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Download and install the latest UEFI BIOS update package by one of the following methods:
• Open the Vantage app to check the available update packages. If the latest UEFI BIOS update package is
available, follow the on-screen instructions to download and install the package.
• Go to
https://pcsupport.lenovo.com
instructions to download and install the latest UEFI BIOS update package.
Note: During the UEFI BIOS update process, Memory Reference Code (MRC) change might cause memory
retraining. Memory retraining is a process to initialize the memory module and run diagnostic tests for the
memory module in your computer. When memory retraining occurs, the screen can't display the progress
information and might be blank. You might see the LED indicators on ESC, F1, and F4 blinking sequentially
to indicate the progress. Do not press the power button to interrupt the process. Wait a few minutes until the
logo screen is displayed.
To know more about UEFI BIOS, visit Knowledge Base of your computer at
RAID
Redundant Array of Independent Disks (RAID) is a technology that provides increased storage functions and
reliability through redundancy. It also can improve data storage reliability and fault tolerance compared with
single-drive storage systems. Data loss resulting from a drive failure can be prevented by reconstructing
missing data from the remaining drives.
When a group of independent physical storage drives is set up to use RAID technology, they are in a RAID
array. This array distributes data across multiple storage drives, but the array appears to the host computer
as one single storage unit. Creating and using RAID arrays provides high performance, such as the expedited
I/O performance, because several drives can be accessed simultaneously.
Storage drive requirements for RAID levels
Your computer supports the M.2 NVMe (PCIe) solid-state drive
Note: Ensure that your computer has two identical storage drives installed (two hard disk drives, or M.2
NVMe solid-state drives with the same capacity) for supported RAID levels. If only one drive is installed, or
two different types of drives are installed, the following information does not apply.
Your computer supports the following RAID levels:
• RAID 0: striped disk array (missing data resulting from a drive failure cannot be reconstructed)
– Consist of two identical storage drives
– Supported strip size: 4 KB, 8 KB, 16 KB, 32 KB, 64 KB, or 128 KB
– Better performance without fault tolerance
– Higher risk of data loss resulting from a member drive failure compared with non-RAID configuration
• RAID 1: mirrored disk array
– Consist of two identical storage drives
– Improved reading performance and 100% redundancy
Enter the Intel RST configuration utility
1. Ensure that RAID is enabled in the UEFI BIOS menu:
a. Restart the computer. When the logo screen is displayed, press F1 to enter the UEFI BIOS menu.
b. Select Config ➙ Storage ➙ VMD controller ➙ On.
c. Press F10 to save changes and exit.
32
ThinkPad X1 Extreme Gen 4 / P1 Gen 4 User Guide
and select the entry for your computer. Then, follow the on-screen
https://pcsupport.lenovo.com
.
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