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Homelab/Increase Linux Swap file size.md

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+---
+type: ressource
+date: 2025-03-06T10:13
+maturity: graine
+---
+
+To increase the size of your swap file on Linux Mint, follow these steps:
+### Look how much swap you currently have
+
+```sh
+free -h
+```
+### Turn off the current swap file
+```bash
+sudo swapoff /swapfile
+```
+
+### Resize the swap file
+Replace `XG` with the desired new size (e.g., `4G` for 4 GB):
+```bash
+sudo fallocate -l XG /swapfile
+```
+If `fallocate` is not supported, use:
+```bash
+sudo dd if=/dev/zero of=/swapfile bs=1M count=4096
+```
+(for 4 GB, adjust `count` accordingly)
+
+### Set the correct permissions
+```bash
+sudo chmod 600 /swapfile
+```
+
+### Format the swap file
+```bash
+sudo mkswap /swapfile
+```
+
+### Enable the new swap file
+```bash
+sudo swapon /swapfile
+```
+
+### Verify swap space
+```bash
+free -h
+```
+
+### Make it permanent
+Ensure the swap file is reactivated on reboot by adding this line to `/etc/fstab`:
+```bash
+echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
+```
+
+Your swap size is now increased.
+
+
+# Sources
+ChatGPT