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Note: During the UEFI BIOS update process, 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 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
Cloud bare metal recovery (for selected models)
This feature enables you to remove all user files on your computer and restore the Windows operating
system from Cloud (Microsoft
information.
Notes:
• This feature will restore your computer to the Windows operating system preinstalled at the factory. Do
not use this feature if a customized operating system is installed on your computer, otherwise the
customized functions or applications cannot be restored.
• This feature only works with wired network (connected via the Ethernet connector on your computer) and
wireless network (WPA2 personal only).
Do the following to restore the Windows operating system:
1. Restart the computer. When the logo screen is displayed, press F1 to enter the UEFI BIOS menu.
2. Select Config ➙ Reinstall Windows from Cloud. Follow the on-screen instructions to enable this
feature.
3. Press F10 to save changes and exit.
4. The computer will restart automatically. When the logo screen is displayed, press F12.
5. Select App Menu ➙ Reinstall Windows from Cloud, and then follow the on-screen instructions.
If the recovery process fails, you still have other options to restore the Windows operating system. For more
information, refer to "Self-help resources" on page 54.
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 Non-Volatile Memory Express (NVMe) solid-state drive.
Note: Ensure that your computer has two identical storage drives installed (two 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:
®
Connected System Recovery). Before using this feature, read the following
https://pcsupport.lenovo.com
.
Chapter 5
Configure advanced settings
.
37
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