ROM Hack NAND 7-zipped size 327mb! - Is that correct?

suzsuzuki · Jul 31, 2018

Hello,

I just made a NAND Backup of my never used NS. The full size is 29.1GB but after I 7-zipped (in the fast config) I got a 327Mb 7z file! Is that correct or do I need to do the NAND backup again?

Reploid · Jul 31, 2018

Well, firmware update is about that size.

yusuo · Jul 31, 2018

Well it's supposed to be 29gb-ish so no, that does not seem right at all. Done mine last night and it took over an hour to do

suzsuzuki · Jul 31, 2018

yusuo said:
Well it's supposed to be 29gbish so no, that does not seem right at all. Done mine last night and it took over an hour to do

It took me an hour too and I got a 29GB file, but I'm talking about the compressed size using 7-zip.

Lumince · Jul 31, 2018

Most of the nand is just 0'd out. The rawnand is the entire nand dumped. Since you have 0 games on it, Yes this is normal when it gets zipped. Unzipping will give you the entire nand back again. @suzsuzuki

--------------------- MERGED ---------------------------

My other switchs nand is 1.2 gbs when compressed, but that is because of the games and saves on the internal. So yes its ok

yusuo · Jul 31, 2018

Sounds like I was wrong then. Might try and compress mine

Lumince · Jul 31, 2018

yusuo said:
Sounds like I was wrong then. Might try and compress mine

Yep

Saves alot of space

tehlers · Jul 31, 2018

suzsuzuki said:
Hello,

I just made a NAND Backup of my never used NS. The full size is 29.1GB but after I 7-zipped (in the fast config) I got a 327Mb 7z file! Is that correct or do I need to do the NAND backup again?

It's not unlikely to be correct. My new switch's emmc backup was around 365MB in gziped size.

Lumince · Jul 31, 2018

my 4.1.0 clean backup is like 630mbs zipped xD wonder whats up with that.

tehlers · Jul 31, 2018

Biff627 said:
my 4.1.0 clean backup is like 630mbs zipped xD wonder whats up with that.

Did you backup at the very beginning, no config, no wireless, no game inserted? As soon as you put data into the filesystems, even when the data is deleted afterwards, the "0"'s are gone and a copy of the whole partition will result in bigger compressed images.

Lumince · Jul 31, 2018

tehlers said:
Did you backup at the very beginning, no config, no wireless, no game inserted? As soon as you put data into the filesystems, even when the data is deleted afterwards, the "0"'s are gone and a copy of the whole partition will result in bigger compressed images.

Nah probably not. This switch connected to the internet once and I switched the white background to the black. but all wellll

suzsuzuki · Aug 1, 2018

Thank you guys

fpw76 · Aug 2, 2018

Biff627 said:
my 4.1.0 clean backup is like 630mbs zipped xD wonder whats up with that.

Try compressing with 7-zip instead. Zip itself is quite old and not as efficient as 7zip.

My 4.1 clean backup (7-zip) was definitely below 400mb.

techhit · Aug 3, 2018

Mine is 493MB compressed into 7z format (3.0.1 stock)

ROM Hack NAND 7-zipped size 327mb! - Is that correct?

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