【超小型 Linux 开发套件Quantum Tiny Linux】解决使用64G卡系统启动经常失败问题
<div class='showpostmsg'><h1> </h1><ol>
<li ><b>TF卡访问失败</b></li>
</ol>
<p >开始使用64GB TF经常出现如下打印，系统卡死</p>
<p >[ 13.599666] sunxi-mmc 1c0f000.mmc: data error, sending stop command</p>
<p >[ 14.605617] sunxi-mmc 1c0f000.mmc: send stop command failed</p>
<p > </p>
<p > </p>
<p >换了16GB的TF卡</p>
<p > </p>
<p > </p>
<p >先按照之前的方式烧录系统到16GBTF卡，</p>
<p >然后按照如下方式复制系统到EMMC</p>
<p >sudo fdisk -l</p>
<p >查看mmcblk1的sectors数为30777344</p>
<p > </p>
<p >sudo dd if=/dev/mmcblk0 of=/dev/mmcblk1 bs=512 count=30777344 & sudo watch -n 5 pkill -USR1 ^dd$</p>
<p > </p>
<p > </p>
<p > </p>
<p >mmcblk1是emmc</p>
<p >mmclkb0是tf卡</p>
<p >其中 count=30777344</p>
<p > </p>
<p > </p>
<p > </p>
<p >sudo diff -s /dev/mmcblk0 /dev/mmcblk1</p>
<p > </p>
<p >启动顺序是:TF卡有系统总是从TF卡启动，否则从EMMC启动。</p>
<p > </p>
<p >之后拔掉TF卡从EMMC启动，系统稳定很多了，基本不会出现失败了。</p>
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