Disabling these checks (verity and verification) or patching the vbmeta allows the device to boot with modified system files. Step-by-Step: Patching via Magisk App
vbmeta stands for "Verified Boot Metadata". It is a partition or embedded structure that stores cryptographic hashes and signatures for other critical partitions like boot , system , and vendor .
When you patch a boot image for root access, its hash changes.