How to install Photoshop CS on laptop without CD drive

CS1, CS2 and CS3 are dead & gone. The aging activation servers failed and were taken offline years ago. So even if you find an installer, it's impossible to activate those versions of the software.

CS4, CS5 and CS6 are on life support. But they can still be activated providing you have the following:
1. original media (disks or downloads) you received at purchase and a way to read them (external optical readers are about $20 on Amazon),
2. a legitimate serial number for that version, language and platform (Win/Mac),
3. an older operating system that can support legacy 32-bit apps.
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NOTE: Legacy Creative Suite is discontinued & unsupported. Use at your own risk.

MODERN OPTIONS:
Photoshop Elements 2021 (approx $100, no subscription needed)
https://www.adobe.com/products/photoshop-elements.html

Creative Cloud Photography Plan -- approx $10/month for 12 months. Includes the very latest versions of these great products & services:
-- Photoshop CC and Photoshop on iPad
-- Lightroom on desktop, mobile and the web
-- Lightroom Classic
-- Portfolio website + hosting
-- Spark with premium features
-- Bridge
-- 20 GB cloud storage (upgradable to 1 TB).
https://www.adobe.com/creativecloud/photography.html

Creative Cloud All Apps (31 + apps & services) and Single Apps Plans
https://www.adobe.com/creativecloud/plans.html

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Beware of fake Adobe reps who may contact you privately offering to sell you software or take control of your computer. It's a scam, run away!
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3 Easy Ways to Identify Genuine Adobe Staff
https://tinyurl.com/10791730