linuxdreams

WHAT THE GUIDANCE SAYS

Old computer,
new chapter.

A computer can outlive its software.

When the operating system stops getting security updates, the hardware often still works. UK security guidance says unsupported software gets riskier over time, so the choice is to move it onto supported software, or wipe it and recycle it.

An older laptop open on a wooden desk by a window, beside a USB stick and a cup of tea
AI-generated image, not a photograph of a real person or place.

62 MILLION tonnes of e-waste in 2022

  • Keep it updated
  • Reuse if you can
  • Wipe, then recycle
  • Safer and less waste

THE SHORT ANSWER

Supported software,
or responsible recycling.

Three things worth knowing
before an old PC goes in a cupboard.

THE RISK

No updates, more risk

The NCSC says when a product no longer receives security updates, exploitable vulnerabilities are more likely to become known to attackers.

Check your computer

REUSE

A lighter, supported system

Some Linux systems run on modest hardware. Debian recommends 2 GB of RAM and 10 GB of disk for a desktop, and its LTS project supports each release for at least 5 years.

Before you start

RECYCLING

Most e-waste is not recycled

Only 22.3% of the world's e-waste in 2022 was documented as properly collected and recycled, according to the UN's Global E-waste Monitor.

See the numbers

CHECK YOUR COMPUTER

What state
is it in?

Pick the description closest to your old computer to see what the guidance points to. The bar shows how pressing it is to act.

Computer check

Choose a description
Still gets security updatesKeep updating

Keep installing them. The NCSC warns that once security updates stop, exploitable vulnerabilities become more likely to be known to attackers.

No longer gets updatesMove or retire

Over time, new vulnerabilities will be found that relatively low-skilled attackers can exploit, the NCSC says. The only fully effective fix is to stop using the obsolete product.

Works, with 1 to 2 GB of RAMCould reuse

Debian lists 1 GB of RAM as the minimum and 2 GB as recommended for a desktop install, with 10 GB of disk and at least a Pentium 4, 1 GHz processor.

Giving it away or sellingErase first

Back up what you want to keep, check you know your account logins, then erase all personal data, the NCSC advises.

Broken beyond useRecycle it

Shops selling a new version of an item must offer a free way to take back the old one, in store or through an alternative scheme.

Sources: NCSC, Obsolete products and Buying and selling second-hand devices; Debian installation guide and Debian LTS; GOV.UK, Electrical waste: retailer and distributor responsibilities.

Based on NCSC guidance, Debian's installation manual and GOV.UK rules on electrical waste. General information only.

TWO NUMBERS WORTH KNOWING

A growing pile,
a small share recycled.

Two figures from the UN's fourth
Global E-waste Monitor, published in 2024.

62 million tonnes

E-waste produced worldwide in 2022

Up 82% from 2010, and on track to reach 82 million tonnes by 2030. The UN says e-waste is rising five times faster than documented recycling.

E-WASTE · UN GLOBAL E-WASTE MONITOR

22.3%

Share documented as properly collected and recycled

That left US$62 billion of recoverable natural resources unaccounted for in 2022. The report expects the rate to fall to 20% by 2030.

RECYCLING · UN GLOBAL E-WASTE MONITOR

The 62 million tonnes of e-waste generated in 2022 would fill 1.55 million 40-tonne trucks, enough to form a line around the equator, according to the report.

FOUR STEPS BEFORE A FRESH START

Plan it,
then wipe it.

Whether an old computer gets a new operating system, a new owner or a trip to recycling, the first steps are the same.

  • Back up your files

    The NCSC says to make a backup of all the personal data you want to keep before erasing anything.

  • Note your logins

    If you stay signed in to banking, email or shopping, make sure you know those logins before you wipe the machine.

  • Check the hardware

    Compare its memory and disk with the minimum requirements of the system you plan to install, such as Debian's table.

  • Choose supported software

    Pick a system that still gets security updates, and check how long its releases are supported.

Old laptops and keyboards placed in a large collection bin at a household recycling centre
AI-generated image, not a photograph of a real person or place.

WHY UPDATES MATTER

Two problems
that grow together.

Hands plugging a USB stick into the side of an older laptop on a desk
AI-generated image, not a photograph of a real person or place.

The NCSC says obsolete products combine two problems: they no longer receive security updates, and they lack the latest security measures. Together, these make serious security incidents more likely.

Debian's Long Term Support project extends the life of every Debian stable release to at least 5 years. It is run by a separate group of volunteers and companies that take over security maintenance after the main security team stops.

Questions

Questions people ask

Is it safe to keep using a computer that no longer gets updates?

The NCSC says there is no risk-free way to keep using obsolete products, and the only fully effective way to remove the risk is to stop using them. Over time new vulnerabilities are found.

Can an old computer run Linux?

Often, depending on the system. Debian's guide recommends 2 GB of RAM and 10 GB of disk for a desktop, with 1 GB of RAM as the minimum and a Pentium 4, 1 GHz processor.

How long are Linux systems supported?

It varies by system. Debian's Long Term Support project aims to extend the lifetime of every Debian stable release to at least 5 years.

What should I do before giving an old computer away?

The NCSC advises backing up the data you want, making sure you know your account logins, and then erasing all your personal data, for example with a factory reset or a clean install.

Where can I recycle an old computer?

Shops that sell electrical goods must offer a free take-back service for an old item when you buy a new version of the same thing, in store or through an alternative scheme.

Sources

Where the facts come from

  1. UN Global E-waste Monitor 2024 (ITU and UNITAR)
  2. NCSC: Obsolete products (device security guidance)
  3. NCSC: Buying and selling second-hand devices
  4. Debian installation guide: Meeting minimum hardware requirements
  5. GOV.UK: Electrical waste, retailer and distributor responsibilities
  6. Debian: Debian Long Term Support

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