Bill Greiman

The timeout likely occurs in one of two places, [here](https://github.com/greiman/SdFat/blob/master/src/SdCard/SdioTeensy.cpp#L705) or [here](https://github.com/greiman/SdFat/blob/master/src/SdCard/SdioTeensy.cpp#L723). You can try adjusting them [here](https://github.com/greiman/SdFat/blob/master/src/SdCard/SdioTeensy.cpp#L36). I don't want to change them since some older cards are detected...

> Any idea what the difference is between the Teensy 3.5 and 4.1 is on this front? The controllers are very different. Notice all the defined macros in the driver:...

> It would be great if these variables were made externally available or were an optional parameter on the begin() function, but understand that's probably not something you'd want to...

Sorry I didn't get back sooner. I am in am in an area of California that had a three day power outage. For a long term applications like this I...

The main way a FAT file system is corrupted is when a crash happen during directory update or cluster allocation. FAT and exFAT were not designed to be crash safe....

Journaling file systems are complex to implement. FAT/exFAT is not good base for such a file system. Arduino is a not suitable for building a reliable system if crashes are...

I don' know of any use of SdFat with ESPAsyncWebserver. I avoid using ESP32/ESP8266 because SdFat often conflicts with the ESP file system.

Window may have formatted it GPT. SdFat only accepts cards that comply with the SD Association Standard. You can try the [SD Standard Formatter](https://www.sdcard.org/downloads/formatter/) or [this example](https://github.com/greiman/SdFat/blob/master/examples/SdFormatter/SdFormatter.ino). I do this...

I don't plan to support non standard formats. If you need that use the ESP SD library. There are now dozens of Board Support packages like ESP and I can't...

I have no idea what block zero is. It is not an MBR. > part,boot,bgnCHS[3],type,endCHS[3],start,length > 1,0X73,0X73,0X20,0X61,0X6E,0X79,0X20,0X6B,1948285285,1701978223 > 2,0X73,0X74,0X61,0X72,0X74,0XD,0XA,0X0,0,0 This much is ASCCII: ` "ss any key to start\r\n"` I...