I have figured out the following steps to shrinking your sysNAND backup without altering any info ...
1) Open your sysNAND backup in NxNandManager
2) go to SYSTEM, then Advanced Save, use "Crypto: none", "Passthrough zeros: yes", and Dump.
3) go to USER, repeat same procedure.
4) Now open sysNAND backup in HacDiskMount
5) go to SYSTEM, don't enter any keys, restore from file and pick the exported file from step 2.
6) go to USER, same as before, except pick file from step 3.
7) You can now mount the partitions as read only to test if the files are there ...
Now if you compress your backup it should be much smaller ... (mine went from 29 GB to 1.4 GB)
I would advise against ever formatting the SYSTEM or USER partitions in Windows as it messes them up.
You could further reduce it by removing files that are not needed, but most likely
that will cause red flags as the system will show up more clean that it should when online ...
1) Open your sysNAND backup in NxNandManager
2) go to SYSTEM, then Advanced Save, use "Crypto: none", "Passthrough zeros: yes", and Dump.
3) go to USER, repeat same procedure.
4) Now open sysNAND backup in HacDiskMount
5) go to SYSTEM, don't enter any keys, restore from file and pick the exported file from step 2.
6) go to USER, same as before, except pick file from step 3.
7) You can now mount the partitions as read only to test if the files are there ...
Now if you compress your backup it should be much smaller ... (mine went from 29 GB to 1.4 GB)
I would advise against ever formatting the SYSTEM or USER partitions in Windows as it messes them up.
You could further reduce it by removing files that are not needed, but most likely
that will cause red flags as the system will show up more clean that it should when online ...
Last edited by Escape1975,