怎样解决UT4412BV03开发板android4.4系统不能挂载SD卡

怎样解决UT4412BV03开发板android4.4系统不能挂载SD卡 UT4412BV03开发板Android4.4系统不能挂载SD原因分析, Android中需要修改如下几个文件才能正常挂载SD卡 1. device/samsung/ut4412/conf/fstab.ut4412 中添加如下 +/devices/platform/dw_mmc/mmc_host/mmc0 auto vfat defaults voldmanaged=sdcard:1 +/devices/platform/s3c-sdhci.2/mmc_host/mmc1 auto vfat defaults voldmanaged=extsd:auto +/devices/platform/s3c-sdhci.3/mmc_host/mmc2 auto vfat defaults voldmanaged=extsd1:auto +/devices/platform/s5p-ehci auto vfat defaults voldmanaged=udisk:auto 2.device/samsung/ut4412/conf/init.ut4412.rc 中添加如下内容 mkdir /storage/sdcard 0775 system system mkdir /storage/extsd 0775 system system + mkdir /storage/extsd1 0775 system system mkdir /storage/udisk 0775 system system mkdir /storage/udisk2 0775 system system symlink /storage/sdcard /mnt/sdcard symlink /storage/extsd /mnt/extsd + symlink /storage/extsd1 /mnt/extsd1 symlink /storage/udisk /mnt/udisk symlink /storage/udisk2 /mnt/udisk2 mkdir /mnt/media_rw/sdcard 0700 media_rw media_rw mkdir /mnt/media_rw/extsd 0700 media_rw media_rw + mkdir /mnt/media_rw/extsd1 0700 media_rw media_rw + mkdir /mnt/media_rw/udisk 0700 media_rw media_rw + mkdir /mnt/media_rw/udisk2 0700 media_rw media_rw export EXTERNAL_STORAGE /storage/sdcard - export SECONDARY_STORAGE /storage/extsd:/storage/udisk:/storage/udisk2 + export SECONDARY_STORAGE /storage/extsd:/storage/extsd1:/storage/udisk:/storage/udisk2 symlink /mnt/sdcard /sdcard symlink /mnt/extsd /extsd + symlink /mnt/extsd1 /extsd1 symlink /mnt/udisk /udisk symlink /mnt/udisk2 /udisk2 service fuse_extsd /system/bin/sdcard /mnt/media_rw/extsd /mnt/extsd 1023 1023 class late_start disabled + +service fuse_extsd1 /system/bin/sdcard /mnt/media_rw/extsd1 /mnt/extsd1 1023 1023 + class late_start + disabled +service fuse_udisk /system/bin/sdcard /mnt/media_rw/udisk /mnt/udisk 1023 1023 + class late_start + disabled # eth0 service dhcpcd_eth0 /system/bin/dhcpcd -ABDKL 3. .../frameworks/base/core/res/res/xml/storage_list.xml 中添加如下内容 android:primary="false" android:allowMassStorage="true" android:removable="true" /> +