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DeckyCache user guide
| Requirement | Current bundle |
|---|---|
| Supported SteamOS channel | Stable only. Beta, Preview and Main are not supported. |
| Tested SteamOS | 3.8.28, build 20260922.1, on an NVIDIA x86-64 PC |
| Required kernel | 6.18.50-valve2-1-neptune-618-gc7289a96b14d |
| Library drives | Separate ext4 data partitions |
| Tested Decky Loader | 3.2.10 |
Check uname -r in Desktop Mode before installing. The kernel must match exactly.
The SteamOS version alone is not enough: an update may change the kernel.
This plugin does not rebuild or replace it; another kernel needs a matching module bundle.
Full compatibility and update information
DeckyCache puts an SSD or NVMe cache in front of selected game-drive partitions. Original games stay on the HDD. The panel handles drive preparation, library selection, drive or folder cache scope, clearing cached copies, a master switch and compatible GitHub updates.
Non-Steam shortcuts on selected drives are detected automatically when they point directly to the game. The game list reuses names and custom artwork already configured in Steam.
| Start here | What it covers |
|---|---|
| Installation | Install the ZIP through Decky Developer settings, then use the built-in updater. |
| First setup | Select, format or reuse the cache drive; enable library drives and choose cache folders. |
| Everyday use | Cache scope, game tiles, Other cached data, clearing cache and Steam updates. |
| Compatibility | Supported filesystem, exact kernel bundle and update requirements. |
| Troubleshooting | Missing drives, game list entries and cache readings. |
| Uninstalling | Return to direct HDD access and remove the plugin. |
| How it works | Open CAS, persistent blocks and the limits of game attribution. |
Current build: Open CAS write-around read caching with drive or folder selection. Writes stay on the original HDD without allocating new cache blocks. No pinning or full-game preload.