Cannot limit/set auto-verify read speed

[ALEK]

Hello everyone,

 

even though I set read speed in drive options (for example 4x), after the BD burn (I have the verify option checked, not using the verify mode) the disc is verified in the max speed of the drive, thus making a lot of noise. How on earth to set the read speed?

[dbminter]

The bottom line is the drive itself controls what it does based on its firmware and the strategies set on the disc in the drive.  The best you can do is set the speed and hope you get it.

[ALEK]

Isn't supposed that imgburn (or any similar program doing the same thing) controls the speed since it's THE program that does the verify? How can imgburn have read speed options in the verify mode (haven't tried it yet because I don't know if it's the same as the auto-verify) and not in the auto-verify? PS, it's a H-L BH16NS55 drive and supposedly has "silent play" option, but I guess its for media playback.
 

[dbminter]

Drives behave based on their firmware for a particular medium and the read/write strategies set on the disc.  So, even though a disc may say it supports a slower speed, it actually only supports the lowest possible speed defined in the firmware for that medium and the read/write strategies on the disc.

 

[ALEK]

Ok. Do you know how to override/limit this (any method/utility)? Oh by the way, you said about strategies on the disc; when I first burned a BD (verbatim 25gb, 6x, write speed in imgburn was default max I think), imgburn went from 2x up to ~10-12x.. any thoughts?

Edited September 17, 2020 by ALEK

[dbminter]

Like I said, a disc may be rated for X, but the write strategy in the firmware may allow for slower or faster speeds.  A lot of 6x rated BD-R will burn at 12x in most drives.  My LG will do that.  It depends on the firmware write strategies.

 

You said this drive had some kind of quiet setting?  You could try disabling it.  I always disabled the Quiet mode on my Pioneer drives to get faster read speeds.  I don't care if my drive makes noise.  I want the fastest speed I can get out of it.

 

ImgBurn has some advanced settings for certain manufacturers like Pioneer where you can disable the quiet setting.  Otherwise, the manufacturer of your drive may have a utility of its own to do that.  Pioneer also makes its own utility for changing drive settings, but ImgBurn can do them, too, with its Advanced functions.

 

[LIGHTNING UK!]

I’m pretty sure it uses the speed you set in verify mode.

[ALEK]

Yes, it uses the speed set in verify mode; I just checked that and it worked. However, the verifying speed started from 1x upto 4x. I had set for 4x, and I was expecting that the verify speed would be constant. But that was not the case. Log said effective read speed 1x-4x. Is this drive/firmware issue/strategy?

About the quiet setting, I don't know how to enable or disable. It's probably automatic and possibly has to do when you playback B-R video discs.

As for the speed limitation, I use BDs for cold storage backup. I want to make quality backups, that's why I choose verbatim hard-coat HTL M-A-B-L disks (that are rated at 6x) and burn them at x4 (somewhere I read that even burning too low can be bad for disks). Also, when verifying at max speed the drive is about to melt from the heat, and also makes a lot of noise (not alone in the house, burning disks late at night).

 

[dbminter]

Oh, I think I misunderstood what you were asking.  Any operation, read or write, will effectively start at 0x and gradually increase to, say, the 4x you set.  The speed of any operation will also fluctuate, depending on a variety of factors.

 

[ALEK]

Just to clarify, at first I set read speed through tools->drive->set read speed. That is not working. Then in verify mode seting 4x works (but gradually starting from1x). I just set read at 6x and verify started from 2x. I think I 'll have to leave it as it is. It's noteworthy to say that I also use dvdisaster to write ecc files; this program has no speed options, so it reads at max speed, unless just after the dvdisaster's verify starts if I launch imgburn and just go to verify mode, the drive limits its speed and dvdisaster continues at the speed that imgburn set.

[dbminter]

Just a guess; LUK will have to verify or deny it, but that Tools read speed option may only affect Read mode operations.  Meaning when you're creating an image from a disc.  I don't know, but it may not affect Verify rates.  However, a Verify is, in essence, a Read operation.

 

[LIGHTNING UK!]

The option in the tools does it there and then... possibly only for dvd, I can’t remember.

The program sets the speed again when starting any sort of read/write operation (based on the value in the drop down box from that mode), so the speeds chosen from tools->drive will no longer apply.