Intel RST
Intel Rapid Storage Technology (RST) is a solution built into a range of Intel chipsets. 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. This functionality is known as the Redundant Array of Independent Disks (RAID).
In some usage scenarios, RAID offers various advantages over the use of several disks independently. RAID offers multiple configurations — levels — which focus on performance and redundancy.
A complete user guide is available through the official Intel documentation.
RST & Ubuntu installation
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.
By 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.
If the Ubuntu installer cannot detect the hard disks you need, then before you can install Ubuntu, you will need to turn RST in the computer’s BIOS. The exact terminology and steps required to access and manage RST in BIOS often depend on the specific implementation by the platform vendor. For instance, Dell computers may have different settings from Lenovo or HP computers.
Furthermore, you may already have Windows installed on the computer that 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.
Possible installation scenarios
Broadly, there are two main configurations you may encounter when you try to install Ubuntu on a computer that supports and uses RST:
RST used and enabled, no operating system installed.
RST used and enabled, Windows installed.
RST enabled, no operating system installed.
Again, there are two possible scenarios here:
The Ubuntu installer correctly detects the hard disks and can use them. In this case, you can proceed normally.
The Ubuntu installer detects a conflict with RST and will notify the user that RST configuration is required.
The latter scenario can be resolved by either one of the two changes:
AHCI is a relatively new specification that describes how computer storage is accessed and managed, and it supersedes several older specifications. It is primarily designed to utilize advanced features of hard drives connected via the Serial ATA (SATA) bus. Typically, these will be 2.5-in and 3.5-in hard disks, including both mechanical and SSD devices. 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).
The exact terminology and steps required to access and manage controller type in BIOS often depend on the specific implementation by the platform vendor.
RST enabled, Windows installed
Similarly, there are two possible scenarios available:
Caution: 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. Likewise, if you change the controller type from RST to AHCI, Windows may no longer be able to boot.
How to safely re-configure Windows to use AHCI
If the Ubuntu installer detects RST, and you have Windows installed on your system, there are several steps you need to do to allow Ubuntu to install side by side with Windows, without any loss of data and functionality.
Start Registry Editor, and navigate to:
Next, double-click on the iaStorV entry in the left column to expand it, select the StartOverride entry, and then in the right column, change the value of the key 0 to 0.
Once this step is complete, reboot Windows and start your computer’s BIOS. Normally, BIOS is accessed by hitting the F2 or Del key during the early boot sequence. In the BIOS menu, change the hard disk controller type to AHCI. The exact terminology and steps required to access and manage controller type in BIOS often depend on the specific implementation by the platform vendor.
Exit BIOS, and let the system boot. Windows should load normally, and you can check the controller mode in the Device Manager. It should read: Standard SATA AHCI Controller.
Possible boot problems
After making the necessary changes to allow Ubuntu to install side by side with Windows, you may encounter a situation where Windows no longer boots. For instance, this could happen if you made the BIOS change without making the registry changes in Windows. In this case, you will need to recover your Windows.
You will most likely see a blue screen with a Stop code: INACCESSIBLE BOOT DEVICE.
Windows will attempt to restart and automatically diagnose and repair the boot-related problems, but it will most likely not be able to complete the task itself, and you will need to manually launch the command prompt from the recovery screen, and fix the issue.
On the screen that gives you the result of the Automatic Repair, click on Advanced Options. Under Choose an option, select Troubleshoot. Next, selected Advanced Options again. Finally, select Command Prompt.
Command prompt, diskpart and bcdedit
This will launch the Windows command prompt, where you can run commands to diagnose and repair problems, including boot-related issues. The first step is to run the disk partition tool to see and understand the disk layout.
On the command line, type diskpart . Next, you will need to display the list of volumes, make sure the volume that contains Windows is correctly assigned the letter C: (if it’s not, you will need to change this), make this volume active, and then run the boot repair command.
The full sequence of commands is as follows:
For example, a “wrong” volume may be assigned the letter C:, so you will need to select it first, assign it a different letter (e.g.: F: or H:), select the volume that contains Windows, and then assign it the letter C:.
Finally, activate the C: volume, and exit the diskpart utility.
Now, run the bcdedit repair command:
If the above does not work, alternative commands you can run are:
If this command completes successfully, exit the command prompt, the Windows recovery console will restart, and Windows should load normally, with the controller mode set to AHCI.
If Windows does not start correctly, you can then manually recreate the bootloader file.
To this end, you will need to access either the System partition or the EFI partition on your computer. The Windows disk layout will typically include one of these two configurations:
A volume that contains Windows (C:) and a small hidden partition, usually 100MB in size called System partition, formatted as NTFS. It contains the files needed to start (boot) Windows, as well as recovery tools to help you diagnose and repair your system when it does not start correctly.
