Backup emuNAND?

Discussion in '3DS - Flashcards & Custom Firmwares' started by kalimero, Dec 5, 2013.

  1. kalimero
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    kalimero Uncle Rupee

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    I think it's a good idea to make a backup in case nintendo patches online access and update service with emuNAND. Don't want to lose 6.3 if my SD Card goes corrupted.

    I did a backup of the whole SD Card with Win32 Disk Imager but it's too slow to do it regularly (it's 4 GB every time). Then I tried to backup only the 1 GB partition with a Partition Manager but because it's unallocated it doesn't let me. Would allocate the partition corrupt emuNAND data?

    Is there any program that can create an image of an unallocated "partition"?
     


  2. n1ghty

    n1ghty GBAtemp Regular

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    I will upload my tool this evening, just need to get everything running again, got some new SSDs from Amazon Cyber Week and installed a clean system :lol:

    In the meantime you can boot a linux live cd and use dd
     
    kalimero and octopus like this.
  3. aireca

    aireca GBAtemp Regular

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    Win32 Disk Imager Takes 2-3 minutes for me and it is a 8GB card, you should buy a better SD instead.
     
  4. Cyan

    Cyan GBATemp's lurking knight

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    Win32DiskImager is really backing up the EmuNAND partition?
    Doesn't it lists only windows' recognized and lettered partition instead of the full device?

    If you select only the letter, it's the FAT partition that you are backing up, not the full card.
     
  5. aireca

    aireca GBAtemp Regular

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    It should, my backup is 8GB, the space available for the SD is 7GB, so yes, it should be grabbing the other 1GB, anyway if there is a special tool it should be better to use the special tool instead.
     
  6. Armadillo

    Armadillo GBAtemp Psycho!

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    Win32imager also seems to backup my whole card. Image is full 3.X (whatever a 4GB card comes in as).

    Not tried restore it yet. What will happen if I write the image to an 8gb card. Will it lose the rest of the space that an 8GB has over a 4GB? until formatted or will it just restore it and leave the rest of the space correctly.
     
  7. aireca

    aireca GBAtemp Regular

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    The rest of the space of the 8GB card disappears because the partition is formatted to 4GB.
     
  8. iCEQB

    iCEQB GBAtemp Advanced Fan

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    You can also use USB Image Tool (usbit), and let your SD card list in device mode, this will make a 1:1 backup of the whole card, including bootsectors and all partitions not visible to windows.
     
  9. aireca

    aireca GBAtemp Regular

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    I made another backup with USB Image Tool and it has the same CRC as the Win32DiskImager Backup, so yes, backup it's working on both software.
     
  10. drfsupercenter

    drfsupercenter Flash Cart Aficionado

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    Am I correct in thinking that Win32DiskImager is basically the equivalent of "dd" in UNIX?

    I usually use dd for this sort of task, I've made backups of other cards, flash drives, even entire hard drives before and restored them to different disks/drives. The only reason I'm even using Win32DiskImager is because Gateway said to :)
     
  11. sudeki300

    sudeki300 GBAtemp Advanced Fan

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    as i only have the 1 SD card at the moment, am i right that i could backup the emuNAND to my pc / laptop. then if i wanted format the SD card and go back to 1.2 gateway launcher (if i wanted to) then when i wanted to copy the emuNAND image back onto the SD card and be good to go.......................sudeki300
     
  12. kalimero
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    kalimero Uncle Rupee

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    You are probably right ;) The combination of the bundled 4GB Lexar Class 4 and my old notebook i use (i have no other standard SD Card reader) gives me only 2 MB/s in Win32 Disk Imager.
     
  13. Armadillo

    Armadillo GBAtemp Psycho!

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    Damn :(. I want to jump over to an 8GB card, but with the few reports of real NAND being updated, I don't want to run the setup again, just in case it is a bug, rather than user error.

    Anyway to just get the raw data off and move that across.


    Probably the reader. I use the standard XL lexar card, and it reads at 19MB/s on my transcend rfd8.
     
  14. bkifft

    bkifft avowed Cuthwaldian

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    As FAT32 is a resizable partition type it should work: write the 4GB backup to the 8GB card, run a partition tool (parted, gparted, PartitionMagic, whatever) on it and resize the FAT32 partition to use the whole free space behind it.

    Raspberry Pi folks often need to do this, so you could look up a tutorial from them (although they mostly resize ext3/4 partitions, it works in the same way).

    edit: completely forgot the disk management tool in newer Windows versions, which should work fine too. Just don't touch the 1GB unallocated space before the FAT32 partition, as that is where the emuNAND data resides.
     
  15. Armadillo

    Armadillo GBAtemp Psycho!

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    Resizing works great. The windows management tool,however, does not. It won't let you extend it. Apparently that can only extend ntfs or unallocated (at least that's what I read).

    EaseUS partition manager worked fine though.

    Made image of 4GB card with Emunand on with win32diskimager. Wrote image to 8GB card. Extended into unallocated space using EaseUS and it works fine. Tested on the 3DS, Emunand is there and working :).
     
  16. shanefromoz

    shanefromoz GBAtemp Advanced Fan

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  17. gamesquest1

    gamesquest1 Nabnut

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    This thread has nothing really to do with what your asking actually

    As for the transferring dlc across 3DS consoles, you just have to update emunand to 7.1 and use the system transfer
     
  18. shanefromoz

    shanefromoz GBAtemp Advanced Fan

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    Are you saying I can just format emunand on new console then use system transfer and all dlc will work fine?
     
  19. gamesquest1

    gamesquest1 Nabnut

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    Afaik it should, you may have to set emunand up again once system transfer has finished as I have heared doing system transfer will mess up emunand, but you can set it back up and 're-download any eshop purchases from eshop once it's set back up properly
     
  20. shanefromoz

    shanefromoz GBAtemp Advanced Fan

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    Hmmm ok thanks.
    Ok so I setup emunand.
    Do transfer from old 3ds xl to new.
    Should I just move sd card from old 3ds and insert in new 3ds after the transfer is done?
    If emunand does not work setup again.