Fedora 5, and RedHat 4, Update 3

[Margaret_Doll]

I have downloaded years of Fedora and RedHat isos , written them to 
disc and used them for installlations.

I have not been able to write FC 5 disc2 and disc5,  RedHat ES 4, 
Update disc2 and disc4 successfully.  They all  fail the installation 
test prior to starting the installation.  I have checked the sha1sums 
for the  isos that I have.  They are fine.
Any suggestions as to why the installation tests are failing.

	Installing on Dell Optiplex 620s.  I have successfully done this 
before with a previous version of RedHat