Linux Disk Commands - Revision history

>Thothy: Fixed link to Linux msa tool

2014-08-08T10:19:00Z

Fixed link to Linux msa tool

← Older revision		Revision as of 06:19, 8 August 2014
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	There are some other disk image formats, such as MSA and DIM.		There are some other disk image formats, such as MSA and DIM.

	MSA is the format created by the Magic Shadow Archiver, it's very popular for use with emulators. ~~Thomas Huth has created a~~ [http://hatari.~~sourceforge~~.~~net~~/~~files/msa-0.1.0.tar.gz Linux~~ program] to convert between the '.ST' format and the '.MSA' format.		MSA is the format created by the Magic Shadow Archiver, it's very popular for use with emulators.
			The emulator [http://hatari.tuxfamily.org/ Hatari] ships with a program called hmsa that can be used to convert between the '.ST' format and the '.MSA' format.

	The DIM format is created using FastCopy. It is the same as the '.ST' format, but with some additional information in a 32-byte header. You can convert this with the following command, which simply strips off the first 32 bytes:		The DIM format is created using FastCopy. It is the same as the '.ST' format, but with some additional information in a 32-byte header. You can convert this with the following command, which simply strips off the first 32 bytes:

>Wongck at 15:52, 11 October 2011

2011-10-11T15:52:28Z

← Older revision		Revision as of 11:52, 11 October 2011
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	dd if=image.dim of=image.st bs=32 skip=1		dd if=image.dim of=image.st bs=32 skip=1
	</pre>		</pre>

			[[Category: Disk Imaging]]

>Lucky.day: /* Reading the Image */

2008-06-06T18:24:30Z

Reading the Image

← Older revision		Revision as of 14:24, 6 June 2008
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	<pre>		<pre>
	cp /dev/fd0 image.st		cp /dev/fd0 image.st
			</pre>

			A better way would be using the disk dump utility 'dd', which works regardless of the filesystem:

			<pre>
			dd if=/dev/fd0 of=image.st
	</pre>		</pre>

>Daeghnao: /* Fast Format */

2006-09-25T15:16:26Z

Fast Format

← Older revision		Revision as of 11:16, 25 September 2006
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	Some disks formatted with Fastcopy III or Fastcopy Pro on the Atari ST are known to be unreadable on		Some disks formatted with Fastcopy III or Fastcopy Pro on the Atari ST are known to be unreadable on
	some PCs, even when accessing the disk controller directly. The ~~skewing of~~ the disk ~~is beyond the~~		some PCs, even when accessing the disk controller directly. The problem lies with too short a track
	~~capabilities of the hardware~~. If you encounter this problem, you will have to copy the disk contents		lead-in when using the "fast format" option, interfering with the usual process by which the disk
			controller locates sectors. For now, if you encounter this problem, you will have to copy the disk contents
	using an Atari ST or other hardware that does not suffer the same problem.		using an Atari ST or other hardware that does not suffer the same problem.

>Daeghnao: /* Using a Disk Image */

2006-09-25T15:12:26Z

Using a Disk Image

← Older revision		Revision as of 11:12, 25 September 2006
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	There are some other disk image formats, such as MSA and DIM.		There are some other disk image formats, such as MSA and DIM.

	MSA is the format created by the Magic Shadow Archiver, it's very popular for use with emulators. [http://~~thothy~~.~~atari~~.~~org~~/ ~~Thothy] has created a~~ Linux program to convert between the '.ST' format and the '.MSA' format.		MSA is the format created by the Magic Shadow Archiver, it's very popular for use with emulators. Thomas Huth has created a [http://hatari.sourceforge.net/files/msa-0.1.0.tar.gz Linux program] to convert between the '.ST' format and the '.MSA' format.

