What is the difference between bdxl discs and m-discs ?

Ah, this is fairly straightforward:"BDXL" refers to the Blu-ray specification for quad layer, 100GB discs. You can read about that here: https://en.wikipedia.org/wiki/Blu-ray_Disc_recordable#Version_4.0.E2.80.94RE_4.0.E2.80.94.28BDXL.29"M-Disc" refers to the actual technology employed in the recording layer. In this case, M-Disc capable discs must be written by M-Disc capable writers, but instead of changing the color of the disc's dye, or changing its phase, these M-Discs and burners actually engrave the data into the disc in a series of pits and lands. M-Discs also come in all typical sizes; 4.7GB DVDs, 25GB, 50GB & 100GB Blu-day recordables. You can read about this here: https://en.wikipedia.org/wiki/M-DISC

Just bought a blu-ray m-disc drive. will the burned m-disc be readable by a standard dvd drive/player? thanks

I just burned several BDXL 100gb's. They are marked with Blu-Ray logo and open read etc fine with the same Blu-Ray drive I burned with. Regular dvd drive does not see the disc. I am going to try a Blu-Ray only external drive - will update.

Can someone recommend a drive that successfully burns the bdxl m-discs? my pioneer bdr-2209 is only successful about 2 out of 5 discs.

Yes. I've had excellent results on Mac OS X with the LG HL-DT-ST BD-RE WH14NS40. I bought mine in an external USB3 enclosure from OWC, but I'm quite sure that any you find here would work just as well. I've had a 100% success rate with the 25GB discs.

Sorry for furthur question. Is the 25gb model with branded surface also made from Taiwan?Thanks a lot.

Hi Shih,Yes, Verbatim M-Disc BD-R 25GB 4X with Branded Surface - 25 Pack Spindle 98909 is made in Taiwan.If you have any other question please contact our Tech Support line: 800-538-8589. Thank you for your interest in our products.

ASIN	B011PGT2FQ
Best Sellers Rank	#99,490 in Electronics ( See Top 100 in Electronics ) #5 in BD-R
Box Contents	Verbatim BD-R XL optical disc
Brand	Verbatim
Brand Name	Verbatim
Colour	Blue
Customer Reviews	4.0 out of 5 stars 8 Reviews
Format	Blu-ray
Global Trade Identification Number	00023942989127
Item Weight	0.02 Kilograms
Item Weight Unit of Measure	0.02 Kilograms
Manufacturer	Verbatim Americas, LLC
Media Speed	4x
Memory Storage Capacity	100 GB
Recording Capacity	10 Hours
UPC	023942989127
Unit Count	1.0 Count
Write Speed	4x

Verbatim 98912 M-Disc BDXL 100GB 4X with Branded Surface - 1pk Jewel Case, Blue

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