If you only have one disk and one partition,
I would spend your time making sure you have your P/C in
good shape hardware wise,
and all the current drivers installed,
to reduce the SP2 install risk.
If you can not backup to a CD or second partiton / drive,
and something does go wrong,
all those driver intall and any licensed program packages
you downloaded, e-mail PST fles,
and the 266MB IT SP2 file will be gone.
If the disk is bad find out now.
This means you are staring over.
Do a Chkdsk from computer, tools tab and check both boxes.
re-boot and let the disk be scanned complertly.
Create a folder called BKUPSP1
Run a disk intensive program, NTBAckup to this folder for
the a C: partiton, SSI, and under the +C: folders,
deselect tthe BKUPSP1 folder. Run wuth the compare after
option to insure readable, in advanced tabs.
Then do it again and call the backup file "FreeSpacefor
SP1Scrub.bkf"
You can delete it just before install of SP2.
This will tell you that your disk is good and that the
next GB of space is good. Now delete the
file "FreeSpacefor SP1Scrub.bkf" just before you install
( turnoff off AV, disconnect from net, D-click IT 266 MB
file and don't turn on / off any appliacinces.
Risk is limited now to internal hareware or incompat
programs which will need to be fixed or upgraded anyway.