How to determine update kernel if success?

[Edward King]

I use Linux 7.3 ,and I update the kernel,use following commands:
#rpm -Uvh modutils-2.4.18-3.7x.i386.rpm
#rpm -ivh kernel-2.4.20-28.7.i686.rpm
Then I restart my computer (single CPU), I found linux creates three directories in /lib/modules,they are 2.4.18-3, 2.4.20-28.7 and 2.4.18-3smp ,there is many files in them,but there is a flicker red "build" in every directory of them. I want to know if  I update kernel of Linux is success?

Thanks in advance!
Edward
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