[wplug] using dd to get 1474560 bytes

Poyner, Brandon bpoyner at ccac.edu
Sun Jul 11 11:43:02 EDT 2004


Give this a try, I'm not certain it will help but it forces dd to not truncate the output file.  
 
dd if=/dev/fd0 of=floppy.img bs=1024 count=1440 conv=notrunc
 
du -b really prints the apparent size, according to the man page.
 
              print apparent sizes,  rather  than  disk  usage;  although  the
              apparent  size is usually smaller, it may be larger due to holes
              in ('sparse') files, internal  fragmentation,  indirect  blocks,
              and the like

	-----Original Message----- 
	From: Gentgeen [mailto:gentgeen at linuxmail.org] 
	Sent: Sat 7/10/2004 10:38 PM 
	To: wplug 
	Cc: 
	Subject: [wplug] using dd to get 1474560 bytes
	
	

	I have a strange problems, I am trying to make a multi-boot CD, using
	MBCD.  (This is a script/program found at
	http://cowww.epfl.ch/~swalter/mbcd/) It is a really great way for me to
	get a number of my own boot floppies onto one CD, and reduce the clutter
	in my toolbox. 
	
	I made an image of a boot floppy using 'dd if=/dev/fd0 of=floppy.img'
	and did not see any errors.  when I do a 'ls -l' it shows floppy.img to
	be 1474560 bytes.  But when I do a 'du -b' it shows floppy.img to be
	1478656 bytes.  Now the mbcd script uses the 'du -b' method to verify
	the size of the image, and requires it to be  1474560 or 2949120 bytes.
	
	So what am I doing wrong?  I tried adding bs=1474560 and bs=2x80x18b to
	the 'dd' command, but no change.  I have also tried it with 3 different
	boot floppies.
	
	
	
	******************************************************************
	Associate yourself with men of good quality if you esteem your own
	reputation; for 'tis better to be alone then in bad company.
	                    - George Washington, Rules of Civility       
	_______________________________________________
	wplug mailing list
	wplug at wplug.org
	http://www.wplug.org/mailman/listinfo/wplug
	

-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/ms-tnef
Size: 5762 bytes
Desc: not available
Url : http://penguin.wplug.org/pipermail/wplug/attachments/20040711/9bec6a97/attachment-0001.bin


More information about the wplug mailing list