hello nagesh_accord,
let me have some clarifications,
(1) it’s APP partition for the RootfFS (RootFileSystem), for example, the internal eMMC storage use-case, it’s /dev/mmcblk0p1 to mounted on “/”.
(2) there’re other partitions. you may see-also $ ls -al /dev/disk/by-partlabel/
but… user data usually contain in RootfFS.
(3) >> Also this erase performed by flashing script, how different is this from normal “rm” delete command?
you don’t need to boot the device into linux to preform that with flashing script.
(4) as mentioned, disk encryption function it creates additional APP_ENC partition, which means this is encrypted partition. secure erase is other things, secure erase is not supported on any of the Jetson devices.
(5) JetPack 5.1.3 is the latest JP-5 release which support disk encryption.
we’ve also tested and verified it worked as expected, see-also Topic 284400.
>>Q1
you may see-also Two Ways to Make Kingston SSD Secure Erase.
>>Q2
no, they are not related to secure erase.