block device name for cd-rom

I have installed debian on hard drive. Now I am trying to use deselect. I chose access method as cd-rom. I am being prompted the following: Insert the CD-ROM and enter the block device name what should I enter here? -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscrib

cannot use dselect

I am try to use dselect. When I choose Access, I am getting the following message: dselect:unable to open/create access method lockfile:permission denied I need suggestion how I can overcome this problem -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECT