Hello,
I was wondering: What exactly happens to the Wizard when you perform a reset?
Are all the files on the Wizard deleted except for the operating system?
or
Are all the files on the Wizard deleted except for the operating system and the Extended_Rom folder?
or
Are all the files on the Wizard restored to their original state from some sort of image? So you lose all information but if you previously deleted a file in the Extended_Rom folder it comes back after a hard reset?
Also, what happens when the battery drains? Do you also lose your files as you did with the Magician, or are all your files still on the device? (persistant storage).
all files in the "user storage" area of the rom are deleted (formated)
this in essance forces WM2005 to start afresh.
this user storage area is in the same memory as the operating system so isnt affected by anything, only hard reset (format user storage area).
I have an SD card with 3 partitions: fat32(7gB)/ext4(488mB)/swap(91mB). not sure what order I created them in, and not sure if that matters.
when I do a nandroid backup, is it also backing up my ext4 partition where my apps2sd apps are kept? I want to be able to use nandroid to swap between many different ROMS, but still have all my settings saved per ROM. And hopefully apps as well, whether it be by the nandroid restore or (and im not even sure if it works this next way im describing) by different ROMS being able to see the apps in apps2sd and use them?
Like I said, Im not sure how apps storage/location actually works. If I install apps on the sd card, and I put an upgraded or even a different custom ROM on, does the system see the apps on the new ROM? Or are we also supposed to wipe ext partitions as well?
Can someone let me know what "wiping" data and/or cache actually does? IS there a basic phone architecture doc I can read to see what data / cache actually is used for?
Wiping refers to the internal memory of the device. Not the SD.
By wiping you remove all settings and software installed on the device itself.
If you boot after a wipe, you will have to re-enter your google account information and wait for the sync to complete.
If you have apps2sd, (most of) your apps will be on the ext partition on your SD card. Those don't get deleted when you wipe. If you have go from 1 apps2sd capable rom to another, your apps will still be there. And the apps that store settings on the SD will have their settings saved too (only one I know of is gem-miner).
try bart
opticalc said:
I want to be able to use nandroid to swap between many different ROMS, but still have all my settings saved per ROM.
Click to expand...
Click to collapse
I recommend using a more complete back-up and restore tool like BART or Switchrom. Do a search for BART on the Dream Development forum and you'll find everything you need. It's built in to the latest RA recovery images as well and works great.
Sorry if this has been posted before, I've serached to no avail. I'm trying to better understand the whole ROM/RAM thing, and have a few questions that will clarify whats going on
a) Without having an SD card, if I copy a file to, say, the "My Documents" folder on the phone, does this get stored on the ROM, or the RAM?
b) I've recently done a hard-reset to restore back to factory settings, but afterwards found some folders on the phone that aren't "factory" (Swype for instance). I thought a hard-reset wiped out all data and replaced it, no?
c) If I were to somehow completely wipe the storage area of my phone (Program files / Windows / ConnMgr folders for instance), would a hard-reset be enough to restore functionality? If so, where would the system files come from?
d) Is the 448Mb RAM used solely for CPU execution, and is wiped by soft-reset or removing the battery?
Sorry if these questions are real basic, but necessary in order to further understand whats going on
Richard_Bushby said:
Sorry if this has been posted before, I've serached to no avail. I'm trying to better understand the whole ROM/RAM thing, and have a few questions that will clarify whats going on
a) Without having an SD card, if I copy a file to, say, the "My Documents" folder on the phone, does this get stored on the ROM, or the RAM?
b) I've recently done a hard-reset to restore back to factory settings, but afterwards found some folders on the phone that aren't "factory" (Swype for instance). I thought a hard-reset wiped out all data and replaced it, no?
c) If I were to somehow completely wipe the storage area of my phone (Program files / Windows / ConnMgr folders for instance), would a hard-reset be enough to restore functionality? If so, where would the system files come from?
d) Is the 448Mb RAM used solely for CPU execution, and is wiped by soft-reset or removing the battery?
Sorry if these questions are real basic, but necessary in order to further understand whats going on
Click to expand...
Click to collapse
a) ram on the HD2 is just like the ram of your home computer... it's not for storage, but for program runtime memory
b) may be weird, unless you had a swype folder that came with your stock rom in the first place and you didn't know anyway the plain hard reset doesn't properly format your internal storage memory, that's why tools like task29 exist; it may be possible that folder "survived" the hard reset, even if I find it strange
c) those files would come from the "ROM" after a hard reset the internal storage memory is 512MB, there are "partitions" in it, for radio, rom image, and user files, when you delete system files on your device you are not really deleting the files from the rom image, so they will just be restored after hard reset. Someone please correct me if I'm writing wrong pieces of information
d)yes, again it's just like your pc's ram. Back in the times, old pda's had a pool of "ram" that was used practically for everything, and was in fact shared between program runtime excecution,and files storage, while their "rom" wasn't user writeable, and reserved for just the OS image (thinking about my very first WinCE device now, casio cassiopeia, quite some years have passed!), so if you removed the battery and your backup battery ran out, you would lose your files. HD2 instead has his persistent memory chip, the 512MB/1024MB rom chip, so you won't lose any data without power, but surely your ram chips will.
Thanks for your reply! Just to make sure I've got this right:
The HD2 has:
448MB RAM - volatile / battery dependant memory that is used for program
execution just like in a PC
512MB "storage memory" - non-volatile memory where the windows system
files, program files, music files and "my documents" are stored. Kind of like
the HDD in a PC
512MB ROM - stores the operating system and factory files that are copied
to the "storage memory" in the event of a hard reset. These files can only
be changed by flashing a new ROM image.
A Hard Reset wont format the "storage memory", it will just replace certain
files and folders from the ROM image.
