I had to reformat my drive - then reinstall all the updates from Windows - now that im trying to install SP1 it keeps popping up with an error saying that "atapi.sys is open or being used by another program, close it and retry" I closed every program and process running that i could and tried renaming the file (which only led me to reformat again) Ive tried MS knowledge base and came up empty there, a few other boards and still no answer. Anyone know what ican do to end this problem so i can contiune? Thanx in advance

You have something interfering with this process and it's probably a trojan. I would suggest you wipe this install completely and try again, but disconnect from the internet UNTIL you get SP1 installed. Good luck, J. j e r u v y a t y a h o o d o t c o m

Well ive been discconected untill i go get the updates - i know its not a trojan - ive had Anti-virus software and Firewalls up and scans came up clean all the time - SCSI and IDE controllers are up-to-date on their drivers. i just dont understand this error - never has one file given me so much aggrivation :)

I had the same problem. In my case it was the virtualCD on Alcohol120%. I'd also heard this happens with Daemon Tools. So, if you have one of these you could try uninstalling it.

I had the same problem and it was Daemon To ols that cause it. I uninstall it,updated windows and then i reinstall daemon tools and both are working fine :)

ERROR: atapi.sys is open or in use by another application do a search on your computer for atapi or may look for it your self in this location C:\WINDOWS\system32\drivers once found, make a folder on your desk top and drag the file into this one new folder now you can update your xp with sp1 / sp2 once upgraded your may delete this file... dont worry! the sp1/spt installation will replace this file. ENJOY!!! Zahid@spacecomputers.com __________________ TWLFE