Changes

Dual Micro SD Card Adapter

751 bytes added, 22:47, 12 August 2020

[[File:IMG_1811-W800.jpg|700px]]

==FAQ==

Q: Why my TF card cannot be recognized? There are some errers such as 'mmc0: error -110 whilst initialising SD card'.

A:

1. Make a backup of /boot/cmdline.txt

sudo cp /boot/cmdline.txt /boot/cmdline.txt.bak

2. Edit cmdline.txt file

sudo nano /boot/cmdline.txt

#Find this word in the line '''root=PARTUUID=xxxxxxxx-xx''', then replace 'root=PARTUUID=xxxxxxxx-xx' with ''''root=/dev/mmcblk0p2''''

#(those x'es are placeholders, actually they are letters and numbers)

# Make sure that file is a single line like it was before.

3. Adding '''sdhci.debug_quirks2=4''' to the end of /boot/cmdline.txt. Keep it all on one line.

Or refer to: https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=274554&sid=58e823d579fa5fcbeadde87584069ab6

[[Category: Product Manual]]

[[Category: Raspberry pi]]

5,039

edits