Worked best SD card with Thonny

 This code worked in Micro python with Pi Pico: (After a lot of problems.)

 print(",,,xkchgvsdckhsgDigiKey0  ")

print("core Electronics How to setgggg up Pi Pico and Code with Thonny")

import machine

import sdcard

import uos

import os

# Assign chip select (CS) pin (and start it high)

cs = machine.Pin(9, machine.Pin.OUT)

# Intialize SPI peripheral (start with 1 MHz) Check it IS 1000000

spi = machine.SPI(1,

                  baudrate=100000,

                  polarity=0,

                  phase=0,

                  bits=8,

                  firstbit=machine.SPI.MSB,

                  sck=machine.Pin(10),

                  mosi=machine.Pin(11),

                  miso=machine.Pin(8))

# Initialize SD card

sd = sdcard.SDCard(spi, cs)

print(cs) 

# Mount filesystem

vfs = os.VfsFat(sd)

#uos.mount(os.VfsFat(sd), "/sd")

uos.mount(vfs, "/sd")

# Create a file and write something to it

with open("/sd/test01.txt", "w") as file:

    file.write("Hello, WORX22345 67!! SD World!\r\n")

    file.write("This is a test and seems to work@@01 A \r\n")

file.close()

# Open the file we just created and read from it

with open("/sd/test01.txt", "r") as file:

    data = file.read()

    print(data)

file.close()  

&&&&&&&&&&&&&&&&&&&&

I put in the silly file.write's above as well as the file.close() statements. (Not sure if they're required.)