thanks
Hi there,
I've just registered to say a big thanks for the above reply.
I recently installed Linux (Ubuntu 'Dapper Drake') on a slave drive which was working well.
I have WinXP Pro SP2 on my master drive and the auto-installed Linux grub gives me the option of which to load at boot (default-Linux).
Both O/S's were working well together and I had rebooted succesfully around 20 or so times, switching between O/S's over the last 36+ hours since I originally succesfully installed Linux.
However, I attempted to load WinXP and the same error message popped up entitled 'Windows Product Activation' saying: "Some files are missing or damaged. You cannot log on at this time. Please use your installation CD to reinstall or repair Windows. Error Code:0x80040507"
Now, I did as instructed and booted the PC using my original WinXP installation disc, I launched the recovery console and logged into Windows (dos screen) as Administrator, but was unsure of what steps to take next as there were no options available.
It turned out, after reading your reply, that by making my WinXP drive accessible via my Linux drive, I set the drive as 'read only' to prevent any problems. I wasn't aware, at the time, what '0222 0 0' was going to do to the drive!!!
I've now reset the permissions to '0 0 0 0', corrected the respective files and folders' read/write permissions in the Windows folder and everything has loaded as it should have.
I posted my problem on three well known major help forums and none of them returned a reply anywhere near as helpful as this one. In fact, on two of them, including MS, there was no reply at all.
Therefor, a big thanks very much once again.
ps: if you're still active on here - i see the original post was some time ago - please confirm so as if you don't mind, I have one or two other question regarding what seems to be a fixed, but much slower system. thank you very much.