboot, instead opening the boot partition, it throws this error:

2100 HDD0 initialization error 1

Other than avoiding reboot and using shutdown instead, the only solution I’ve found is this:

  1. Shutdown the laptop then power on to boot.
  2. During the “Thinkpad” splash screen, Press F1 on your keyboard to enter the BIOS.
  3. Select Config > Serial ATA (SATA)
  4. Change the SATA Controller Mode Option from AHCI to Compatibility mode.
  5. reboot

Reboot from OS should now work.

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