Dvd recorder can't read the disc.

Original dvd disc,not copy or not another countries datas disc?Same country as the DVD player was bought and formatted Disc?Most likely the disc u trying to play it is in a difference formatted of recording or finalizing data codes inbeted by some patent coded program.Tries play many more other DVD discs,should work find,than the original disc,u trying to play have protected datas or difference format and not same as of ur DVD player main programming firmware.

It depends upon what type of data you want to copy onto a CD or DVD.
If you want to copy and play music in a CD player then it needs to be on a CD disc.
If you want to copy and play movie DVDs in a DVD player then it needs to be on a DVD disc.
If you want to backup data files then it can be on either CD or DVD discs (depending upon the amount of data to be stored on the disc - CD holds 700 Mb, single layer DVD holds 4.7 Gb, and dual layer DVD holds 8.5 Gb of data).
A DVD player can read both CDs and DVDs, but a CD player cannot read DVD discs.

This is a Samsung DVD recorder - I've had the exact same problem - By the way, don't you mean "this disc cannot be recorded" ? These DVD recorders are known to reject certain type of discs.

* Have you updated your Samsung with the latest firmware ?
http://www.samsung.com/ca/support/download/supportDown.do?group=&type=dvdplayers&subtype=recordable&model_nm=DVD-R155&disp_nm=DVD-R155&language=&cate_type=all&dType=D&mType=FM&vType=&prd_ia_cd=03010300&model_cd=&menu=download

Follow the instructions carefuly and please understand the risks involved in flashing your drive - Do not interrupt the process, it can take long.

* here are the brands of DVD-R I have used successfuly with this recorder int he past:

Taiyo Yuiden DVD-R 4x / 8x (the optical drives used in those recorders are outdated, their writing strategies are never up to date and may not recognize some type of discs)
Maxell DVD-R 4x / 8x
Verbatim DVD-R 4x / 8x

Try another blank disc - maybe it will accept it - if it keeps rejecting all your blank DVD-R no matter what brand, you have a bad drive inside your recorder - the samsung recorders are **** - I have ever since gotten rid of that piece of **** and now use a Sony HDR-780 HDD/DVD recorder, uses pioneer components and is great !

Avoid those lens cleaners - they can do more harm than good!

I hope this helps.

Try different brands of DVD-R, avoid the cheap generic **** - drives like best Taiyo Yuden & Verbatim media id codes - they should recognize Maxells, verbatims, sony, taiyo yuden, ritek. if it keeps spitting out all discs you use, you have a defective unit. The latest firmware on that drive should also help !

Good luck :)

Read your manual first to make sure the unit will do this.If it does chances are it won't record unless it has a decoder built in.Most VHS tapes have macrovision protection that prevents you from copying them.It will however,record homemade VHS tapes.There are decoders out there you can buy to enable you to copy VHS tapes.

Please refer to the http://www.fixya.com/support/t562814-hr_720_not_burn_dvr_r_media - it seems I have found a solution, maybe it can help also here

Its because you need a firmware update. The media you are currently using isn't recognized. I stumbled in here with the same problem. I haven't been able to find an update, so I will probably have to try a different brand of disc myself. The burner worked fine until I tried using a new pack of Verbatim discs.

certain discs will be ok then when u record something then try an play it it says th words no read then takes ages to get it out of th machine

Direct copy VCR to DVD:
- Insert VHS tape you want to copy
- Insert a recordable DVD disc
- Press DVD copy button on front panel or remote control (to DVD).
- To stop recording press the stop button.

IMPORTANT: If attempting to copy copyrighted material the Samsung DVD-VR320 will detect the encoding and will not allow the copy to be made.

I my DVD-HR735 wont recognise any discs at times, and is getting worse. I've now discovered (out of frustration) that if I tip the front up to between 30-45 degrees, it will play all the discs it says were unreadable. I've started jamming three dvd boxes under the front of the machine when i want to play dvds. 

The reason why you are having this problem is because you haven't finalized the disc. In able for you to play that Burned DVD that you have you need to Finalized the disc. Finalizing a recordable optical disc means writing the disc's lead-in (the Table of Contents or TOC) and lead-out information (blank data that fills up the unused space at the end of the disc) so that a DVD player will know where the various tracks begin and end. Without the TOC, a conventional DVD player will not be able to read the contents of the disc. Once the disc is finalized, no more information can be written to it. Finalizing takes about two or three minutes. To finalize a DVD-RW/DVD-R: 1. Press the Menu button with the disc stopped. 2. Select Disc Manager and press Enter or the right arrow. 3. Select Disc Finalize and press Enter or the right arrow. You will be asked twice if you are sure that you want to finalize the disc. Select Yes and press Enter. Once the disc is finalized, you cannot delete entries from the record list. After being finalized, the DVD-R/DVD-RW (video mode) operates in the same manner as a DVD-Video. Recorded discs must be finalized in order to play back in non-Samsung DVD players. A DVD-RW disc that has been recorded by DAO (disk-at-once mode) in a PC cannot be unfinalized. A DVD-RW disc that has been recorded in Video Mode on a non-Samsung recorder cannot be unfinalized by a Samsung recorder. A DVD-R disc cannot be unfinalized. Note: Finalization does not apply to DVD-RAM. If you cannot finalize a DVD-R or DVD-RW disc, make sure that Disc Protection is turned off. If you are still having difficulty, you may try calling technical support of SAMSUNG. Note: Do not turn the recorder off while it is finalizing the disc. Data on the disc will be damaged if the finalization process is interrupted.