Hi
i have a question about using a file on you SD cart
normally you open a file SD.open..... than write some data in it , and when you done close the file logFile.close()
But in my program it is opened at 00:00h and closed at 23:55h,
If i reset or powerdown between that time, the arduino will NOT give a logFile.close() .
Could the file then be corrupted or get corrupted, or

of will the pointer be lost , where file is ended (last written character)
i have done this a couple of times , not closing file and after start up the arduino opened it same file again for writing data , no problem, no currupt file.. is there some other program closing the file , or is thr SD cart protected against this
if a file could get corrupted , if there a check for this
geetings