I have a 128GB Samsung EVO SDXC card. When prepped properly with guiformat my switch shows a boot.dat? screen (SXOS).
I should note that I copied, file for file, from my working micro SDHC card.
--------------------- MERGED ---------------------------
I did select this awhile back, I believe. However, I thought that was only for exFAT compatibility.... not SD"X"C compatibility. Am I wrong on that?
--------------------- MERGED ---------------------------
I have not downgraded, no. This is a legit 1.0 that I obtained. It's never been online and bricmii reports 1 burnt fuse.
There is no real reason to why I'm still on 1.0 other than there could be advantages to it down the road, as others have mentioned. I'm content to keep it offline atm.
--------------------- MERGED ---------------------------
I've tried this many times and always receive SXOS's boot.dat screen. See my previous reply.
Effectively, exFAT support
is SDXC support. There is no physical difference between SDHC and SDXC, the only difference is how they are formatted out of the box, and what requirements are set by the SD Association for being allowed to put the SDXC compatible logo on a product. Namely, they require the product to be exFAT compatible if you want to use the logo. Understandably so, as people would be pretty mad to find out that they can't put a full HD movie or whatever on their new tablet or smartphone because they have to use FAT32 and the file is too big to fit, or they can't record longer than 15 minute clips on their camera/smartphone because the manufacturer did not bother to implement exFAT support and it's not like that feature is the sort of thing that would be advertised or that most people would even know what it means, so you'd never know if what you were getting would work with it, unless you already knew to look for that and had the foresight to do research beforehand (which many sadly don't)
I'm not sure why SX OS can't find boot.dat, but I can think of a couple of possible causes, either there is a bug in SX OS, it's user error, or you have a bad or fake card.
If indeed you copied over every file from the old card as is, then we can rule out user error.
I don't remember seeing anyone else with this issue, so the most likely reason is a bad SD card. Which leads me to my question, where did you buy the card (if Amazon then was it from a 3rd party?)
Fake SD cards are all over, and what they do is fake a higher capacity than is really on the card, and when you try to write data past the actual capacity, either the newly copied data becomes corrupted (most common) or previously written data becomes overwritten with the new data, corrupting older files (less common)
Sometimes the capacity is legitimate from a legitimate factory, but the card failed quality control and instead of being thrown away, some unscrupulous employees ship it anyway and take the money.
Sometimes you just have really bad luck and a product is DOA, it's rare but it can happen with any electronic device.
eBay and any website based in Asia are especially notorious for selling fake cards, but 3rd party Amazon and Newegg sellers also do this. Often the packaging or product itself does not look quite right when compared to a genuine product, but some fakes are quite well made on the outside.
Even if you buy memory cards "Sold and shipped by Amazon", that's not a guarantee either, because as someone recently pointed out to me, Amazon lets 3rd party sellers store stock in their warehouse, and Amazon does not keep this stock separate from their own. If a 3rd party seller sells the same product as Amazon themselves, all of the stock of that product gets lumped into one.
Regardless of where you bought it, the first thing you should try is formatting the card and putting only the SX OS boot.dat on. If that works, you know it's most likely a fake card. If it doesn't, it could still be bad (failed QC) or DOA.
The next thing you should do is run a scan with h2testw, this will take a while so be prepared to leave it overnight if you start in the evening:
https://3ds.hacks.guide/h2testw-(windows).html
If h2testw says the card is good, that leaves the last possibility, that this is a bug in SX OS itself, at that point I don't have any suggestions other than to switch to Atmosphere. SX OS has a history of being riddled with bugs,
TX do not do a thorough job of testing each new release, and every time they add a new feature, it seems to introduce new bugs.
Atmosphere is not without its bugs either, but they are usually quicker at fixing them than TX, so that when a new version of Atmosphere releases (which usually come with a warning that there may be bugs), you simply have to hold off for a couple of days, and if there are no reported bugs, the release will be OK'd and no longer considered as a beta. If there are bugs, they will post a status update describing the bugs, so you can choose if you want to update anyway ignoring the bugs, or give it a couple more days which is usually enough for any major bugs to be fixed.
TX can take weeks to fix bugs, and they don't post any status updates, they just post a new release once the bug is fixed. For example, in one of the recent updates, they had fixed an issue with Stealth Mode where it wasn't blocking Nintendo servers properly. This could in the worst case result in people getting flagged for a ban, and since they didn't inform people, instead choosing to fix it and mention it in the changelog, people didn't get any warning that they should turn off wifi, it might already be too late for many users by the time they released the fix. That is a pretty major bug and in my opinion one they should have informed everyone about right away.
People are free to use what they like, but I personally recommend everyone switch to Atmosphere instead, to avoid bugs like this, and not be dependant on a company that will only continue providing updates as long as they're making considerably more money than the hours and trouble they are putting in are worth.
View attachment 192545\
IIRC SDXC support come with 3.x.x, I think. You would need to update your sysnand to get that working properly.
I haz 3
SDXC support was introduced along with the 3.0.0 firmware, but has always been a separate download, it's not included with any firmware because Nintendo has to pay licensing for each Switch that installs it, and even though it's included on every game cartridge, the system won't install it unless you've gone online to receive the exFAT update already (or done so through unofficial means)
