HL-DT-ST DVDRAM GSA-T20N ATA Device firmware - LG GSA-T20N DVD±RW Dual Layer Burner

SOURCE: HL-DT-ST DVDRAM GSA-4163B

*Tangent* After scouring the web looking for a solution to this problem, and I bet you this must be the case and problem for many an optical drive owner, regardless of brand or function (CD-ROM, DVD ROM, CD Writer, DVD Writer, Combo CD Writer / DVD ROM) but after busting my head trying to find the solution, some clever thinking solved the problem, where published articles on the web did not:

LG DVD Writer (HL-DT-ST DVDRAM GSA-4163B) no longer recognizes discs and no longer burns DVDs or CDs

So you have a DVD burner that, for the longest time, properly burnt discs and aided you in archiving absolutely everything that has ever been important in your life, and now, all of a sudden on a whim, the drive no longer recognizes discs (when placing a disc with data on the tray and closing it, Windows Explorer changes the label of the drive from a DVD-RAM Drive to a CD Drive and any efforts to view the contents of the disc produce the mocking-error message "Please insert a disc into drive X:" Furthermore, in Nero Xpress, Nero Burning Rom or Nero SmartStart, the screen inviting you to set burn speed, set a disc volume label, toggle MultiSession Disc or toggle Finalize Disc has a nice bright lit illuminated "Burn" label button inviting you to proceed, but any attempts to place a blank CD-R / DVD-R, DVD+R, DVD+R DL, whatever, into the disc tray and closing it fades out the "Burn" button and never illuminates it again unless the disc in the drive is ejected. This, of course, is irregardless of the disc access light blinking its friendly green accessing-goodness-message and coming to a stop as if everything was peachy upon first closing the disc tray.)

*Tangent* The few times this had occurred to me in the past (with completely different computers and computer configurations save the same DVD Burner drive) I would often start disabling and enabling drives in Windows Device Manager, and if that didn't work, deleting drive drivers in Windows Device Manager followed by rebooting and auto-reinstalling, and if that didn't work, disabling drives in the system's BIOS, and if that didn't work, fiddling with the power supply power leads and IDE interface ribbon cables and jumper settings (from master to slave to cable select) until finally the damn thing would kick in and start operating again. This time around though, nothing was working out. It had been two days of fiddling and the damn drive would not come back to me. I had even undone all the bindings of my drives in my PC case and tried the unit in other machines with the same result, and also tried it in a true MS-DOS environment using a CD ROM driver and MSCDEX with the same result. What this indicated to me was that, contrary to what many of the articles say online, that the problem is not software based like many would lead you to believe, but rather hardware based.

I read so many suggestions and not one of them sounded reasonable, considering that the drive had given me years and volumes of successful burns prior and I had already miraculously brought it back to life before: I was suggested everything from flashing the drive's CMOS to deleting lines in the system registry (regedit) to deleting and installing new ATAPI drivers to installing VERY suspect and dodgy executables that would miraculously fix things, to using different burn programs, to changing IDE Interface Ribbon Cables to changing entire power supplies, and my most hated suggestion of all, "the drive must be broken, but drive's are cheap these days anyway, just buy a new one." FOOLS! After careful elimination of possible causes, I ruled out anything that was software, operating system, or BIOS-slash-motherboard based. Sadly, unlike my pop, I know next to nothing about electronics, so my last hope was that it was a mechanical problem. Since the drive not being able to access standard discs with data on it was a clear indication of the problem, I booted in a MS-DOS environment using a Windows 98 Boot Disk, complete with CD-ROM support (these little f'ers are trusty when you get into trouble.) I called up the drive letter for my quote-unquote defective DVD Writer, placed the data disc in the drive, closed the tray, ran a simple DIR command and waited for the "device not ready" message. Once that came up (as expected), I ejected the disc tray, walked to my Grand Mother's sewing room, got a good ol sewing pin (no doubt created before the concept of home computers were even fathomable) closed the disc tray once again, ran the DIR command again, but this time, while the disc was trying to be accessed, I pushed the pin into the little emergency tray release hole, forcing the tray to eject just enough to grab onto with my fingernails. I then simply pressed the standard electronic disc eject button again, invoking a close of the tray, and low and behold, the directory contents of the disc came up. I didn't even have to run additional tests, I knew right then and there that the problem was a mechanical one with the closing of the drive (perhaps the gears were no longer coming into the proper position to place the motor hub onto the hole of the disc or the laser eye became stuck in a position that did not favour starting on the first track of the disc...who knows) Bottom line is, the thing now works as it always did, as intended.

