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optical_drive_speeds [2018/03/28 16:10]
beandog
optical_drive_speeds [2018/12/17 15:54]
beandog
Line 4: Line 4:
  
 You can do the conversion on your own to another format, because I can't be certain of my own work, and also because numerous resources use the wrong naming syntax (kB vs Kb vs kb vs KB, and so on, going up or down from there). You can do the conversion on your own to another format, because I can't be certain of my own work, and also because numerous resources use the wrong naming syntax (kB vs Kb vs kb vs KB, and so on, going up or down from there).
 +
 +You can use [[cdrecord]] to get your drive'​s speed. Insert a DVD into the into the drive to get speed for that one, a CD otherwise, etc.
 +
 +<​code>​
 +cdrecord -prcap
 +</​code>​
 +
 +<​code>​
 +  Maximum read  speed: 11080 kB/s (CD  62x, DVD  8x, BD  2x)
 +  Current read  speed: ​ 5540 kB/s (CD  31x, DVD  4x, BD  1x)
 +  Maximum write speed: ​    0 kB/s (CD   0x, DVD  0x, BD  0x)
 +  Current write speed: ​    0 kB/s (CD   0x, DVD  0x, BD  0x)
 +  Rotational control selected: CLV/PCAV
 +  Buffer size in KB: 512
 +  Copy management revision supported: 1
 +  Number of supported write speeds: 1
 +  Write speed # 0: 11080 kB/s CLV/PCAV (CD  62x, DVD  8x, BD  2x)
 +</​code>​
 +
 +If you have multiple drives, you will have to select it directly.
 +
 +Use cdercord to get all of them:
 +
 +<​code>​
 +cdrecord -scanbus
 +</​code>​
 +
 +<​code>​
 +scsibus0:
 + 0,​0,​0  ​ 0) '​ATA ​    '​ 'WDC WD5000AAKS-0'​ '​1D05'​ Disk
 + 0,​1,​0  ​ 1) *
 + 0,​2,​0  ​ 2) *
 + 0,​3,​0  ​ 3) *
 + 0,​4,​0  ​ 4) *
 + 0,​5,​0  ​ 5) *
 + 0,​6,​0  ​ 6) *
 + 0,​7,​0  ​ 7) *
 +scsibus1:
 + 1,0,0 100) '​TSSTcorp'​ '​CDRWDVD TS-H493B'​ '​D200'​ Removable CD-ROM
 + 1,1,0 101) *
 + 1,2,0 102) *
 + 1,3,0 103) *
 + 1,4,0 104) *
 + 1,5,0 105) *
 + 1,6,0 106) *
 + 1,7,0 107) *
 +scsibus2:
 + 2,0,0 200) '​TSSTcorp'​ '​DVD+-RW TS-H653B'​ '​D300'​ Removable CD-ROM
 + 2,1,0 201) *
 + 2,2,0 202) *
 + 2,3,0 203) *
 + 2,4,0 204) *
 + 2,5,0 205) *
 + 2,6,0 206) *
 + 2,7,0 207) *
 +scsibus3:
 + 3,0,0 300) '​ATAPI ​  '​ 'DVD A  DH24ACSH ' '​LAA3'​ Removable CD-ROM
 + 3,1,0 301) *
 + 3,2,0 302) *
 + 3,3,0 303) *
 + 3,4,0 304) *
 + 3,5,0 305) *
 + 3,6,0 306) *
 + 3,7,0 307) *
 +</​code>​
 +
 +Next select the device using the indexing. Here, I've scanning the second drive:
 +
 +<​code>​
 +cdrecord -prcap dev=1,0,0
 +</​code>​
  
 ==== DVDS ==== ==== DVDS ====
  
 ^ Drive Speed ^ Bytes (B) ^ Source ^ ^ Drive Speed ^ Bytes (B) ^ Source ^
-| **1x** | 1,385,000 | [[http://​www.osta.org/​technology/​dvdqa/​dvdqa4.htm|OSTA]] |+| **1x** | ''​1,385,000'' ​| [[http://​www.osta.org/​technology/​dvdqa/​dvdqa4.htm|OSTA]] |
  
 ==== Blu-rays ==== ==== Blu-rays ====
  
 ^ Drive Speed ^ Bytes (B) ^ Source ^ ^ Drive Speed ^ Bytes (B) ^ Source ^
-| **1x** | 4,718,592 | Blu-ray Specifications |+| **1x** | ''​4,718,592'' ​| Blu-ray Specifications |
  
 While writing this, I can't find the exact source, but I do know it was a PDF of the official Blu-ray spec. You can see the public specs here - http://​www.blu-raydisc.com/​en/​Industry/​Specifications/​PublicSpecs.aspx While writing this, I can't find the exact source, but I do know it was a PDF of the official Blu-ray spec. You can see the public specs here - http://​www.blu-raydisc.com/​en/​Industry/​Specifications/​PublicSpecs.aspx
  
 +==== Market Availability ====
 +
 +My Blu-ray / DVD drive is old (from 2009), and it's an 4x BD-ROM, and 8x DVD-ROM.
 +
 +The majority of optical drives on the market now (March 2018) are 12x BD-ROM, and 18x DVD-ROM.
 +
 +To be safe, in my code, I set the default max speed at my drives, and allow users to override the drive speed manually to maximize the read speed **per second**.

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