I would like to know how do all of the files and directories get placed into the "/data" partition if the userdata.img is blank when flashed. I tried to extract the userdata.img but like everyone on ths list has stated "its empty". but that does explain where the files in the /data partition come from.
C On Thursday, October 8, 2009 1:07:57 PM UTC-4, Mr. INTJ wrote: > > Hi, > > I'm trying to understand what happens under the covers when *end- > users* upgrade their device firmware from Android ver. X to X+1 > (regardless of whether they initiate the action, or their carrier > sends the update OTA). > > I'm working on an Android based device, and I need to understand how > this is supposed to work. A new build of Android contains system.img > and userdata.img (among other files). The system.img file is read- > only, so replacing the user's existing copy shouldn't result in any > data loss. Not so with userdata.img; overwriting this file with a > newer version would destroy all of an end-users application data > (wouldn't it?). Could it be that userdata.img never contains any data > that needs to be updated during a FW upgrade, and so isn't > overwritten? Or is there some process that merges changes into /data? > > Surely there is a procedure envisioned for upgrading FW for Android- > based devices without nuking users' address books, and other private > data. Unfortunately, Googling for this information yields only pages > containing specific hacker-level instructions (e.g. adb commands); I > can't find any mention of this topic online, or in the documentation. > > > > Does anyone know how this is supposed to work, or where this is > documented? > > Thanks very much in advance. > > -Mr INTJ > -- -- unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting --- You received this message because you are subscribed to the Google Groups "android-porting" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-porting+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
