Cache Partition
Also known as: android cache partition, wipe cache partition, cache partition android
The cache partition is a dedicated Android partition the system uses for temporary data, mainly OS update staging. It is separate from per-app cache and is wiped from recovery mode, not from in-app cleaning tools.
- The cache partition (/cache) is a system Android partition used mainly to stage OTA updates.
- It is wiped from recovery mode and is separate from per-app cache cleared in app settings.
- Many modern A/B-update devices have shrunk or removed the dedicated cache partition.
What the cache partition is
Historically, Android devices shipped with a separate /cache partition reserved for the system. Its main job was staging OTA (over-the-air) updates: the downloaded update package was written there before being applied on reboot. It also held some transient system files. This is system-level storage and is distinct from the per-app app cache stored under each app's data directory.
Because it is a true partition, the cache partition is not the same thing as the cached data you clear inside an app's settings. Clearing an app's cache via Settings > Apps > [app] > Storage frees per-app temporary files; it does not touch /cache. On many modern devices using A/B (seamless) updates, the dedicated cache partition has been shrunk or removed entirely, with update staging handled differently.
Wiping it and what it does
On devices that still have one, you wipe it from recovery mode via the Wipe cache partition option, not from normal settings. This clears stale system temporary data and is a common troubleshooting step after a buggy update or when an OTA fails to apply. It does not erase your personal files, apps, photos, or settings.
For everyday space recovery, the cache partition is rarely the issue, since it is small and fixed in size. The clutter users actually need to clear is per-app cache, junk files, and system data, which a phone cleaner targets directly. Wiping the cache partition is a recovery-mode maintenance action, not a routine cleanup.