Not all CD burner can overburn. Overburning means that more is burned on the CD than officially fits on the CD. Nero Help). This must not be confused with burning onto oversized CDs, the 80 minute blanks.
Some CD burner will not get the ability to overburn until you carry out a firmware update. e.g. for the Plextor 4x12 as of firmware 1.06, or for the Smart&Friendly 8020 as of firmware 1.20. Not all Nero versions are aware of this. therefore try upgrading to the newest Nero newer version.
There are often rumors circulating that some CD burner can overburn, even though this is not true. e.g. the Philips CDD3610, HP 7100, HP 7200 etc. The rumours surfaced because the burner does not give an erro message when overburning. In actual fact the laser is deactivated after the official end of the CD, i.e. The burned CD can be read until the official end, the data after the official end however is not there.
If you in contrast believe that your CD burner contains the Overburning , then there is the possibility to permit Overburning (as of Nero 4.0.0.6):
Please start the registration editor and change to the following key:
HKEY_CURRENT_USER\Software\ahead\Nero - Burning ROM\General\OverSizeDefaultValue
Set this value to 1. Now Overburning is released for every burner.
Please note: You are working at your own risk. You will probably not be happy with the result. But if the ability to overburn CDs has only been made possible by a firmware update and your Nero version does not know this yet, then this lack of knowledge by Nero can thus be overcome.
A further comment: It is possible to use a trick to overcome the limitation of numerous CD burners which can not overburn. At least this trick works with the Philips CDD3610 / HP 7100 / HP 7200 / HP 8100 / HP 8110 / Sony CRX100 / Sony CRX110 / Memorex CDRW1622 and all compatible devices. We know how the trick works but are not prepared to tell you, (even if you expressly ask us to) because
If you want to know how the trick works, then you can find it on several Internet pages and in Newsgroups. We are not going to give you any more detail than that.
This problem can be solved for some of these burners by updating the firmware:
recommended Firmware | |
Mitsumi 2600TE |
2.30 of higher |
Mitsumi 2801TE |
1.10 or higher |
Mitsumi 4801TE |
2.03 or higher |
Overburning is an ability that not every CD burner can handle. If your CD burner can handle overburning and you want to use the option, then you can set the option using File->Settings->Expert Features .
Presumably because you are using a 650MB CD-R.
On this, see MB = Megabyte.
Nero asks for the available memeory space on the blank. Depending on the vendor, this is usually between 652 and 658MB. This space is fully utilized by Nero .
The free capacity of a blank can be calculated as follows:
On a blank there are a fixed number of free blocks.
74 (min) * 60 (s/min) * 75 (Blocks/s) = 333,000 Blocks
A Block can accept 2048 Bytes of data:
Therefore the capacity is 333.000 * 2048 = 681.984.000 Bytes. As however an MB is 1024 Bytes large (and not 1000 Bytes) this results in a capacity of 650,39 MB (=681.984.000 Bytes)
A CD-R is oversized if the capacity given on the CD is more than 74 minutes. Overburning means that more is burned on the CD tha officially fits on the CD:
This depends on your CD burner .
Then you can also use 74 minute blanks (must however release this Overburning in Settings->Expert Features).
Buy exactly this type of CD-Rs.
Then you have no possibility to copy oversized CDs with your CD burner .
In the Internet there are a few lists with the maximum attainable capacity. Please note that there can be deviations of approx. 30s.