1.15 GB on a 700 MB CD-R. How come ??

[raksrules]

Going through my room mate’s Software CD collection, I found a CD labeled ‘Windows 2000’ . It was a Moser Baer 700 Mb CD-R. But on checking the properties of the contents on the CD, I found that the total data was of the size 1.15 GB!!! Can anybody please explain me how can this much amount of data fit on a single CD.? It was not an Original Disc but a CD burned at Home.

 

[executioner]

how did u see the size?by cpying it into harddisk or making an image of it.images r always bigger than original size.

 

[piyush gupta]

tell us is it compressed or image or how u measured size of data on disk

is size shown in disk properties is 1.15GB?

 

[rohus24]

da cd didnt complete burning fully or was stopped in da middle
it once happened 2 me 2

 

[piyush gupta]

da cd didnt complete burning fully or was stopped in da middle
it once happened 2 me 2

then how cd is working

 

[jack// ani]

ya...image files are bigger...but when you burn it on cd it will never exceed 700mb.

 

[subhajitmaji]

I hv also seen a similar kind of CD. The image created from the CD is around 700 MB, but when i just copied the full CD in Explorer, it took around 1.5GB. Can anyone explain?

 

[kalpik]

Because the CD uses something similar to "symbolic links" of linux. It would contain many version of windows right? So all the common files are written just once, but when you copy it, they get copied in all the different folders. Suppose explorer.exe is common to all the windows, the its written just once but has a link in every windows folder.

 

[subhajitmaji]

@Kalpik
Thanks

 

[raksrules]

Hi friends,
I checked out the properties by selecting all the folders and checking their properties collectively from the CD and ti gave me 1.15 GB. Then i copied the contents of the CD on one of my drives and still it showed 1.15 Gb. The CD has approximately 22,000 files and has Windows 200 server edition, service pack 1 and some other things in it. I asked my roomie and he said that this CD was copied from the original windows 2000 CD that he had obtained from his college.