NT workstations – logons and directories


Logging in


Log in using your User Name and Password. Check that the Domain is set to IC – you won’t be able to log in otherwise!

Can’t Log in?


This can happen for a number of reasons. Here are some tricks if you can’t log on to the NT machines.

- you could be ‘over quota’

Log on to one of the Unix machines and get a command prompt (Toolchest>Desktop>Open Unix Shell)

Type quota –v – this shows how much disk space you have left. If this is less than zero you need to delete some files. The following commands should get you going.

ls –l lists your files and directories
rm deletes files
rm –r deletes directories complete with contents
cd dir to go down a level to subdirectory dir
cd .. to go up a level


This can easily happen if you use other clusters around the college and change various settings while you are there. They get saved back to your profile which might make it unreadable by our machines.

Log on to one of the Unix machines as before

cd <username>.pds change to your profile directory
rm ntuser.dat delete this file, which contains your registry settings

Try again

If you still can’t get in, back to the Unix and then

rm -r <username.pds> This removes the complete profile – you will lose your desktop settings and anything you have saved in this directory if you have to do this. Best not to keep anything valuable in your .pds folder.

- you’ve had an account for years but can’t log in. However you have never logged in before.

If you fall into this category you must do the following – it sounds a bit weird but it works

Log into the Unix (see above)

Type passwd to change your password. You can set it to what it was before if you like. Honest.

Follow the instructions.

Log out of the Unix and try again. Note that you might have to wait a few minutes for this to take effect.



Directory structure


When you log in your “home directory” is mounted as <username> on ‘argon.ch.ic.ac.uk’ or dive ‘H’. This is 25Mb in size. As well as anything you care to store there, it contains your desktop settings and, if you use Eudora or Outlook, your saved mail, as well as equivalent files created if you have used the Unix machines.




An important folder to be aware of is <username.pds>. As well as your desktop settings, this contains files you have stored to the desktop. Microsoft applications like to save files in here. It is however best to save files elsewhere in your ‘H’ drive. <username>.pds is downloaded each time you log on, and the bigger it gets the longer it takes to log on. If it gets too big the logon process might time out and you won’t be able to log on at all.