Difference between revisions of "Dual Micro SD Card Adapter"
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[[File:IMG_1811-W800.jpg|700px]] | [[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/mmcblk0p22''' | ||
+ | #(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: Product Manual]] | ||
[[Category: Raspberry pi]] | [[Category: Raspberry pi]] | ||
<comments/> | <comments/> |
Revision as of 22:44, 12 August 2020
Overview
Dual Micro SD card adapter; Not only for raspberry but also others
Can insert dual micro sd card;
It's convenient to use two kind of rasbpeberry pi os;
Note: Please toogle to another card via switch after your turn off your device;
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/mmcblk0p22 #(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
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