Mode 1 or Mode 2/XA?

vbimport

#1

I’d like to know, does it really matter what mode is used for burning a CD? Should one of them be always used for a certain type of CD? For example, should Mode 1 be used for Data discs while Mode 2 be used for Audio discs or vice versa?


#2

Mode 1 for data, mp3, etc becuase it incorporates good error correction coding.
Mode 2 only for vcd/svcd movie cd’s.

Audio is always written raw, as AUDIO

Amendment
Mode 2-1 for data
Mode 2-xa for vcd/svcd.


#3

ISO data in XA format

Nero normally writes ISO data in the CD sector format Mode 1 . However Nero also supports the so-called XA-Format for ISO data. The XA format is an extension of ISO structures and can only be burned onto the CD in Mode 2 (another CD sector format). ‘Normal’ ISO Mode 1 tracks behave just like Mode2/XA tracks when read under DOS/Windows and using modern CD-ROM drives.

The latest CD-ROM drives can easily read Mode 1 and Mode2/XA-CDs. However there are still some CD-ROM drives around that cannot read the Mode 1 CDs correctly. Owners of these older drives are advised to write data in the Mode2/XA-format.

MODE-1 standard 2048-byte Yellow Book sectors, with error correction

MODE-2 2336-byte sectors, usually used for CD-ROM/XA
CD-ROM/XA ( eXtended Architecture ) MODE-2 defines two forms:

FORM-1 2048 bytes of data, with error correction, for data
FORM-2 2324 bytes of data, no ecc, for audio/video


#4

Check out this thread at CDRLabs.com for a more detailed answer:
http://www.cdrlabs.com/phpBB/viewtopic.php?t=8075


#5

There is some confusion around about these formats…(the cdrlabs thread looks pretty good, but it can be expressed with less words :stuck_out_tongue: )

Audio: just plain “audio”. There are no Modes…
Data:
Mode 1: “normal”
Mode 2:

  • Form 1: similar to Mode 1, just different arrangement of data
  • Form 2: less error correction; for vcd, svcd or any file if you use Mode2CDMaker,

You can burn any of them in RAW mode…for Mode 1 it just means more work for the burning program (which has to calculate all C3 error correction data)


#6

[QUOTE=BoSkin;363108]
ISO [B]data[/B] in XA format

Nero normally writes ISO data in the CD sector format [B]Mode 1[/B] . However Nero also supports the so-called [B]XA-Format [/B] for ISO data. The XA format is an extension of ISO structures and can only be burned onto the CD in [B]Mode 2[/B] (another CD sector format). ‘Normal’ ISO Mode 1 tracks behave just like Mode2/XA tracks when read under DOS/Windows and using modern CD-ROM drives.

The latest CD-ROM drives can easily read Mode 1 and Mode2/XA-CDs. However there are still some CD-ROM drives around that cannot read the Mode 1 CDs correctly. Owners of these older drives are advised to write data in the Mode2/XA-format.

[B]MODE-1[/B] standard 2048-byte Yellow Book sectors, with error correction

[B]MODE-2 [/B] 2336-byte sectors, usually used for CD-ROM/XA
[B]CD-ROM/XA [/B] ( eXtended Architecture ) MODE-2 defines two forms:

FORM-1 2048 bytes of data, with error correction, for [B]data [/B]
FORM-2 2324 bytes of data, no ecc, for [B]audio/video [/B] [/QUOTE]
I have Nero Burning ROM 7.5.7.0 and am trying to burn a DVD from an ISO in type 2 because only 1 of my three DVD’s will read it in Type 1. However, My “Type 1” box in the DVD section is grayed out. I can only change it for CD’s which I am obviously not trying to record. Am I missing something here?


#7

We have another “Bump of the Century” award …

Almost 5 years to the day … was the last post.

Oh, and DVD’s don’t have mode 1 & mode 2.
Everything is pretty much mode 1 -> Error correction required.


#8

CD-ROM Mode 1: 2048 + 288 + (16) = 2352bytes
CD-ROM Mode 2: 2336 + 0 + (16) = 2352bytes
CD-ROM Mode 2 XA (CD-ROM/XA) Form 1: 2048 + 280 + (24) = 2352bytes
CD-ROM Mode 2 XA (CD-ROM/XA) Form 2: 2324 + 4 + (24) = 2352bytes

Note: The 288 error detecion/correction bytes of “CD-ROM Mode 1” contain 8 zero bytes. “CD-ROM Mode 1” has an effective third-layer error detection/correction of 280 bytes. The 4 error detection bytes of “CD-ROM XA Form 2” are optional. A 2328 user bytes, 0 error detection bytes and 24 other bytes sector is compliant as well.

Don’t be confused by the terms XA, Mode and Form used in wrong combinations and for different meanings all the time on the web. The above is as I know it in my own words and what I think to know existing for CD-ROM. It proved to be correct over a long time. The numbers are user bytes (your data) + error detection/correction bytes for those bytes + different other system bytes = 2352bytes per sector. I hope this helps a little.

:slight_smile: