Install Linux via network ?
 

I have several clients, which all should be installed with Red Hat Enterprise 4.0. The clients have all the same hardware, so I want to boot them with a 3.5" disk (there is no CD-ROM) and they should be automatically installed by loading an image over the network. Everything fine in theory... But I don't know how to do it. "dd" isn't an option because it takes too much time. Every client should be installed within appr. 30 minutes.

Can you please help me and tell me what to do ?

Not sure about the floppy method, but if you feel up to using a PXE boot image and installing via network that way, it is quite possible to do it with System Installation Suite.

http://wiki.sisuite.org/

You will need some working knowledge on how to setup DHCP and TFTP, unfortunately.

Thank you for the hints ! I'll try it.