Whether you’re backing it up, resizing it, or simply understanding what it is, knowing about Magisk IMG helps you troubleshoot root issues like a pro.
/data/magisk.img or on newer versions (Magisk 24+): magisk img
Resize it (example to 512MB):
su dd if=/dev/zero of=/data/magisk.img bs=1M count=0 seek=512 e2fsck -f /data/magisk.img resize2fs /data/magisk.img reboot Copying /data/magisk.img saves all your modules and settings in one file. Restore by copying it back (with correct permissions 600 ). 3. Manually Adding a Module Unzip a Magisk module ZIP. Copy its contents into a new folder inside the mounted image, then set permissions and reboot. Magisk IMG vs. Boot IMG This is a crucial distinction: Whether you’re backing it up, resizing it, or
| | Magisk IMG | |-------------|----------------| | Flashed to the boot partition | Lives in /data | | Contains kernel + ramdisk | Contains modules + root binaries | | Patched once during Magisk install | Modified every time you add/remove modules | | If corrupted → bootloop | If corrupted → Magisk not working (but device boots) | Magisk IMG vs
Android’s system partition is read-only on modern devices (thanks to Verified Boot and dm-verity). To make changes without actually altering /system , Magisk needs a file system.
What is this mysterious image file? Is it a boot image? A system image? And why should you care?