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---
tag: m0022
title: Release SD card
brief: Simulate ejection of the SD card
author: thinkyhead
requires: SDSUPPORT
group: sdcard
codes: [ M22 ]
notes:
- Requires [`SDSUPPORT`](/docs/configuration/configuration.html#sd-card)
parameters:
examples:
---
If Marlin gets confused about the state of the SD card, this command can be used to simulate an ejection of the SD card.
Re-insert the SD card or use [`M21`](/docs/gcode/M021.html) to enable the SD card following [`M22`](/docs/gcode/M022.html).
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