[ext4] Glitch/Discovery

[Misledz]

So it has come to my attention that when you restore a firmware via nandroid backup It does not restore the default ext4 partition that you convert. I found this out today when I had hoped my constant flashing would lead to XXKPN not booting unless I used CFRoot when flashing from Cranium [XXKPH]. Only to find out the firmware booted . Now this got me in surprise only because default partition is rfs and not supposed to be able to boot if set partition format was ext4. All default Samsung firmwares come with rfs partition.

Note: Next time you flash to a new firmware and back, you are required to flash the ext4 script then restore your nandroid backup for that respective firmware.

 

[falex007]

So it has come to my attention that when you restore a firmware via nandroid backup It does not restore the default ext4 partition that you convert. I found this out today when I had hoped my constant flashing would lead to XXKPN not booting unless I used CFRoot when flashing from Cranium [XXKPH]. Only to find out the firmware booted . Now this got me in surprise only because default partition is rfs and not supposed to be able to boot if set partition format was ext4. All default Samsung firmwares come with rfs partition.

Note: Next time you flash to a new firmware and back, you are required to flash the ext4 script then restore your nandroid backup for that respective firmware.

I thought everyone knows this Because
1. before converting to ext4 you make backup. And if it will restore filesystem you will never get ext4 (it will always put rfs from backup)
2. when you make backup you can see that it backups files, not partition.

 

[Lordrdx666]

Mods please Sticky this thread and lock it by Misledz's permission before the thread is noob killed

Tapashocked via my gt-I9003 with a random keyboard of my choice !

 

[vishal24387]

I think mod should murge this info in already available sticky thread. Making lot of thread sticky will not be a good idea.

 

[wardfan220]

I think mod should murge this info in already available sticky thread. Making lot of thread sticky will not be a good idea.

I have to agree, although this is helpful information, having too many stickied threads could become a problem.

 

[KBS720]

I thought everyone knows this Because
1. before converting to ext4 you make backup. And if it will restore filesystem you will never get ext4 (it will always put rfs from backup)
2. when you make backup you can see that it backups files, not partition.

I too already know this by reading skin's original post on ext4.
Instructions were to make nandroid backup -> convert to ext4 -> restore backup -> reboot.
After that u will have ext4 partitions.
So after you anything restore from backup, u will still have ext4.

 

[Misledz]

Yeah but this came as a surprise, I didn't expect that the file system gets overwritten. Some cases flashing to another firmware kicks you into a bootloop due to ext4 previously there, but there are times when the firmware boots which got me in wtf is happening kind of scenario.

When I used cranium or any custom ROM usually does Ext4 by default, but upon flashing XXKPN on top of it, it worked? Which isn't supposed to, So what I'm confused is, What is responsible for the rfs file format, the pit? or the firmware? , and does clearing cache partition reset to rfs?

Because flashing XXKPH->XXKPN->XXKPH without use of pit works and this is without CFRoot

 

[manrock111]

Yes for what this pit file for ? Means for what partition.is it convert file system to rfs ?