QUICK SET OF STEPS TO REPRODUCE:
Pre-Requisits: Authentically pressed data disc that you do not care if it gets damaged (like an old outdated driver disc, AOL access disc, etc.) and a pin long and thin enough to get significant travel into the emergency release eject hole located below the disc tray (safety pins are a good choice, while thumbtacks and nails are not.)
1 - Boot PC with no disc in the troublesome drive
2 - Within operating system environment, open disc tray, place useless data disc on tray BUT DO NOT CLOSE TRAY
3 - Access a read function of the troublesome drive (in MS-DOS, navigate to the drive letter assigned, close tray with disc and type DIR or in Windows, double click My Computer, double click the troublesome drive's letter until the "please insert disc into drive X:" message comes up, and then close the tray with the disc
4 - While the disc is attempting to be accessed, in a straight manner and with pressure, push the pin into the emergency tray release eject hole until the tray pushes out physically
5 - Close the tray by means of the standard electronic eject button on the drive

-Video Game Junkie

SOURCE: hl-dt-st dvdram gsa-t40n ata device driver curupted

Problem occurs when vista registry entry is corrupted. The steps to resolve this are as follows:

• run regedit.exe
• navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
• Depending on your particular setup, you may have multiple entries for {4D36E965-E325-11CE-BFC1-08002BE10318}. If this is the case, find the one that says DVD/CD-ROM drives (under default)
• Once you have found the appropriate key, you will see an entry that says UpperFilters.
• Delete this key and then restart
• (NB: Do not delete any other 'UpperFilters' key that is not in the category of DVD/CD-ROM drives, otherwise you may get the BSOD.)

SOURCE: Latest Firmware for HL-DT-ST DVDRAM GSA-T20N DVD-Drive

Try to install automatic Firmware Uploadre
Download Here - http://uk.lge.com/support/download_soft.jsp
Its from LG Official Site so its safe

SOURCE: can the HL DT ST DVDRAM GSA-4040B burn dual layer discs

no it doesn't

Brian Sullivan

• 27725 Answers
• Posted on Jan 29, 2011

SOURCE: My computer has given me

until you no exactly what has caused the problem you cant fix
click start control panel administrive tools computer management then select event viewer depending on what operating sytem you have this may vary
extend the events there you will see errors in red you will no what exactly what the error was and at what time it occured you might have to uninstall then reinstall the program and its files
you could run the check disk utility
click start run type cmd then type chkdsk/r/f which will scan for and attempt to repair any bad sectors and automatically fix any corrupt files on your hard drive then defragment your hard drive or
control panel administrive tools,computer management ,disk management right click on your drive select properties click tools you should see click check now click start two boxes automatically fix files and scan for and attempt recovery of bad sectors place then a tick in both boxes then select check now,start should schedule this task when restart
or you could download a registry cleaner
also
click start control panel admistrive tools,computer management,device manager scroll down cd dvd rom drives right click you will see options to update driver,roll back driver,or
select properties general troubleshoot, select driver click to reinstall drivers click update driver or uninstall then reinstall
make sure that the cd-dvd burner is getting enough power test all leads that are attached to the dvd burner including electical extensions and make sure they have a secure connection or just replace them there might be bad/faulty or

if this does not fix the problem it might be a registry problem
Close all open programs

Click on Start, Run, and type regedit and press Enter
Click on the plus signs (+) next to the following folders

HKEY_LOCAL_MACHINE

SYSTEM

CurrentControlSet

Control

Class

{4D36E965-E325-11CE-BFC1-08002BE10318}

This folder is the DVD/CD-ROM Drive Class Description in the registry. Look for any of the following names in the right hand column.

Upper Filters

Lower Filters

Upper Filters.bak

Lower Filters.bak
If any of the above keys shown in step 4 are listed, right-click on them and choose Delete

After deleting the keys, close the registry editor
Reboot your computer
Open My Computer and check to see if your CD or DVD drives have returned. You may also want to open Device Manager and verify that the yellow exclamation and error code on the CD or DVD drive is gone.




hope this helps