On 29 April 2008, "John" <jses2 ATgmail.com> wrote: >Message: 42 > Date: Tue, 29 Apr 2008 17:43:43 -0400 > Message-ID: <006901c8aa42$1a387450$0700a8c0 at ethan27> >Also please post you fstab and mtab files. It may be helpful in pointing out > the problem. Also have you run yum update on the machine? (fstab and mtab files posted previously) I ran "yum update". The box is now 100% up to date. The problem did not go away. On CentOS 5, the Teac DV-516D DVD/CD reader can mount a CD, without any problem. However, it sees a DVD as blank. On Windows XP, it works perfectly, with CD and DVD media. I sent an email to Teac Tech Support, asking for the URL where I could download their Diagnostics for the drive and got this reply: >Unfortunately, no diagnostics are available as checking the read capabilities within >Windows XP is most than acceptable. If the drive does not work properly within >Windows or any other PC, then the drive needs to be repaired or replaced. Disappointing and I will probably never purchase Teac components again. The box is dual boot (WinXP & CentOS 5). Years ago, I purchased SystemSuite 4. I installed that and ran their generic diagnostics on the Teac DVD/CD reader and it passed. I am not positive the Teac drive is working perfectly, but I have a high level of confidence in it. My belief is that somewhere, there is either no support for the Teac DV-516D in CentOS 5, or, that something required to automount a DVD in it is not configured properly. It can mount a CD without any problem.