Physical Image

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A physical image is a single file containing the entire contents of a disc project, or of more or more tracks, including the file system. The most common physical image format is an ISO image, which is a disc image of a CD-ROM that uses the ISO 9660 file system only. This is a de-facto standard, not a true standard described by specifications. GEAR will read the entire contents of your project, sector by sector, including the file system or systems, or any empty sectors or partially empty sectors within the project. If you wish, you can later change the file name extension to .iso or another extension which indicates the format of the disc image.


Create Physical Image of a GEAR Project

  1. Select File → Open GEAR Project...
  2. Browse to your GEAR Working Directory – usually ...\My Documents\My GEAR Projects
  3. Select the project and click [Open]
  4. Select Project → Convert Volume to Physical... or Convert Current Track to Physical

The progress of the conversion process is displayed in the GEAR information window
The physical images will be saved in the GEAR Working Directory

  • Convert Volume to Physical – If there is more than one track in the volume, for example in a VCD, GEAR will create separate physical images for each track in the project
  • Convert Current Track to Physical – GEAR will create a physical image file only for the track selected

    ISO-9660 is limited to file sizes of 4 GB (because the number of bytes then exceeds the 32 bits allocated to describe the file size in ISO-9660).
    On DVD images that use file sizes larger than 4 GB, you can not use ISO or ISO/UDF. In this case, you must use a pure UDF file system.

Create Physical Image of a CD/DVD Disc

  1. Start GEAR with a CD in the drive.
  2. Right-click the drive in the devices window and select 'Disc Information'
    or select the drive, and click the 'Disc Information Icon' in the tool-bar.
  3. Select the 'Session' from the left-side pane. Right-click the 'Track' you wish to 'rip' and select 'Copy Track'.
  4. Select where you wish to save the .iso file...
  5. Type the name you wish to use for the .iso file...
  6. Click 'Create'...
  7. You're done!

Browse to that folder and you should see your ‹file_name›‹track#›.iso

Mount / unmount an ISO image as a local file system on various UNIX / Linux platforms

Often times GEAR PRO UNIX and GEAR PRO Linux users will need to 'check' the content of a physical image file either created by GEAR or acquired elsewhere. This can be done to ensure the content of the image is correct, and can also be used to add content from a physical image into a GEAR project

On Solaris

To mount:

  1. # lofiadm -a /<file.iso> (this will create device file /dev/lofi/1)
  2. # mount -F hsfs -o ro /dev/lofi/1 /<mountpoint>

To unmount:

  1. # umount /<mountpoint>
  2. # lofiadm -d /dev/lofi/1


To mount:

  1. # nohup pfs_mountd &
  2. # nohup pfsd &
  3. # pfs_mount -o xlat=UNIX <file.iso> /<mountpoint>

To unmount:

  1. # pfs_umount /<mountpoint>

Subsequently, kill the following processes:

  1. pfs_mountd
  2. pfsd
  3. pfs_mountd.rpc
  4. pfsd.rpc


To mount:

  1. Build a logical volume (the size of an ISO image, better if a little bigger)
  2. Create an entry in /etc/filesystem using that logical volume (LV), but setting its Virtual File System (V'S) to be cdrfs
  3. Create the mount point for this LV/ISO
  4. Copy the ISO image to the LV using dd
  5. Mount and work on it like a mounted CD-ROM

The entry in /etc/filesystem should look like:


dev = /dev/lv09 vfs = cdrfs mount = false options = ro account = false

To unmount:

  1. Unmount the file system
  2. Destroy the logical volume

On Red Hat Linux (and other Linux Distros)

To mount:

    # mount -t iso9660 /<file.iso> /<mountpoint> -o loop

To unmount:

    # umount /<mountpoint>
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