Why is the CD only 700MB?

What kind of CD is it, if it's the kind of engraved disk, you're in the middle of the carving, and it's forced off.

There is also a possibility that it is not hidden.

The bit rate of the CD is 1440kpbs, and a disk can be used for up to 70 minutes**. Don't compare ***. Generally, the bitrate is 128kbps, which is compressed.

What is the actual size of the disk when burning?

Everything is the same, cd and *** are just burned to the disc in different formats. Just like you have the same bag, the cd means to put things directly into this bag. It means that I compressed something and put it in. The two are different in compression format.

Because the cost of raw materials is not much different. It's just the technology that's bad.

The cost of materials is almost the same, and the difference between CD and *** disc is only the encoding format.

That's because you're using the default settings and writing to a CD all at once. You burn it this way, and no matter how much you burn, as long as you burn it once, the disc is wasted and you can't burn it. Note:

Only burn data discs can be set to multitrack burning. Hope mine can help you.

This may be related to the burning software used, some burning software will seal the disk after burning once (there should be an option), you can do this later: under XP (including Win7), insert a blank disc, select your files to copy to the disc, you click on the disc, there should be an option on the upper left side of the window after you click on the disc, "Write these files to the disc", click and start burning. If the disc is not full, continue adding and burning in the same way.

Disc is written all at once, and once you've written it once, you can't write anything into it.

Your optical drive is VCD burned, and its compression technology is different.

Upstairs is not right, CD-RW discs can be formatted, and it is normal to lose capacity.

Since ordinary discs store data according to tracks, the files stored in the disc can only be written continuously, and the existing files cannot be arbitrarily modified as on the hard disk, which causes some inconvenience. The re-engraved feature of CD-RW makes it possible to modify files in a disc like a hard disk, but to achieve this, it comes at a cost, CD-RW platters must change the storage format by themselves (the format used by ordinary CD-R platters is ISO-9660), and format it into UDF (Universal Disc Format) format through software, so that CD-RW can access data by sector like a hard disk. However, this process is quite long and costs about 100MB of storage space, and DOS does not recognize this file format.

Format? Disc**Need to be formatted? Just burn it directly, RW's disc can erase data, but I haven't heard of formatting a disc, maybe you are mistaken; The actual capacity of a 700MB CD RW disc should be more than 690 megabytes, and a little error is normal.

Uh, go to the encyclopedia to find it, CD, *** common sense, CD is a single piece, a piece is only 700M, the principle is not explained, and the technology and material restrictions of the year are related, just like the development of hard disks, you ask the age of 500MB hard disk and the difference between the current 10TB hard disk, this is the difference between technology and material development, scientists are still studying it, we only know how he works, there is no need to investigate the storage density of this material, how stable the medium is, etc.; The disc has double-sided discs, there are double-sided double-layered discs, each disc can be accommodated easily, and the early just out can also be accommodated, which is like the difference between high-rise buildings in the city and the bungalows in the countryside, on the same land, the population density in high-rise buildings is much higher than that of bungalows.

There are 4 types of CD-R.

There are two types of CD-R with a diameter of 8 cm.

18 mins.

The capacity is calculated as follows in ISO format.

18 (min) *60 (sec) *75 (tiles) *2048 bytes 1024 1024 = MB

The capacity is calculated as follows for audio format.

18 (min) *60 (sec) *75 (tiles) *2352 bytes 1024 1024 = MB

The capacity is calculated as follows in XA format.

18 (min) *60 (sec) *75 (tiles) *2336 bytes 1024 1024 = MB

21 minutes.

The capacity is calculated as follows in ISO format.

21 (min) *60 (sec) *75 (tiles) *2048 bytes 1024 1024 = MB

The capacity is calculated as follows for audio format.

21 (min) *60 (sec) *75 (tiles) *2352 bytes 1024 1024 = MB

The capacity is calculated as follows in XA format.

21 (min) *60 (sec) *75 (tiles) *2336 bytes 1024 1024 = MB

There are two types of CD-R with a diameter of 12 cm.

63 minutes.

The capacity is calculated as follows in ISO format.

63 (min) *60 (sec) *75 (tiles) *2048 bytes 1024 1024 = MB

The capacity is calculated as follows for audio format.

63 (min) *60 (sec) *75 (tiles) *2352 bytes 1024 1024 = MB

The capacity is calculated as follows in XA format.

63 (min) *60 (sec) *75 (tiles) *2336 bytes 1024 1024 = MB

74 minutes.

The capacity is calculated as follows in ISO format.

74 (min) *60 (sec) *75 (tiles) *2048 bytes 1024 1024 = MB

The capacity is calculated as follows for audio format.

74 (min) *60 (sec) *75 (tiles) *2352 bytes 1024 1024 = MB

The capacity is calculated as follows in XA format.

74 (min) *60 (sec) *75 (tiles) *2336 bytes 1024 1024 = MB

It is nothing more than that the pit of the CD record data is large, and the pit of the *** record data is small, so the *** data record is more intensive.

Generally, 650m should not be burned again.

Because you take a disc to the sun to see that it has a burning (glossy) it is a circle of nicks, if you can go to 650m it is already very close, the lines on the edge are easy to be scratched, so for the safety of your data, it is recommended not to engrave the knife to the fullest.

Hehe, I don't know if the answer is satisfactory to you?

Right. A CD is 701MB, and if it is over-engraved, it can only engrave a few more MB of content, and it will not be able to be engraved again.

That's right. The burning is compressed first and then engraved, if the compression is greater than 700, then it can't be installed.

Yes, in general, it is only about 690m.

The quality after more than 700m is not so good.