I went to remove rockbox from my sansa by removing the .rockbox folder and using the sansapatcher binary choosing uninstall.
Now when I turn on my device the start screen just blinks repeatedly, pressing the power button shows boot information
Rockbox boot loader
Version: 4.0
Sandisk Sansa c200
Partition 0: 0x06 1939
Partition 1: 0x84 20 M
Loading Rockbox...
Can't load rockbox.mi4
File not found
and this just blinks repeatedly. I have run the sansapatcher again choosing the Uninstall option twice more to make sure i did actually do it... each time it says it was removed...
bash-3.2# ./sansapatcher
sansapatcher v0.6 with v4.0 bootloaders - (C) Dave Chapman 2006-2007
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
[INFO] Scanning disk devices...
[INFO] c200 found - /dev/sdh
[INFO] Reading partition table from /dev/sdh
[INFO] Sector size is 512 bytes
[INFO] Part Start Sector End Sector Size (MB) Type
[INFO] 0 1017 3972095 1939.0 FAT16 (0x06)
[INFO] 1 3972096 4013055 20.0 OS/2 hidden C: drive (0x84)
Enter i to install the Rockbox bootloader, u to uninstall
or c to cancel and do nothing (i/u/c) :u
[INFO] Bootloader removed.
Press ENTER to exit sansapatcher :
bash-3.2#
The unit will boot into the regular sansa mode when connected via USB, and will play music from that mode, but it no longer has a radio option as it once did...hopefully just a by product of this malfunction.