Hacking Wii U Nand backup - Any way to make it smaller?

ZeldaWW

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there are many differences between the wii U and the switch nand backup, on the switch you are able to compress it heavily
but on the wii U, after waiting for 2 hours for the nand backup i tried to use winrar in order to make all the files smaller.

there was almost no change at all, the nand RAR file is 27gigs big

it there anything else that can be done to decrease its size? i wanted to put the backup on a free cloud service but almost none offer 27gb free.
 

ZeldaWW

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but for my internet speed 27gigs of upload its just too much.
i wonder why its so heavy, if most of the stuff must be empty, as it had a factory reset
 

Captain_N

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Place your nand backup on a removable HDD,sd card,flash drive, burn on a cd/dvd/bd-r keep a copy on your pc. 27 gigs is not large nowadays when we have 12TB drives....
 
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