A smaller, or lite ROM image will result in more "storage memory" after a
hard reset
Have I got this basically correct?
If so, one last quick question:
Task29 formats the "storage memory" correct? So I should be able to Task
29 and then a hard reset will get things back up and running without
having to do any flashing of the ROM?
Many thanks in advance
Can anyone confirm the above post?
Richard_Bushby said:
Thanks for your reply! Just to make sure I've got this right:
The HD2 has:
448MB RAM - volatile / battery dependant memory that is used for program
execution just like in a PC
512MB "storage memory" - non-volatile memory where the windows system
files, program files, music files and "my documents" are stored. Kind of like
the HDD in a PC
512MB ROM - stores the operating system and factory files that are copied
to the "storage memory" in the event of a hard reset. These files can only
be changed by flashing a new ROM image.
A Hard Reset wont format the "storage memory", it will just replace certain
files and folders from the ROM image.
A smaller, or lite ROM image will result in more "storage memory" after a
hard reset
Have I got this basically correct?
If so, one last quick question:
Task29 formats the "storage memory" correct? So I should be able to Task
29 and then a hard reset will get things back up and running without
having to do any flashing of the ROM?
Many thanks in advance
Click to expand...
Click to collapse
The ROM is the storage memory. There is only RAM and ROM... that is it. The ROM is partitioned into sections for radio, OS image, etc. Running Task29 will format the ROM, but will erase the OS image, so you will need to flash a rom after doing task29.
Richard_Bushby said:
Thanks for your reply! Just to make sure I've got this right:
The HD2 has:
448MB RAM - volatile / battery dependant memory that is used for program
execution just like in a PC
512MB "storage memory" - non-volatile memory where the windows system
files, program files, music files and "my documents" are stored. Kind of like
the HDD in a PC
512MB ROM - stores the operating system and factory files that are copied
to the "storage memory" in the event of a hard reset. These files can only
be changed by flashing a new ROM image.
A Hard Reset wont format the "storage memory", it will just replace certain
files and folders from the ROM image.
A smaller, or lite ROM image will result in more "storage memory" after a
hard reset
Have I got this basically correct?
If so, one last quick question:
Task29 formats the "storage memory" correct? So I should be able to Task
29 and then a hard reset will get things back up and running without
having to do any flashing of the ROM?
Many thanks in advance
Click to expand...
Click to collapse
Usually this is what I do. Run Task29. Then after it shows 100%, I hold the VOL DOWN button. Flash the ROM (I flash custom ROMS, you can flash Stock ROMS if you like) with the CPU +USB. After the ROM finishes and shows 100%, hold VOL UP+DOWN to do a hard reset.
Let the first round of ROM fully setup. Then do another hard reset after that. This fully wipes everything off for me and return me to a clean slate that is MUCH more cleaner than ever before.
This is the equivalent of a secure erase on an SSD using the Secure Erase from UCSD's magnetic research facility. It wipes out everything so clean, the police wont be able to trace it if they tried.
zarathustrax said:
The ROM is the storage memory. There is only RAM and ROM... that is it. The ROM is partitioned into sections for radio, OS image, etc. Running Task29 will format the ROM, but will erase the OS image, so you will need to flash a rom after doing task29.
Click to expand...
Click to collapse
So from what you're saying... if I copy a file into the My Documents folder, this effectively gets stored on ROM, right?
Richard_Bushby said:
So from what you're saying... if I copy a file into the My Documents folder, this effectively gets stored on ROM, right?
Click to expand...
Click to collapse
Correct. All your internal storage is on the rom.
hi every one after a hard work of 3 days i have successfully flashed Ra-Hero-V1.7.01 in my hero now i have to take the backup before rom changing there are following options which should i take and which restore my official hero ROM back when i required
1-Nand backup
2-Nand + ext backup
3-BART backup
4-back google files
kindly guide me which backup i should take to save my current official ROM ..and what are the functions of these different backups i m new to android phone
If you have App2sd than Choose Nandroid backup + EXT Back up Otherwise just Choose Nandroid back up 1st option Hope it helps
sunshine4u said:
hi every one after a hard work of 3 days i have successfully flashed Ra-Hero-V1.7.01 in my hero now i have to take the backup before rom changing there are following options which should i take and which restore my official hero ROM back when i required
1-Nand backup
2-Nand + ext backup
3-BART backup
4-back google files
kindly guide me which backup i should take to save my current official ROM ..and what are the functions of these different backups i m new to android phone
Click to expand...
Click to collapse
If its your still with the official ROM, I assume you didn't even create an ext partition yet.
Therefore, at this point you need the "Nand backup" option.
Assuming, you want to install a custom ROM with app2sd support (most custom ROMs), you will need to:
- backup the entire contents of your SD card to the computer (all data on card is lost in the next step!)
- repartition it through recovery, say to: 0 swap (unused), 512M ext2 (not ext3/4), and the rest for fat32.
- restore all files you backed up.
After you have made an ext partition and install a custom ROM, use "Nand + ext backup" to back it up.
Finally, restoring is always using the "Nand restore" option, regardless of which type of backup you made.
thanks a lot...
Every time that I flash a new NAND build (almost every day), I find myself at list one hour seating and installing all the apk files on my sd card.
Is there a way to install all the files on the first boot ? to save them on one folder and on the first boot android will install all of them ?
I know that in SD card builds it's possible.
Please advice.
No, that's not possible. It was a feature of SD builds only.
Why not use Titanium Backup to backup all your apps and data, and the restore them all with just 1 click (if paid - lots of clicks if not!)
Or keep your apps on a rom with ext partition support.
Backup in nandroid, wipe, install new rom, reboot cwm, restore backup where you can choose, select SD ext part.
Reboot, enjoy not having to install all your apk files
Sent from my HTC HD2 using XDA App