	The DIM format is created using FastCopy. It is the same as the '.ST' format, but with some additional information in a 32-byte header. You can convert this with the following command, which simply strips off the first 32 bytes:		The DIM format is created using FastCopy. It is the same as the '.ST' format, but with some additional information in a 32-byte header. You can convert this with the following command, which simply strips off the first 32 bytes:

>Daeghnao: /* Writing the Image */

2006-03-26T22:32:19Z

Writing the Image

@@ Line 36: / Line 36: @@
 od -v -Ad -t u1 -w1 $1 | awk 'NR==20 {sl=$2} NR==21 {sh=$2} NR==25 {spt=$2}
 NR==27 {s=$2; print "Sides: " s " Sectors: " spt " Tracks: " (sh * 256 + sl) / spt / s; exit}'
 </pre>

>Daeghnao: /* Writing the Image */

2006-03-26T22:29:42Z

Writing the Image

← Older revision		Revision as of 18:29, 26 March 2006
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	<pre>		<pre>
	#!/bin/sh		#!/bin/sh
	od -v -Ad -t u1 -w1 $1 \| awk 'NR==20 {sl=$2} NR==21 {sh=$2} NR==25 {spt=$2} NR==27 {s=$2; print "Sides: " s " Sectors: " spt " Tracks: " (sh * 256 + sl) / spt / s; exit}'		od -v -Ad -t u1 -w1 $1 \| awk 'NR==20 {sl=$2} NR==21 {sh=$2} NR==25 {spt=$2}
			NR==27 {s=$2; print "Sides: " s " Sectors: " spt " Tracks: " (sh * 256 + sl) / spt / s; exit}'
	</pre>		</pre>

>Daeghnao: /* Writing the Image */

2006-03-26T22:29:11Z

Writing the Image

← Older revision		Revision as of 18:29, 26 March 2006
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	== Writing the Image ==		== Writing the Image ==

	To write the image to a disk, first ~~format~~ the disk, then copy the image back to the appropriate floppy device.		To write the image to a disk, first make sure that the disk has the right format, then copy the image back to the appropriate floppy device.

			You can find out some information about the image with the following handy script. It reads details from the bootsector to identify the sides, sectors and tracks on the disk:

			<pre>
			#!/bin/sh
			od -v -Ad -t u1 -w1 $1 \| awk 'NR==20 {sl=$2} NR==21 {sh=$2} NR==25 {spt=$2} NR==27 {s=$2; print "Sides: " s " Sectors: " spt " Tracks: " (sh * 256 + sl) / spt / s; exit}'
			</pre>

	The disk can be formatted with superformat. You specify the disk and the size in the same way as for setfdprm:		The disk can be formatted with superformat. You specify the disk and the size in the same way as for setfdprm:
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	superformat /dev/fd0 dd ds sect=10 cyl=80		superformat /dev/fd0 dd ds sect=10 cyl=80
	</pre>		</pre>

			Linux will generally trust whatever the disk boot sector says the size of the disk is, rather than looking around the disk. You can probe the disk for its size with various low-level floppy disk controller commands if need be - there's a [http://fdutils.linux.lu/disk-id.html tutorial] in the fdutils documentation. If you know how many sectors and tracks the disk has had formatted on it, regardless of what disk image was written to it, you can set the parameters directly (they should last until you take the disk out):

			<pre>
			setfdprm /dev/fd0 dd ds sect=10 cyl=82
			</pre>

			Generally, you should only do this when you're sure that the number of sectors is the same and the number of tracks is sufficient. If in doubt, reformat the disk to the right size before writing the image.

	To write the image:		To write the image:

>Daeghnao: /* Using a Disk Image */

2006-03-22T13:05:30Z

Using a Disk Image

← Older revision		Revision as of 09:05, 22 March 2006
Line 74:		Line 74:
	There are some other disk image formats, such as MSA and DIM.		There are some other disk image formats, such as MSA and DIM.

	MSA is the format created by the Magic Shadow Archiver, it's very popular for use with emulators. [http://thothy.atari.st Thothy] has created a Linux program to convert between the '.ST' format and the '.MSA' format.		MSA is the format created by the Magic Shadow Archiver, it's very popular for use with emulators. [http://thothy.atari.org/ Thothy] has created a Linux program to convert between the '.ST' format and the '.MSA' format.

	The DIM format is created using FastCopy. It is the same as the '.ST' format, but with some additional information in a 32-byte header. You can convert this with the following command, which simply strips off the first 32 bytes:		The DIM format is created using FastCopy. It is the same as the '.ST' format, but with some additional information in a 32-byte header. You can convert this with the following command, which simply strips off the first 32 bytes:

>Daeghnao: /* Using a Disk Image */

2006-03-22T13:01:50Z

Using a Disk Image

@@ Line 70: / Line 70: @@
 mkdir files
 mcopy -i image.st -s ::/ files
 </pre>