Re: Disappearing DVD drive--not an upper or lower filter issue




You can try these things & see if that helps:-

1. Try to update the firmware of the drive.

2. Check the BIOS if the drives are getting detected

3. Run the following patch:

<!-- /* Font Definitions */ @font-face {font-family:&quot;Cambria
Math&quot;; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-alt:&quot;Calisto
MT&quot;; mso-font-charset:0; mso-generic-font-family:roman;
mso-font-pitch:variable; mso-font-signature:-1610611985 1107304683 0 0
159 0;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2
4; mso-font-alt:&quot;Arial Rounded MT Bold&quot;; mso-font-charset:0;
mso-generic-font-family:swiss; mso-font-pitch:variable;
mso-font-signature:-1610611985 1073750139 0 0 159 0;} /* Style
Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal
{mso-style-unhide:no; mso-style-qformat:yes;
mso-style-parent:&quot;&quot;; margin:0in; margin-bottom:.0001pt;
mso-pagination:widow-orphan; font-size:11.0pt;
font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;
mso-fareast-font-family:&quot;Times New Roman&quot;;
mso-bidi-font-family:&quot;Times New Roman&quot;;} p
{mso-style-noshow:yes; mso-style-priority:99;
mso-margin-top-alt:auto; margin-right:0in;
mso-margin-bottom-alt:auto; margin-left:0in;
mso-pagination:widow-orphan; font-size:12.0pt;
font-family:&quot;Times New Roman&quot;,&quot;serif&quot;;
mso-fareast-font-family:&quot;Times New Roman&quot;;} .MsoChpDefault
{mso-style-type:export-only; mso-default-props:yes;
font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;
mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;
mso-bidi-font-family:Calibri;} .MsoPapDefault
{mso-style-type:export-only;} @page Section1 {size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in; mso-header-margin:.5in;
mso-footer-margin:.5in; mso-paper-source:0;} div.Section1
{page:Section1;} --> Copy the following into a text editor (notepad)
and save with the filename CDGONE.REG. Merge the resulting file into the
registry to clear entries which may conflict with the new software. And
make sure that you save it on the desktop.



REGEDIT4

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}]
"UpperFilters"=-
"LowerFilters"=-

[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdr4_2K]
[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdralw2k]
[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdudf]
[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UdfReadr]
[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdr4_xp]
[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdudf_XP]
[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UdfReadr_xp]


--
tanuj_chadha
.