Hardware How do you take a hardmod NAND backup using a MAC?

[BaconSocks]

I saw a post (http://wiki.gbatemp.net/wiki/3DS_Flashcart_FAQ) which shows how to backup the emuNAND using "dd". Can this also be used to take a sysNAND backup?

 

[dark_samus3]

I saw a post (http://wiki.gbatemp.net/wiki/3DS_Flashcart_FAQ) which shows how to backup the emuNAND using "dd". Can this also be used to take a sysNAND backup?

Assuming you have the NAND hooked up to the computer, absolutely. You'll need to know the "file" that represents the NAND

 

[BaconSocks]

Well I'm in the middle of performing a hardmod on my 2015 n3ds xl. i've already built the sdcard cable device. Unfortunately, I ripped the ribbon of the lcd screen, and waiting for the spare part to come in the mail.

But as far as using 'dd', i'm not familiar with this, so I don't even know how to start. I was going to make a VM of a windows box, and forward the usb to it so i can use win32diskwriter but if i can do it natively on a mac, i'd rather do that.

 

[dark_samus3]

Well I'm in the middle of performing a hardmod on my 2015 n3ds xl. i've already built the sdcard cable device. Unfortunately, I ripped the ribbon of the lcd screen, and waiting for the spare part to come in the mail.

Well if you need any help feel free to tag me once you get everything ready

 

[Ninoh-FOX]

In Linux terminal type:
$sudo dd if=/dev/sdb1 of=nand.bin (for backup)
, and
$sudo dd if=nand.bin of=/dev/sdb1 (for restore)

 

[mashers]

Check out this post I made. It details the commands you need to read and write the NAND image on a Mac. The last paragraph explains how to find out the device name representing your card reader connected to the 3DS NAND.

https://gbatemp.net/threads/reading-writing-nand-using-dd-under-mac-os-x-linux.411059/#post-6001425

 

[dark_samus3]

In Linux terminal type:
$sudo dd if=/dev/sdb1 of=nand.bin (for backup)
, and
$sudo dd if=nand.bin of=/dev/sdb1 (for restore)

First, this isn't Linux, second you CANNOT assume that /dev/sdb1 is going to be his NAND, that might be a flash drive or some other storage media (assuming that the sdx structure works on a Mac which it seems that it doesn't)

 

[mashers]

(assuming that the sdx structure works on a Mac which it seems that it doesn't)

The principle is the same, but the naming convention is different. In any case, you are correct that the commands listed by Ninoh-FOX for Linux will absolutely not work on a Mac. Also they do not include the blocksize command which significantly increases the rate at which the data are read from/written to the NAND. Also on a Mac you have /dev/diskx and /dev/rdiskx. Using /dev/rdiskx is much faster as it provides lower-level access to the device.

 

[BaconSocks]

thank you very much guys, I will give a status report once I get my n3ds all working again!