If you're looking for a lightweight Linux distribution for an older laptop with weak hardware, there are several options you can choose from. Some popular lightweight Linux distributions include:

Lubuntu: This distribution is based on Ubuntu and uses the LXQt desktop environment. It is designed to be lightweight and suitable for older hardware. Lubuntu requires fewer system resources compared to Linux Mint and should run well on your Pentium-based laptop.
Puppy Linux: This is another lightweight distribution that runs entirely in RAM, which means it can run efficiently even on systems with slow HDDs. Puppy Linux is highly customizable and comes with a minimal set of pre-installed applications, allowing you to add only the software you need.
antiX: Based on Debian, antiX is designed for low-resource systems and uses the IceWM or Fluxbox window manager. This distribution is lightweight and highly configurable, making it suitable for older hardware.
Bodhi Linux: This distribution is based on Ubuntu and features the Moksha desktop environment, which is a fork of the Enlightenment desktop. Bodhi Linux is lightweight and highly customizable, allowing you to create a minimal and efficient system.
Xubuntu: Similar to Lubuntu, Xubuntu is based on Ubuntu and uses the Xfce desktop environment. Xubuntu is a good option if you're looking for a lightweight distribution that still offers a user-friendly interface.
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