some external drives that I capture to split the avi file into 4 gb pieces. I checked the preferences in the capture window and it should't be doing this. Any suggestions as how to bypass this?
A drive can't control video size, it's your capturing software that determines length of video data.
I capture soley to external IDE drives in firewire enclosures. Never had a problem. After always having capturing problems with Vegas's native capturing software I switched to free WinDV. Never had a problem with it since. Just make sure you select avi2 in the vid settings. You can get it here: http://windv.mourek.cz/