General information
Mount Rainier is a standard that provides background formatting and defect management for storage on CD-RW and DVD+RW. This makes rewritable discs far easier to use and allows the replacement of the floppy. In the near future, native Operating System support for Mount Rainier is available. Click here to learn more about Mount Rainier and EasyWrite, how to implement Mount Rainier, its promoters and contributors, Frequently Asked Questions and interesting links.
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Mount Rainier specifications update (June 2004)
The Mount Rainier specifications for DVD+RW and CD-RW have been revised. Click here for more information.
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How to sign up as adopter and obtain the specifications
If you want to use Mount Rainier in your product and get access to the specifications to develop your products, a (free) license is required. This can be obtained by signing up as an adopter for CD-MRW and/or DVD+MRW. There is a separate adopters agreement for CD-MRW and DVD+MRW. In return you will get a password to access the specifications, which can be downloaded from this website.
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EasyWrite
EasyWrite is the marketing logo for Mount Rainier compliant drives. Philips created the EasyWrite name and logo to facilitate the marketing and promotion of the Mount Rainier solution. Adopters of MRW can use the name and logo, under the condition that the promoted products are tested and validated. Click here for information about the logo and its usage, and the EasyWrite compliance- and robustness tests.
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Which rewritable drives are EasyWrite qualified?
To see which CD-RW and DVD+RW recorders have passed the EasyWrite validation tests, click on the button below, select Mount Rainier Drive from the drop-down menu and press search. Please note that the drive models available on the market may have different firmware versions. It is the drive vendor's responsibility whether or not to make the EasyWrite feature available for end users.


Drives that support Mount Rainier
CD-RW drive
1. Lite-On LTR-52246S firmware version 6S0E
CD-RW drive produced by Lite-On IT Corporation, Taiwan.
2. Lite-On LTR-52327S firmware version QV4F
CD-RW drive produced by Lite-On IT Corporation, Taiwan.
3. Hitachi-LG Data Storage GCE-8483B firmware version 1.04
CD-RW drive produced by Hitachi-LG Data Storage, Korea.
4. Samsung SW-252S firmware version sm05
CD-RW drive produced by Samsung Electronics Co., Ltd. , Korea.
5. Sony CRX216E firmware version PDT8
CD-RW drive produced by Sony Corporation, Japan.
6. Lite-On SOHR-5238S firmware version 4V28
CD-RW drive produced by Lite-On IT Corporation, Taiwan.
7. Hitachi-LG Data Storage GCE-8486B firmware version 1.00
CD-RW drive produced by Hitachi-LG Data Storage, Korea.


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CD-RW/DVD combo drive
1. Philips CDD5301/xx firmware version P1.1
CD-RW/DVD combo drive produced by Royal Philips Electronics, The Netherlands.
2. Lite-On LTC-48161H firmware version KV5N
CD-RW/DVD combo drive produced by Lite-On IT Corporation, Taiwan.
3. Hitachi-LG Data Storage GCC-4481B firmware version 1.00
CD-RW/DVD combo drive produced by Hitachi-LG Data Storage, Korea.
4. Lite-On LSC-24082K firmware version JK0K
CD-RW/DVD slim type combo drive produced by Lite-On IT Corporation, Taiwan.
5. Lite-On SOSC-2483K firmware version KV0X
CD-RW/DVD slim type combo drive produced by Lite-On IT Corporation, Taiwan.
6. Samsung SN-324F firmware version U203
CD-RW/DVD combo drive produced by Samsung Electronics Co., Ltd. , Korea.
7. QSI SBW242U firmware version UD26
CD-RW/DVD slim type combo drive produced by Quanta Storage Inc., Taiwan.
8. Panasonic UJDA750 firmware version 1.80
CD-RW/DVD slim type combo drive produced by Panasonic Communications Co., Ltd., Japan
9. Samsung SM-352F firmware version T900
CD-RW/DVD combo drive produced by Samsung Electronics Co., Ltd. , Korea.
10. Hitachi-LG Data Storage GCC-4241N firmware version AT03
CD-RW/DVD combo drive produced by Hitachi-LG Data Storage, Japan.
11. Sony CRX830E firmware version KDK4
CD-RW/DVD combo drive produced by Sony Corporation, Japan.
12. PHILIPS CDRW/DVD CDD5263 firmware version UH9A
CD-RW/DVD slim type combo drive produced by Royal Philips Electronics, The Netherlands.
13. NEC CDRW/DVD CB1100A firmware version TB01
CD-RW/DVD combo drive produced by NEC Corporation, Japan.


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DVD+RW/CD-RW drive
1. Philips DVDR1640 firmware version MR11
DVD+RW/CD-RW drive produced by Royal Philips Electronics, The Netherlands.
2. NEC ND-2500A firmware version 1.0M
DVD+RW/CD-RW drive produced by NEC Corporation, Japan.
3. Sony DW-R56A firmware version NDT1
DVD+RW/CD-RW drive produced by Sony Corporation, Japan