[Help-bash] .bash_history lost

[Manuel Reimer]

Hello,

I usually update my system using a VT terminal on my linux box. After 
doing so, I just enter "reboot" to get sure I'm running the updated 
software.

Today this seems to have killed my .bash_history somehow. After 
rebooting and logging in as "root" again, my .bash_history was shown as 
zero sized file and all my previous commands are lost.

How can something like this happen? Is it a bad idea to enter "reboot" 
in a shell if I don't want to corrupt the history file?

Thanks in advance.

Greetings,

Manuel