UUIDs on drives (was Hibernate on batery low)

[Rashkae]

Smoot Carl-Mitchell wrote:

> 
> UUIDs are suppose to be universally unique.  Generating a random 16 byte
> number is probably sufficient to make a UUID universally unique.  The
> probability of a duplicate is 1 chance in 2**128 which is very unlikely.
> 4 bytes is not going to be universally unique.  I am not sure why vfat
> partitions only have 4 byte UUIDs.  
> 

Has to be said, sorry.

Four bytes should be enough memory for anyone.