Many laptop reviews briefly boot Linux from a live USB, then mention that webcams, speakers, Wi-Fi, or other hardware might work differently after a proper installation and system updates. I understand that reviewers may not want to replace the operating system on a loaner machine, but could they install Linux onto an external SSD and boot from it instead? Would that provide a more accurate picture of everyday performance and hardware compatibility, or would it have essentially the same limitations as a live USB session?
4 Answers
A live USB is convenient because it is quick, disposable, and doesn't modify the laptop. It is also useful as a first compatibility check: if the webcam, speakers, or Wi-Fi fail there, they may need extra troubleshooting after installation. However, a live session uses a mostly read-only image and does not test updates, persistent configuration, or long-term stability very well.
Linux generally detects the hardware at boot, so moving an installed system between similar or different laptops often works. You may need to reconnect networks or adjust graphics and power settings, but it usually isn't tied to one specific machine. An external installation would therefore be a more thorough test than a live image, though it still might not match an internal drive exactly.
They absolutely can install Linux to an external SSD and run it as a normal persistent system. That would let them apply updates, install drivers and firmware, save settings, and test suspend, peripherals, and applications more realistically. The main limitation is that the external connection can affect storage performance, especially with a basic USB enclosure or flash drive.
The bigger issue for short-form reviews is time. Properly installing Linux, updating it, testing different kernels, and investigating hardware quirks can take hours or days. A live USB is not necessarily the best test, but it is the fastest consistent method for a reviewer who only has the laptop briefly.
Modern USB 3.x and Thunderbolt enclosures can be fast enough that the difference is minor, but the result depends heavily on the port, enclosure, SSD, and workload.