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Compressing files

Stephie_Girl
By Stephie_Girl
in Operating Systems
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So I am looking for a way to make restore partitions or system images fit on 1 DVD.  A friend of mine sent me an un-activated windows 7 Ultimate image that was executable that was 3GB big (71GB unpacked).  He says he forgets the program but I burned it to a disk and it worked.  I tried to take a file like wow, and click on compress (convert to a zip) and it's still 24GB big... Any idea???

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Its an ISO file? Or what extension? Zip wont compress you files that much. 7z and rar will do much better. Still need to know what kind of compression did he used. From personal interest is it a installation image or already installed OS made into image.

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So I am looking for a way to make restore partitions or system images fit on 1 DVD.  A friend of mine sent me an un-activated windows 7 Ultimate image that was executable that was 3GB big (71GB unpacked).  He says he forgets the program but I burned it to a disk and it worked.  I tried to take a file like wow, and click on compress (convert to a zip) and it's still 24GB big... Any idea???

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There are variables, depends what kind of files you're compressing, weather it's text or video or applications, they can all be compressed in different ways. 1GB of video can't be compressed as much as 1GB of text can, so it just depends. Also, different methods of compression come out with different results, that's why people use WinRar or 7zip, because they can be more efficient and compress things more.

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It was an ISO file indeed.

My PC: CPU: I7-2600K CPU Cooler: Cooler Master Evo, Mother Board: MSI Z77 Mpower, Ram: 4x4GB DDR3 1600MHz CL9 Corsair Vengeance (Black), Case: HAF 932, PSU: CM GX 650 (Upgrading to RM750 soon), SSD: Samsung 840 Pro 120GB SSD, HD:  750GB Seagate 7200 RPM, Optical: Samsung Blu-ray burner, GPU: MSI GTX 560 TI Twin Frozr (Upgrading to an HD R9-290X on launch)

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It was an ISO file indeed.

7 zip is an amazing compressor, compressed my grandparents 25GB documents folder into <2GB so I could back it up on dropbox and re-install windows with them losing anything.

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It was an ISO file indeed.

IIRC there are different image formats with higher compression ratios than ISO, you'll have to look around for it.

Ofc you will also need conversion software to decompress too.

 

I'm basing this off the fact that I used to use higher compression formats on my PSP and overclock it to compensate and cram more stuff onto an 8gb stick.

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More i think of it that its the image of already installed system which means that winsxs folder shows bigger that its really is. I wont explain how winsxs works because you can google it and i cant explain it in technical terms since im dont use english as 1st language.

 

Got me from 5.2GB to 4.8GB on ISO on best compression. To be honest its hard to believe that he achieved 71GB to a disk size .iso - i would like to see that software/softwares and tricks he used.

 

Edit after some time of looking and beating people for information found program KGB Archiver from this video:

 

Hmm 3 GB to 10 MB...

 

Update: Ok if its really gonna be how it shows then this program is the holy grail of compression using the algorithm used by real KGB :F

But this still doesnt go into how he got that in .iso file...

<p>Eryi's Action Rule#2 - "Dont jump on the green mushroom"

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