Using the dd command

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Level 1

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Using the dd command

Hello,

Does anyone familiar with the unix dd command know what the command to convert an .iso file to .img would be?

I am trying to create a bootable dos on my MacBook pro. I have freedos 1.0 as an .iso file, I also have dosbox an dos emulator on my Mac but I can only boot from a virtual floppy with dosbox.

What I was going to do was use dd in terminal to convert my .iso file to a virtual floppy .img file or files.

Any help would be appreciated.
Btw my SuperDrive has to be replaced, so I am trying to do this on my hard drive

Posted on Jan 6, 2011 9:14 AM

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Answer 1

Linc Davis

Level 10

209,547 points

Jan 6, 2011 3:54 PM in response to jamesapp

dd doesn't do anything like that. You may be thinking of hdiutil, which can indeed convert ISO images into other kinds of image. If you have what is supposed to be a bootable FreeDOS image, just burn it and try to boot from it.

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Answer 2

minsf2

Level 1

5 points

Jan 7, 2011 3:33 AM in response to jamesapp

try the bootable fdboot.img available from
http://www.ibiblio.org/pub/micr/pc-stuff/freedos/files/distributions/1.0/

also, try the a.img inside the tar ball available from bochs website
http://bochs.sourceforge.net/diskimages.html

in fact, if you run bochs instead of dosbox, then you should be able to use the images and configuration file that they provide for freedos.

in any case, you'd probably get better answers on freedos/doxbox/bochs websites than here. (they usually use dd to copy an img file to a floppy disk in /dev/fda or something like that)

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