Trying ReactOS no longer requires two downloads. Developers merged the project's Live and Boot ISOs into a single image so a single USB can boot a live desktop or run the installer. They also laid groundwork for a graphical installer due in the next release, and added a new ATA storage driver to expand supported drives. Those changes aim to make the Windows-like, open-source OS easier for people who miss Windows XP or 7 to try.

ReactOS is an open-source operating system that aims to behave like older versions of Windows. It’s developed independently of Microsoft. The project targets the feel and compatibility of Windows XP and Windows 7 rather than modern releases.

Until now, trying ReactOS required two ISO images. One image boots a live desktop so you can poke around. The other image boots a text-based installer you use to put the OS on disk.

One image, two modes

Developers have merged the LiveCD and Boot ISOs into a single image. You can now burn one ISO to a USB stick and use it to test ReactOS or to install it. That removes the older two-step process of booting a live environment and then restarting with a separate installer image.

For many users, that was a stumbling block. The live desktop looks modern and Windows-like. The installer did not.

It used an old-school, text-driven setup that felt more like vintage Windows than a current desktop installer.

Merging the images brings the install flow more in line with many Linux distributions. You can evaluate the desktop without leaving the same session. And if you like what you see, you install from the same running environment.

Installer GUI and better storage support

The project also laid the groundwork for a full graphical installer. The developers say that foundation is due to appear in the next release. When that arrives, users should get a point-and-click setup instead of a purely text-based sequence.

Mastheads

At the same time, ReactOS is getting a new ATA storage driver. That driver will let the OS boot from SATA, PATA, ATAPI, and AHCI devices. Previously, the build supported a narrower set of storage hardware. The wider driver support means fewer compatibility headaches when installing on modern or older machines.

Together, the installer work and the ATA driver remove two practical obstacles. One makes the install flow friendlier. The other widens the range of hardware the OS can run on.

Keep in mind ReactOS is still in alpha. The project describes the work as early-stage development. That means casual testers can try the build, but they should expect rough edges and incomplete features.

ReactOS also aims for compatibility with Windows applications. The project’s architecture is meant to run many Windows programs without touching Microsoft code. That makes it an option for people who want a Windows-like experience without a proprietary licence.

That compatibility focus isn't the same as cloning the latest Windows releases. The look and behaviour are closer to Windows XP and Windows 7. Users expecting Windows 8, 10, or 11 feature parity will find differences.

Who this helps

The changes should make ReactOS easier to test for newcomers. People nostalgic for XP-era interfaces get a lower barrier to entry. Hobbyists who tinker with alternative systems will face fewer installation hurdles.

Developers and testers get clearer feedback paths too. A single ISO means fewer steps to reproduce bugs. It also simplifies creating bootable USB images for wide testing.

At present, the project remains an alpha distribution, so it’s not a drop-in replacement for a stable Windows install. But the merged ISO and new storage driver shift the project toward greater practical usability for trial and experimentation.

Installation and availability

The merged ISO will appear in the next ReactOS release. Users can write the image to a USB drive and either run the OS live or start installation from the same session. The graphical installer groundwork is scheduled for the next release, which the developers say will follow the merged-image rollout.

Because ReactOS is community-led, release timing may vary. The project’s alpha status also means the team will continue refining drivers, installer components, and application compatibility over multiple builds.

For anyone who misses Windows XP or 7 and wants an open alternative to test, ReactOS just removed two common obstacles: a split download flow and limited storage support.

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The merged ISO is expected in the project's next release. Developers also plan to include the graphical installer groundwork and a new ATA driver that will enable booting from SATA, PATA, ATAPI and AHCI devices.

This article was created with AI assistance.