I had a similar but typical problem. I brought a Acer ultra slim laptop with external LG dvd writer to load OS if required from its CD cause it came with linux. What happened I lost that driver CD of LG in the huss fuss at the seller shop itself. Anyway I came home and connected the LG writer through USB port... enabled it in bios as boot drive. And everything goes fine as normal. OS installation got started as usual from my original Windows 7 installation disk. But suddenly half way between installation your installer asked for its driver CD & strictly refused to progress without it.
Now what I didn't understand ... it was going nicely with default driver... what happened to it halfway Then I have to copy it to usb drive from another machine then installed it from it. Now the problem is usb aint that safe from corruption as can be said about genuine installer CD. I went for LG support but there is no such driver there but a firmware for GP65NB60 (my drive too) but with SVG code NB60 instead of NB70 of mine. So that firmware upgrade don''t apply to my drive.
Now why I am writing it all over here cause there wasn't any as such problem if your installer didn't get unexpected flue in middle of things. It had done already half the work fine with it default driver... now what was the problem for it reading rest of the data from OS installer CD It could simply have let me skip that specific driver installation... No That stalled everything for me that day till I got it copied to usb drive and the original problem remains the same even now. :)
Wirecutter has been testing external optical drives since 2013, when they were quickly disappearing from most laptop computers. We also have decades of accumulated experience testing other kinds of storage, including USB flash drives and memory cards, external hard drives, internal and portable SSDs, and network-attached storage.
Finally out of frustration I tried a different plug which has a double usb (plugged both into imac) and then the normal plug that goes into the LG portable DVD writer and VOILA - worked like a charm :-) ... same was true of my Transcend hard drive!!!
Fix your DVD driver quickly and automatically by using DriverFix! It will also fix all your driver problems. Check Price Visit Website 2. Run Hardware and Devices troubleshooterPress the Windows key + S, type cmd, and select Run as administrator under Command Prompt.Type the command below and hit Enter: msdt.exe -id DeviceDiagnosticWait for the command to finish running and apply any recommended fixes.The built-in troubleshooter on Windows can detect and fix many problems on your PC. For example, it has proved effective in dealing with the LG SP80NB80 DVD writer drive not working issue.
Optical disc drives are an integral part of standalone appliances such as CD players, DVD players, Blu-ray Disc players, DVD recorders, certain desktop video game consoles, such as Sony PlayStation 4, Microsoft Xbox One, Nintendo Wii U, Sony PlayStation 5 and Xbox Series X and also in older consoles, such as the Sony PlayStation 3 and Xbox 360, and certain portable video game consoles, such as Sony PlayStation Portable (using proprietary now discontinued UMDs). They are also very commonly used in computers to read software and media distributed on disc and to record discs for archival and data exchange purposes. Floppy disk drives, with capacity of 1.44 MB, have been made obsolete: optical media are cheap and have vastly higher capacity to handle the large files used since the days of floppy discs, and the vast majority of computers and much consumer entertainment hardware have optical writers. USB flash drives, high-capacity, small, and inexpensive, are suitable where read/write capability is required.
Optical drives for computers come in two main form factors: half-height (also known as desktop drive) and slim type (used in laptop computers and compact desktop computers). They exist as both internal and external variants.
Half-height optical drives operate upwards of twice the speeds as slim type optical drives, because speeds on slim type optical drives are constrained to the physical limitations of the drive motor's rotation speed (around 5000rpm) rather than the performance of the optical pickup system.
Because half-height demand much more electrical power and a voltage of 12 V DC, while slim optical drives run on 5 volts, external half height optical drives require separate external power input, while external slim type are usually able to operate entirely on power delivered through a computer's USB port. Half height drives are also faster than Slim drives due to this, since more power is required to spin the disc at higher speeds.
