I answered 2-4 months since thats what has been the average over the couple years ive had this machine. But, ill almost never format another drive for quite some time:
Just spent the day reinstalling and tweaking out a new instal of WinXP...hacking it to get everyones favourites, email, adress books, ICQ, my documents, desktop, etc all into one folder on a partion (same drive, less hassle) other than the OS ones. 98SE+apps (from a previous image set up in similar fashion....been dual booting, but exclusively using just XP, for over a year now though) on a small 2.5GB FAT32 'c' partition. XP on a 10GB NTFS 'd', and a 62GB NTFS storage partition. And on the old drive i havent cleared out yet, 3 more partitions of similar setup except only a 30GB storage bit (only45GB vs 80GB on new drive) but all FAT32.
In the morning (well, its 3:30am...so we'll say in the afternoon

) ill drop into dos armed with Ghost 2002 and make images of the 98 and XP installs and then make up a set of bootable cds. From there on, backup and 'format+reinstall' will take the form of copying the aforementioned folder to the 2nd drive (which will soon be reduced to 2, partitions, small FAT32 and big NTFS) and also to a cd, and then ghosting the image set for the first 2 partitions. This will leave me with a full clean install with all my apps, and because of the way its set up, ill boot to find all my email, favourites, desktop, documents, ICQ, etc exactly as i left them and just continue on working as if nothing had happened. Total time to backup and 'clean install' = ~25mins
