![]() How to safely re-configure Windows to use AHCI Likewise, if you change the controller type from RST to AHCI, Windows may no longer be able to boot. In this case, the change will affect the installed Windows operating system.Ĭaution: Please note that changes to storage configuration can be destructible and lead to irrecoverable loss of data! If you break a RAID setup, your data may no longer be accessible. The Ubuntu installer detects a conflict with RST and will notify the user that RST configuration change is required.You will need to create a side-by-side configuration for Windows and Ubuntu. The Ubuntu installer correctly detects the hard disks and can use them.Similarly, there are two possible scenarios available: The exact terminology and steps required to access and manage controller type in BIOS often depend on the specific implementation by the platform vendor. The change from RST to AHCI may result in the loss of some of the advanced functionality that the RST module offers (for instance TRIM for SSD). Typically, these will be 2.5-in and 3.5-in hard disks, including both mechanical and SSD devices. It is primarily designed to utilize advanced features of hard drives connected via the Serial ATA (SATA) bus. Changing the storage controller protocol from RST to Advanced Host Controller Interface (AHCI).ĪHCI is a relatively new specification that describes how computer storage is accessed and managed, and it supersedes several older specifications.The latter scenario can be resolved by either one of the two changes: The Ubuntu installer detects a conflict with RST and will notify the user that RST configuration is required.RST enabled, no operating system installedĪgain, there are two possible scenarios here: RST used and enabled, Windows installed.RST used and enabled, no operating system installed.Possible installation scenariosīroadly, there are two main configurations you may encounter when you try to install Ubuntu on a computer that supports and uses RST: If you disable RST in the BIOS or change the RST configuration, Windows may become unbootable, as it may no longer be able to find and use the hard disks. For instance, Dell computers may have different settings from Lenovo or HP computers.įurthermore, you may already have Windows installed on the computer that uses RST. The exact terminology and steps required to access and manage RST in BIOS often depend on the specific implementation by the platform vendor. If the Ubuntu installer cannot detect the hard disks you need, then before you can install Ubuntu, you will need to turn off RST in the computer’s BIOS. If you intend to install Ubuntu on a computer that supports RST functionality, you may need to make operational adjustments to your setup before you can proceed.īy default, the Ubuntu installer can detect certain RAID configurations, but it may not necessarily be able to access and use the hard disks grouped in them. RAID offers multiple configurations - levels - which focus on performance and redundancy.Ī complete user guide is available through the official Intel documentation. In some usage scenarios, RAID offers various advantages over the use of several disks independently. This functionality is known as the Redundant Array of Independent Disks (RAID). On platforms that have RST support built and enabled in the computer’s BIOS, it allows users to group and manage multiple hard disks as single volumes. Intel Rapid Storage Technology (RST) is a solution built into a range of Intel chipsets.
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