Half height drives fasten the disc using 2 spindles containing a magnet each, one under and one above the disc tray. The spindles may be lined with flocking or a texturized silicone material to exert friction on the disc, to keep it from slipping. The upper spindle is left slightly loose and is attracted to the lower spindle because of the magnets they have. When the tray is opened, a mechanism driven by the movement of the tray pulls the lower spindle away from the upper spindle and vice versa when the tray is closed. When the tray is closed, the lower spindle touches the inner circumference of the disc, and slightly raises the disc from the tray to the upper spindle, which is attracted to the magnet on the lower disc, clamping the disc in place. Only the lower spindle is motorized. Trays in half height drives often fully open and close using a motorized mechanism that can be pushed to close, controlled by the computer, or controlled using a button on the drive. Trays on half height and slim drives can also be locked by whatever program is using it, however it can still be ejected by inserting the end of a paper clip into an emergency eject hole on the front of the drive. Early CD players such as the Sony CDP-101 used a separate motorized mechanism to clamp the disc to the motorized spindle.
Slim drives use a special spindle with spring loaded specially shaped studs that radiate outwards, pressing against the inner edge of the disc. The user has to put uniform pressure onto the inner circumference of the disc to clamp it to the spindle and pull from the outer circumference while placing the thumb on the spindle to remove the disc, flexing it slightly in the process and returning to its normal shape after removal. The outer rim of the spindle may have a texturized silicone surface to exert friction keeping the disc from slipping. In slim drives most if not all components are on the disc tray, which pops out using a spring mechanism that can be controlled by the computer. These trays cannot close on their own; they have to be pushed until the tray reaches a stop. 
Near the laser lens, optical drives are usually equipped with one to three tiny potentiometers (usually separate ones for CDs, DVDs, and usually a third one for Blu-ray Discs if supported by the drive) that can be turned using a fine screwdriver. The potentiometer is in a series circuit with the laser lens and can be used to manually increase and decrease the laser power for repair purposes.
Current optical drives use either a tray-loading mechanism, where the disc is loaded onto a motorized (as utilized by half-height, \"desktop\" drives) tray, a manually operated tray (as utilized in laptop computers, also called slim type), or a slot-loading mechanism, where the disc is slid into a slot and drawn in by motorized rollers. Slot-loading optical drives exist in both half-height (desktop) and slim type (laptop) form factors.
There were also some early CD-ROM drives for desktop PCs in which its tray-loading mechanism will eject slightly and user has to pull out the tray manually to load a CD, similar to the tray ejecting method used in internal optical disc drives of modern laptops and modern external slim portable optical disc drives. Like the top-loading mechanism, they have spring-loaded ball bearings on the spindle.
A small number of drive models, mostly compact portable units, have a top-loading mechanism where the drive lid is manually opened upwards and the disc is placed directly onto the spindle (for example, all PlayStation One consoles, PlayStation 2 Slim, PlayStation 3 Super Slim, GameCube consoles, Nintendo Wii Mini, most portable CD players, and some standalone CD recorders feature top-loading drives). These sometimes have the advantage of using spring-loaded ball bearings to hold the disc in place, minimizing damage to the disc if the drive is moved while it is spun up.
External drives were popular in the beginning, because the drives often required complex electronics to institute, rivaling in complexity the Host computer system itself. External drives using SCSI, Parallel port, USB and FireWire interfaces exist, most modern drives being USB. Some portable versions for laptops power themselves from batteries or directly from their interface bus.
Fixed-length packet writing (on CD-RW and DVD-RW media) divides up the disc into padded, fixed-size packets. The padding reduces the capacity of the disc, but allows the recorder to start and stop recording on an individual packet without affecting its neighbours. These resemble the block-writable access offered by magnetic media closely enough that many conventional file systems will work as-is. Such discs, however, are not readable in most CD-ROM and DVD-ROM drives or on most operating systems without additional third-party drivers. The division into packets is not as reliable as it may seem as CD-R(W) and DVD-R(W) drives can only locate data to within a data block. Although generous gaps (the padding referred to above) are left between blocks, the drive nevertheless can occasionally miss and either destroy some existing data or even render the disc unreadable. 153554b96e