While working on one of my server I noticed that there are no partitions listed under "fdisk -l" command. However the machine is working just fine. Wanted to know following things if anyone can help. I executed the command using root account. 

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1. What does missing partitions signifies. As everything was working fine. ?
2. How to reproduce such scenario ?

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Does it means ,something is wrong with my hardware ? After long google learning I found some cases where /proc/partitions corruption can cause such error. However files under /proc cannot be modified so I cannot simulate the fault ? 

Any help, suggestion , similar experiences are welcome ? Any dirty way would also be helpful as I need this simulation for testing. 

root@myserver 525>fdisk -l  

root@myserver 526>  

root@myserver 526>sfdisk -l  

root@myserver 527>