On UEFI-powered computers, a volume that contains Windows (C:) and a boot partition (also called EFI), typically 256-512MB in size, formatted as FAT32. This partition will contain the files needed to start (boot) Windows.
You will need to access the partition to make the necessary changes. If you have already run the diskpart utility, you do not need to do anything at this point, you only need to check the letter that is assigned to this partition (e.g.: letter F:).
Switch to the boot partition, move the existing boot file aside, and then create a new one. The sequence of commands to do this is as follows (assuming letter F: for the boot partition):
The bcdboot command will initialize the system partition by using BCD files from the C:\Windows folder, use the en-us locale (/l en-us), target the system partition assigned letter F: (/s option), and create boot files both for UEFI and BIOS (/f ALL option).
Once this command completes, reboot. Windows should start normally. You can now re-launch the Ubuntu installer and finish the side-by-side setup of the two operating systems.
The material in this document is available under a free license, see Legal for details.
For support please use Ask Ubuntu.
Обходной путь для установки Ubuntu 20.04 с системами Intel RST
Я попытался установить Ubuntu 20.04 на свой Dell G5 с двумя дисками. Один с Windows 10 (256 ГБ), а другой — 1 ТБ.
Я уменьшил объем 1 ТБ на 150 ГБ и попытался установить туда.
Но установщик Ubuntu не позволил мне, так как я получил диалоговое окно после того, как настройка клавиатуры сказала «Отключить RST» с сообщением
В этом компьютере используется Intel RST (технология быстрого хранения). Перед установкой Ubuntu необходимо отключить RST. Для получения инструкций откройте эту страницу: help.ubuntu.com/rst
Если я внесу какие-либо изменения в настройки BIOS, например переключу контроллер Intel с RAID на AHCI, Windows не загрузится и перейдет в Восстановление системы.
У меня не было этой проблемы при установке 18.04. При создании разделов вам необходимо создать раздел EFI размером 200 — 500 МБ с помощью обычных шагов, и установка будет успешно завершена.
При перезапуске вы не получите GRUB, но вместо этого по умолчанию загрузится Ubuntu. Если вам нужно загрузить Windows, вам придется заходить в BIOS и каждый раз выбирать вариант загрузки UEFI.
После завершения установки 18.04 вы можете обновить его до 20.04.
После обновления я установил рабочий стол KDE и на экране входа в систему выбрал вариант «Ubuntu on Wayland».
После выполнения этих двух действий я потерял новые функции 20.04, такие как экран загрузки Ubuntu с логотипом Dell и экран с эффектом размытия при выключении / выходе из системы. Не знаю, как это вернуть.
Отключить RST для установки ubuntu 20.4 Dual boot
Недавно я купил Lenovo ideapad S340 (Intel i7 и SSD) и пытаюсь установить Ubuntu 20.04 помимо Windows 10. Все идет гладко, пока меня не попросят отключить Intel RST. Вернувшись в BIOS, я выбираю переключение с RST на DH_something и получаю предупреждение о том, что я (могу) потерять все данные . Я не буду этого делать! Я не буду устанавливать Linux, поскольку Ubuntu позволяет сначала. Итак, мой вопрос: Все больше и больше компьютеров будут использовать режим RST .. Когда он станет доступным . месяц, год, больше?
2 ответа
Intel RST
У вас есть один SSD / HDD, настроенный в режиме RAID, и установщик Ubuntu не распознает ваш SSD / HDD, пока вы не переключите настройки диска в BIOS с RAID на AHCI.
При этом переключении возникают некоторые проблемы, так как Windows больше не загружается.
Вам не нужно переустанавливать Windows .
Ниже вы найдете два разных способы решения этой проблемы. Некоторые пользователи сочли вариант №2 проще .
Убедитесь, что у вас есть резервная копия важных файлов Windows!
How to install Ubuntu on a PC where RST which can not be disabled?
I wish to make an ‘Omen X by HP S2’ (a 15" HP laptop with NVIDIA RTX graphics) dual boot or Ubuntu only, and in the BIOS/UEFI I cannot disable RST or switch it off. I contacted HP and they also said it is not possible — I guess they have a deal with Intel and do not allow disabling any more.
I’ve tried Ubuntu versions back to 14 LTS as well as the latest 22 LTS, but all of them complained about the RST and wouldn’t allow me to install Ubuntu. This unfortunately makes this pricey bit of kit a Windows-only box.
Since it already exists for several years, can Ubuntu please support RST?
Edit: When searching for possible solutions, I also found posts from people who have both RST and non-RST storage on a computer and because RST is found on that system the Ubuntu installer stops and also does not allow you to install it on non-RST storage. Please support RST, whether we like it or not, many devices have it and on some it cannot be disabled — preventing the device owner to install Ubuntu.