Ill be darned if I cant find my ghost manual.
(bet the wife moved it while cleaning)
So Ill answer this the best I can until she gets home tomorrow & I can check the manual to see if it lists
exact ratios.
I have a 30gb hd with two partitions, on the smaller
3.8gb partition I have my OS(windows) & I use the larger one for all my apps so I can restore an image of windows without losing my apps & savegames.
Ok, I have an image of a clean install of windows & NO DRIVERS, its size is
410mb.
(great for troublshooting drivers & swithcing to different Det drivers for my Nvidia card)
Now I have another image of that
3.8gb partition with drivers, favorites, email contacts, winzip & a bunch of other apps installed & the image file size is
502mb.
So as you can see, it depends on how much of the partition your creating an image of is empty / full , has an effect of the size of the image file.
These numbers are using MAXIMUM compression.
If I find my manual & it has ratios listed for each type of compression, Ill post it.
BTW: Dont forget to defrag your partition b4 you image it.