maemo.org - Talk - Returning N900 as it was

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- Nokia N900 (https://talk.maemo.org/forumdisplay.php?f=44)

- - Returning N900 as it was (https://talk.maemo.org/showthread.php?t=87859)

Re: Returning N900 as it was

Quote:

Originally Posted by reinob (Post 1294190)

You said

so a lot of people (including me) are wondering if you can provide more information about this.

/etc is part of the rootfs, which AFAIK is completely re-written by NOLO during flashing.

/opt itself is also part of the rootfs, but is usually bind-mounted to /home/opt, which is part of the eMMC. I would also expect that eMMC flashing would completely rewrite the eMMC, but have not actually investigated how this flashing is exactly done (it's not done by NOLO, but by Maemo itself.)

so if you know something we don't (still) know, please share it :)

There are 2 images for flashing; rootfs and eMMC. The eMMC image actually contains very little. It's 200MB size is made up from the free mp3 songs, 2 videos and the user guide in every conceivable language. When you flash eMMC you wipe it in its entirety. NOTHING survives.

rootfs contains the meat. Now this is the clever bit, when you run an n900 after flashing the rootfs AND the eMMC the n900 knows it is the first time it has been run after a reflash (by setting a flag in a file) and creates /opt at boot time. See the events.d 'run once optification' script thing.

So, flash both eMMC and rootfs and the device will be nuked.

Re: Returning N900 as it was

I am going to reflash my eyes I guess, for I thought I was reading a comment by _vi when I commented previously.

Code:

sudo eyeflasher1.2 -F --remove "previous_impressions_0.1.fremantle" -R "new_image_correct_usernames" -f

Re: Returning N900 as it was

Quote:

Originally Posted by vi_ (Post 1294515)

So, flash both eMMC and rootfs and the device will be nuked.

Exactly. That's why anthonie, you (presumably) and I (for sure) want additional information from michaaa62, who wrote:

Quote:

Edit: This may sound complicated, but lots of setting and even applications survive a flash in /etc and /opt folders.

Re: Returning N900 as it was

I hate to do it, but it seems, i have to chew my words.

I was under the impression, that changes i made earlier did survive the flash, like ssh settings and preenv games. BUT i do not find any evidence after the latest flash of the fiasco image...

Must admit, i spoke too soon, and wrong i were!

Re: Returning N900 as it was

Yeah, Eat your words! EAT IT!

It should be noted that if you ONLY flash rootfs, most of your settings and data survives as it is stored on the eMMC and and the n900 does not go through the create /opt process again (the flag is still set as it is stored on the eMMC).

Re: Returning N900 as it was

How To Hard Reset The N900 To The Factory State

^ This is a very user friendly guide. Anyone can do it.

source: The Handheld Blog

Re: Returning N900 as it was

Quote:

Originally Posted by HELLASISGREECE (Post 1294610)

How To Hard Reset The N900 To The Factory State

^ This is a very user friendly guide. Anyone can do it.

source: The Handheld Blog

Taken from http://wiki.maemo.org/Updating_the_firmware

Re: Returning N900 as it was

Quote:

Originally Posted by thedead1440 (Post 1294612)

Taken from http://wiki.maemo.org/Updating_the_firmware

Ah, it's the same? copy paste?

anyway, yeah! this one

**I think my link has it more... "simplified". At least to my noob eyes : )

Re: Returning N900 as it was

Quote:

Originally Posted by michaaa62 (Post 1294584)

I hate do it, but it seems i have to chew my words.

I was under the impression, that changes i made earlier did survive the flash, like ssh settings and preenv games. BUT i do not find any evidence after the latest flash of the fiasco image...

Must admit, i spoke too soon, and wrong i were!

It's OK :)

Let me save you a little: flashing (in all forms, I *believe*) does NOT wipe the /dev/mtd2 partition (where kernel oopses are stored).