Ramdisk is a small and temporary filesystem which only has critical files to setup the system and boot the device. The /system partition where you are searching for new files actually gets its content from a separate read only system.img file which gets mounted at /system in non SAR devices and at / in SAR devices. On Tuesday, August 9, 2022 at 8:29:07 PM UTC+5:30 [email protected] wrote:
> Hey all, > > New to this exciting world of Android compiling so forgive the likely > simple question: > > I have been trying to prove to myself that I can create a directory or > file by modifying a ramdisk, repackage it into a boot.img, and flash that > image back up to the device. > > However, when I make any changes to the ramdisk, I notice the changes are > not reflected at all when I am looking at the filesystem while I am adb > shell'd in the device. From reading the Magisk docs, I get that there's a 2 > stage mount process going for my Pixel 4a. However, I would expect that if > I were to simply tweak my ramdisk.cpio (extracted via magiskboot), add a > file/directory, to say /system, I'd expect that to show up after doing a > `fastboot flash boot /tmp/new-boot.img && fastboot reboot` as the /system > partition mounts to the rootfs when booting up. > > I get that there could be other gotchas as play, like A/B partitions for > OTA updates and whatnot, but I have tried flashing both partitions, doing a > hard reset, and to no avail. I can not get any file modifications to be > picked up in my ramdisk... which boots and runs perfectly fine btw, but > without the expected mods. > > What (obvious?) component could I be overlooking? > > Thank you! > -Derek > -- -- You received this message because you are subscribed to the "Android Building" mailing list. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-building?hl=en --- You received this message because you are subscribed to the Google Groups "Android Building" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/android-building/c38e403e-cb2b-4a55-9b27-ec3700f2a4ean%40googlegroups.com.
