I am running Kalyway 10.5.3 on my Dell Inspiron 1525. Everything was working perfectly until I tried to install two different .kext files (AppleACPIPlatform and ApplePS2...something...it was for the trackpad). However, the ACPIPlatform install was corrupted and now I cannot boot Mac OS X. I still have the install CD, so I can access my hard drive from terminal, but when I try to delete the .kext file, this is what I get:
So, I tried chmod, but I was not able to make the file writable so I could delete it.
Cannot remove directory: system file is read-only