Remove iso-sarge link.
added links to versions in other languages
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|. See also: [[CDDVDTools|CD and DVD applications]] - IsoBuster - [[mkisofs]]||. See also: [[CDDVDTools|CD and DVD applications]] - IsoBuster - [[genisoimage]] (replace mkisofs)|
Disk Image is a computer file containing the complete contents and structure of a data storage device. The term has been generalized to cover any such file, whether taken from an actual physical storage device or not. See more...
A common use of disk images is for remote distribution of software such as Linux distributions: installation floppy disks or CD-ROMs can be recorded as disk image files, transferred over the Internet, and the contents of the original disk(s) duplicated exactly by end users with their own floppy or CD-R drives. So, user can burn the images to convert them in LiveCD s, to try an Operating System, without installing it in the hard disk .
Another common use is to provide virtual disk drive space to be used by SystemVirtualization. This can prevent the CD from getting burned or damaged. It can also reduce bulk when one wishes to carry the contents of the CD along with oneself: one can store disk images to a relatively lightweight and bootable storage device which has a higher storage capacity than that of a CD (i.e. a USB keydrive).
.bin files (or .RAW files) are images extracted in pure RAW format. That is 2352 bytes sectors, the full CD sector content: user data, sector header, error correction codes (ECC) and error detection codes (EDC). Once again, each sector is converted to digital data in the .BIN file, but more stuff is copied and the resulting file will be bigger. The .BIN file should be 251,000 x 2352 = 590,352,000 bytes big. This process will copy ANYTHING on the disc, so it is useful for exotic discs (multiple tracks, mixed track type Audio+Data or Data+Audio) and for non-PC CDs (PSX, VCD, MAC).
An ISO image (.iso) is an informal term for a disk image of an ISO 9660 FileSystem. More loosely, it refers to any optical disk image.
As is typical for disk images, in addition to the data files that are contained in the ISO image, it also contains all the filesystem metadata]] (Boot code, structures, and attributes). All of this information is contained in a single file. These properties make it an attractive alternative to physical data storage device for the distribution of software which requires this additional information as it is simple to retrieve over the Internet.
Some of the common uses include the distribution of Linux and LiveCD s.
How to create it
You can create it with a CD and DVD applications
Command Line Interface:
Ways for copying a CD to a file (this is, create an iso file):
dd if=/dev/cdrom of=image.iso
How to use it
You can open it with a CD and DVD applications
Command Line Interface:
mount -o loop -t iso9660 image.iso /mnt/''somewhere''
A DMG file (disk image) is a popular format on Mac OS X. It is widely used for software distribution means, and is actually the raw image of a HFS filesystem, that's why in Mac OS X it is mounted as a drive.
How to create it
AFAIK the only way to create under Debian it is to use the command line:
dd if="your input file" of=image.dmg
Where "your input file" is a HFS formatted CD or hard drive partition.
But creating a DMG file under Linux makes no sense, since there are many other ways of packing your data, such as file archivers.
How to use it
First you have to install hfsplus (do it as root):
apt-get install hfsplus
Since your DMG is a raw hfs filesystem, you can mount it the same way as an ISO image, just change "iso9660" to "hfs" after the -t (type) switch.
mount -o loop -t hfs image.dmg /mnt/''somewhere''
Of course, you must do this as root, and the target directory has to be created first.
After that the files will be available in the target directory.
Although I haven't tested it, I think that if the DMG file is compressed or protected in any way, you won't be able to mount it.
It worked for me and may or may not work for you.
.img is the filename extension usually use for the disk image of floppy disks, and sometimes, hard disks. First popularized by DOS-based software HD-Copy DiskDupe and now WinRaWrite, is a handy way to archive a floppy disk completely, including bootable ones. In fact there is no "format" in it, just a raw dump of the content of the disk.
Some newer software like Some newer software like WinImage supports zipped version of the format and the extension is .imz.
.nrg is a Nero Image.
You can mount it as follows:
sudo mount -o loop,offset=307200 imagename.nrg /mount-point
iat - Converts many CD-ROM image formats to iso9660 ( BIN, MDF, PDI, CDI, NRG, and B5I)
- Windows users:
SlySoft Virtual CloneDrive (mount and ISO)