How to convert raw images to Imagedisk:
These are just some notes for my own reference and hopefully they might be of use to others:
Many sites such as Winworld distribute disks as raw disk images. This is generally the preferred format for standard MS-DOS disks, and is supported by many disk tools.
However, from my experience some tools have issues with the earlier 160k, 180k, and 320k formats.
Imagedisk can write a variety of DOS and non-DOS formats, and is often preferred for earlier non-DOS media. However, Imagedisk does not know directly how to use raw disk images.
To help facilitate this it includes a utility called "bin2imd". But one must specify the disk geometry manually.
The help states:
Use: BIN2IMD binary-input-file IMD-output-file [option-file] [options]
And typical usage is:
BIN2IMD <image.img> <image.imd> DM=<0-5> N=<40 or 80> SS=<usually 512> SM=<1>-<1-21> /2 (or /1 for single sided) C=<comment | @File>
But they neglect to list the disk modes (parameter DM) in the documentation. They are as follows:
Disk Mode 0=500Khz FM
Disk Mode 1=300Khz FM
Disk Mode 2=250Khz FM
Disk Mode 3=500Khz MFM
Disk Mode 4=300Khz MFM
Disk Mode 5=250Khz MFM
Therefore the following commands will convert the standard disk formats used by the IBM PC and hardware compatibles:
160k raw to imd:
BIN2IMD <image.img> <image.imd> DM=5 N=40 SS=512 SM=1-8 /1
180k raw to imd:
BIN2IMD <image.img> <image.imd> DM=5 N=40 SS=512 SM=1-9 /1
320k raw to imd:
BIN2IMD <image.img> <image.imd> DM=5 N=40 SS=512 SM=1-8 /2
360k raw to imd:
BIN2IMD <image.img> <image.imd> DM=5 N=40 SS=512 SM=1-9 /2
1.2mb raw to imd:
BIN2IMD <image.img> <image.imd> DM=3 N=80 SS=512 SM=1-15 /2
720k (3.5") raw to imd:
BIN2IMD <image.img> <image.imd> DM=5 N=80 SS=512 SM=1-9 /2
1.44mb raw to imd:
BIN2IMD <image.img> <image.imd> DM=3 N=80 SS=512 SM=1-18 /2
It is important to note, however, that some very early non-IBM hardware compatible MS-DOS computers used various other formats not listed above.
Many sites such as Winworld distribute disks as raw disk images. This is generally the preferred format for standard MS-DOS disks, and is supported by many disk tools.
However, from my experience some tools have issues with the earlier 160k, 180k, and 320k formats.
Imagedisk can write a variety of DOS and non-DOS formats, and is often preferred for earlier non-DOS media. However, Imagedisk does not know directly how to use raw disk images.
To help facilitate this it includes a utility called "bin2imd". But one must specify the disk geometry manually.
The help states:
Use: BIN2IMD binary-input-file IMD-output-file [option-file] [options]
opts: /1 - 1-sided output
/2 - 2-sided output
/C - write Compressed sectors
/U - write Uncompressed sectors
/V[0|1] - Verbose output
C=text | @file - image Comment
N=#cylinders - set Number of output cylinders
DM[s]=0-5 - track Data Mode
SS[s]=128-8192 - track Sector Size
SM[s]=n[,n-n][n.#] - track Sector numbering Map
CM[s]=n[,n-n][n.#] - track/sector Cylinder Map
HM[s]=n[,n-n][n.#] - track/sector Head Map
And typical usage is:
BIN2IMD <image.img> <image.imd> DM=<0-5> N=<40 or 80> SS=<usually 512> SM=<1>-<1-21> /2 (or /1 for single sided) C=<comment | @File>
But they neglect to list the disk modes (parameter DM) in the documentation. They are as follows:
Disk Mode 0=500Khz FM
Disk Mode 1=300Khz FM
Disk Mode 2=250Khz FM
Disk Mode 3=500Khz MFM
Disk Mode 4=300Khz MFM
Disk Mode 5=250Khz MFM
Therefore the following commands will convert the standard disk formats used by the IBM PC and hardware compatibles:
160k raw to imd:
BIN2IMD <image.img> <image.imd> DM=5 N=40 SS=512 SM=1-8 /1
180k raw to imd:
BIN2IMD <image.img> <image.imd> DM=5 N=40 SS=512 SM=1-9 /1
320k raw to imd:
BIN2IMD <image.img> <image.imd> DM=5 N=40 SS=512 SM=1-8 /2
360k raw to imd:
BIN2IMD <image.img> <image.imd> DM=5 N=40 SS=512 SM=1-9 /2
1.2mb raw to imd:
BIN2IMD <image.img> <image.imd> DM=3 N=80 SS=512 SM=1-15 /2
720k (3.5") raw to imd:
BIN2IMD <image.img> <image.imd> DM=5 N=80 SS=512 SM=1-9 /2
1.44mb raw to imd:
BIN2IMD <image.img> <image.imd> DM=3 N=80 SS=512 SM=1-18 /2
It is important to note, however, that some very early non-IBM hardware compatible MS-DOS computers used various other formats not listed above.
Comments
For example : .IMA (.IMG / Standard Disk Image) --> .TD0 (Teledisk) .IMD (ImageDisk)
psi filename.ima filename.td0
Also you can convert normal image or other format to .psi (PCE sector Image).
.PSI format includes a lot of disk/sector information.
Of course .TC (TransCopy Image renamed from .IMG), or Kyroflux image must be more extensive than .psi .td0 .imd.