absolutely. this is referred to as cloning.. recently we are trying to com up with a reliable way of doing this..
but untill ive done more testing re; cloning process, i would reccommend u simply reinstall to ensure 100% proper installation.
i have seen some errors occur when cloning mac os 9 from a partitioned drive.. im trying to figure out how to do this without any errors.. or rather how to instruct others to do this
without them having difficulty + frustration + errors

if u really want to go ahead and try to clone, i use disk utility inside of mac os x..(or a specific cloning app such as superduper or carbon copy cloner) to create a backup .dmg of the os
adn then format the new installation media, if u are interested in cloning that same drive again for backup purposes in the future i reccomend using a moderate size disk such as a 64gb ssd or a 80gb sata drive
and not partitioning the drive, (making the disk one partition of 100% its size) and formatting it to mac os extended (non-journalled, journalling is an osx technology and shouldnt be present on any disks tha twill be accessed via mac os 9 as this can cause problems.. if u are doing a dual boot osx system i make all my systems non-journalled even on the mac os x partition its not neccessary at all)
after the destination partition is formatted i would use the fresh drag install on our site (here ->
http://macos9lives.com/smforum/index.php?topic=1035.0)
and download DOWNLOAD LINK 2 (OS X Format), unstuff this file on osx (you may have to download stuffit expander for panther ->
http://www.stuffit.com/guide/General/GetExpander.html this page reccomends StuffIt Expander version 10.0.2 for Mac OS 10.3 panther) so visit this page to finally download that version ->
http://www.stuffit.com/mac-expander-download.html and select StuffIt Expander 10.0.2 (.dmg) OS X 10.3 - 10.3.9 stuffit is a pain in the ass;)
finally use stuffit expander to extract the .img.sitx then double click the .img file, it will mount to your desktop same as an external cd or disk would in osx.. then simply drag the files there to the new disk that you formatted to Mac os Extended non journalled and your new installation is ready to boot into. go to System Preferences -> and select start up disk and choose mac os 9.2.2 on the partition as your startup disk and restart.
http://macos9lives.com/smforum/index.php?topic=306.0 this thread is one discussing how to add sata to a g4
if money is no object and u want the ultimate performance we reccomend nothing else other then a 64bit pci card (such as the
http://www.firmtek.com/seritek/seritek-1ve2plus2/ or
http://www.firmtek.com/seritek/seritek-1v4/) from seritek that will offer up to 533mb/s
giving u the absolute best disk performance in mac os 9 possible . (possibly to achieve the ultimate fastest speed tho you would have to use some 3rd party raid to combine two disks into one to use the full bandwidth of the card, if you want to get technical but u can disregard this info becaues the card will work plenty fast with just 1 drive connected normally aswell)
if u are out of slots or you want a more cost effective solution that will still perform great
see the adapter in the particular post by mactron
http://macos9lives.com/smforum/index.php?topic=306.msg1072#msg1072i believe this adapter can be used in both directions.. ie: to add an IDE drive to a sata system, and to add a sata drive to an IDE system.
mactron? can u confirm this?
in his post hes explained that he was using his with a samsung ssd i believe.