问题
actually I try to install busybox on my HTC Desire. Therefore I try to copy a busybox-binary to /system/bin. So I remounted /system with rw:
mount -o rw,remount -t ext3 /dev/block/mmcblk1p21 /system
After this I didn't get a "Read-only file system"-error. But now I'm experiencing "Permission denied" when trying to push the file to /system/bin. I also tried pushing my file to /sdcard and then move this to /system/bin, but this doesn't work either:
$ mv /sdcard/busybox /system/bin
failed on '/sdcard/busybox' - Cross-device link
Some ideas, how to solve this problem?
回答1:
Do a mount to check if the device really was remounted as RW.
The same error happened to me, then I simply made a cp orig dest and then a rm on orig, weird but seams mv behaves this way.
回答2:
Mounting is not enough, you have to run as root (this is the reason for permission denied). This is how I push busybox:
adb root
adb remount
adb push busybox /system/bin
I run into some devices that you need to remount with mount -o remount,rw /system and not with adb remount.
回答3:
Not sure but since you asked for ideas I'll mention that I never specified the -t option.
mount -o remount,rw /system
always worked for me
回答4:
mv just moves a hardlink within a single filesystem. If you want to move files between two filesystems you need to copy and then delete the original. e.g.
if ( cp -R /sdcard/busybox /system/bin ); then
rm -fR /sdcard/busybox
fi
回答5:
If some command is not working, try putting busybox in front of it. (if installed)
f.ex.
root@android:/ # mv /sdcard/androidLTheme/bootanim/bootanimation.zip /system/media/
failed on '/sdcard/androidLTheme/bootanim/bootanimation.zip' - Cross-device link
root@android:/ # _
but
root@android:/ # busybox mv /sdcard/androidLTheme/bootanim/bootanimation.zip /system/media/
root@android:/ # _
来源：https://stackoverflow.com/questions/10864907/android-adb-copy-file-to-system-permission-denied