Hacking Discussion 1-bit mode

Gagi_Astvats · Jul 6, 2020

Once upon a time I changed SD Card and saw something new...

Tried to full format (into FAT 32) with Rufus and then check sd with h2testw (it shows no problems with card). But it did not help. Other sd cards works fine. Problem only with this one (Lexar 512 GB). It works normaly before, problem appeared litteraly from nothing. Can't get what's wrong.

mathew77 · Jul 6, 2020

Did you check your cardreader Switch module?

Gagi_Astvats · Jul 6, 2020

mathew77 said:
Did you check your cardreader Switch module?

For what? Other sd cards on that switch works fine it can't be cardreader

susi91 · Jul 6, 2020

Gagi_Astvats said:
Once upon a time I changed SD Card and saw something new...

View attachment 216334

Tried to full format (into FAT 32) with Rufus and then check sd with h2testw (it shows no problems with card). But it did not help.

I would check the write speed of that card, 1bit mode should be rather slow (sooner/later as the RAM gets filled up). If its slower than your other cards, the card is defective.

Gagi_Astvats · Jul 6, 2020

susi91 said:
I would check the write speed of that card, 1bit mode should be rather slow (sooner/later as the RAM gets filled up). If its slower than your other cards, the card is defective.

Before that problem everything was normal, but now games loads three times slower on that sd.
There is no way to fix it? I using that sd almost few months

mathew77 · Jul 6, 2020

Gagi_Astvats said:
For what?

You must check first your Switch cardreader module for a possible failure.

Gagi_Astvats · Jul 6, 2020

mathew77 said:
You must check first your Switch cardreader module for a possible failure.

But how there can be a failure when other sd cards works normally?

susi91 · Jul 6, 2020

Gagi_Astvats said:
Before that problem everything was normal, but now games loads three times slower on that sd.
There is no way to fix it? I using that sd almost few months

I would check the write speed in a card reader on a PC.
1bit mode sounds like there isn't a connection at DAT1 + 2, could be a hardware damage in the card, idk.

Gagi_Astvats · Jul 6, 2020

susi91 said:
I would check the write speed in a card reader on a PC.
1bit mode sounds like there isn't a connection at DAT1 + 2, could be a hardware damage in the card, idk.

sd card reads with 67,2 MByte/s and writing with 35,1 MByte/s

mrmole · Jul 6, 2020

I have been through this - use clean function of diskpart in cmd and then rebuild the MBR by reformatting the card to FAT32 (MBR) with the free version of easeUS Partition, or similar software. This should work if your card has logic problems, otherwise that might be a hardware issue.

Gagi_Astvats · Jul 7, 2020

mrmole said:
I have been through this - use clean function of diskpart in cmd and then rebuild the MBR by reformatting the card to FAT32 (MBR) with the free version of easeUS Partition, or similar software. This should work if your card has logic problems, otherwise that might be a hardware issue.

Thanks, I'll try it!

Hacking Discussion 1-bit mode

Active Member

Lovin' life.

Active Member

Well-Known Member

Active Member

Lovin' life.

Active Member

Well-Known Member

Active Member

Active Member

Active Member

Similar threads

Popular threads in this forum