Generally, a clean install should be done unless you have good reasons not to. Upgrades regularly fail, either because of third party software that is not compatible, or malicious software that breaks in the new install.
Backup your user data, format and install the new one. Especially if you are going from 98 to XP. You'll definitely want the NTFS file system, and you can't get that with an upgrade.
clean installation
two types of installation: clean installation upgrade installation,phased installation,remote installation, image deployment and parallel installation
clean install formats your hard drive eliminating the virus and doesn't in an upgrade
yes, in only one condition! you must have your windows xp CD + its CD KEY If you have these, then you will be able to make a clean/upgrade installation
A "clean install" is one that completely replaces all settings and files of a previous installation, rather than perform an upgrade.
in-place upgrade
In-place upgrade
yes.. choose upgrade windows option while installation..
It depends on what kind of hardware you have. There is no direct upgrade from 98 to Vista. You'll have to basically format the drive and do a clean installation.
difference between the upgrade
A clean installation is a installation where the hard drive is reformatted and windows is installed fresh from the DVD or CD it came from.
You must have an installation disc to upgrade Windows 98.