BRN:Software:Build and Distribution:OpenWGT-FAQ

Q: Why does the system sometimes hang while reboot?

A:

1. On newer busybox versions the command after a shutdown keyword from the /etc/inttab file will be executed, e.g.:

    ::shutdown:/sbin/halt

   So a halt action will be followed by a reboot and the node will only executes the halt action.
2. A reboot is implemented by triggering a watchdog event. After writing to flash, the hardware watchdog failes in some cases.
   An intensive read of the flash seems to solve that timing problem:

   $ cat /dev/mtdblock/3 > /dev/null
   $ cat /dev/mtdblock/2 > /dev/null
   $ reboot -f

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