Backup of DVD

[hangfire]

Hi

 

I am newbie here and am trying to take backup of a Bootable OS DVD.

 

When I create an ISO from the DVD, it creates a ISO file of about 5GB which is double layer, and DVD is of 4,7 GB.

 

Kinda lost here, am I doing anything wrong?

 

TIA.

[eSkRo]

whats the OS?

[mmalves]

With ImgBurn in Read mode and that disc in the drive, copy and paste here all the media information text shown in ImgBurn's main window.

[hangfire]

With ImgBurn in Read mode and that disc in the drive, copy and paste here all the media information text shown in ImgBurn's main window.

 

Here it is -

======

PIONEER DVD-RW DVR-K17A 3.52 (ATA)

Current Profile: DVD-ROM

 

Disc Information:

Status: Complete

Erasable: No

Sessions: 1

Sectors: 2,508,581

Size: 5,137,573,888 bytes

Time: 557:29:56 (MM:SS:FF)

 

TOC Information:

Session 1... (LBA: 0)

-> Track 01 (Mode 1, LBA: 0 - 2508580)

-> LeadOut (LBA: 2508581)

 

Track Information:

Session 1...

-> Track 01 (LTSA: 0, TS: 2508581, LRA: 2508580)

 

Physical Format Information (Last Recorded - L0):

Book Type: DVD-ROM

Part Version: 1

Disc Size: 120mm

Maximum Read Rate: 10.08Mbps

Number of Layers: 2

Track Path: Opposite Track Path (OTP)

Linear Density: 0.293 um/bit

Track Density: 0.74 um/track

First Physical Sector of Data Area: 196,608

Last Physical Sector of Data Area: 14,919,268

Last Physical Sector in Layer 0: 2,281,567

 

Physical Format Information (Last Recorded - L1):

Book Type: DVD-ROM

Part Version: 1

Disc Size: 120mm

Maximum Read Rate: 10.08Mbps

Number of Layers: 2

Track Path: Opposite Track Path (OTP)

Linear Density: 0.293 um/bit

Track Density: 0.74 um/track

First Physical Sector of Data Area: 196,608

Last Physical Sector of Data Area: 14,919,268

Last Physical Sector in Layer 0: 2,281,567

 

Layer Information:

Layer 0 Sectors: 2,084,960 (83.11%)

Layer 1 Sectors: 423,621 (16.89%)

=======

 

OS is Win_7

 

TIA

[mmalves]

That's a dual layer disc, and it was made it that way probably to discourage people from copying it.