Registered: Sep 2002
Location: Planet Terra
Posts: 62

Hmm...well, then, try this program out.

http://www.daemon-tools.com/

In this site, you should download 2 programs - Disc Dump and Daemon Tools. Go to the Download Section. Download DDump and run it. What it will do is it will dump the image of the CD into your Hard Disk. Then Download Daemon-Tools as well. Install it, and once it's installed, an icon of it should show next to the clock. Right click on it, select Virtual CD/DVD-ROM, then choose Device 0, then choose Mount. Now look for the CD Image that you made with Disc Dump and select it.

What Daemon Tools does is make a sort of "Virtual CDROM", with the image of the CD that you made with Disc Dump. Actually, I'm also doing this with my copy of FreeSpace right now, because my CDs get very noisy inside the CD-ROM drive. It should work better now, because all the data is in your HD.

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Registered: Jun 2002
Location:
Posts: 76

About the 'cyclical redundancy' stuff:

Each file is store in chunks called sectors on the hard disk/floppy/CD-ROM drive (you probably knew that anyway). HDD and floppy sectors are 512 bytes in size, while CD-ROM sectors are something strange like 2048 bytes.

Each sector has what is called a 'cyclical redundancy checksum' stuck on the end of it. This is derived from an algorithm that adds up all the bytes of data and computes a value that is unique to the sector.

When the data in a sector is accessed, the drive reads the data and generates a checksum for it. This is compared to the checksum on the disc and if it matches (which is the most likely possibility), then the data is probably (99.99% likely) correct.

If the checksums don't match, then one, or both of these two possibilites has occured:
1 - The data on the disc is corrupted and so the 'on the fly' checksum is incompatible with the stored one.
2 - The CRC section on the disc is damaged (this is less likely, as is is comparatively small), so it won't match with the computed value.

When there is a mismatch in the CRCs, then the disk drive refuses to hand on the data (which very likely is corrupt) and signals a read error to the operating system. The OS will then tell you that there was a CRC error and will not give you (or Freespace) the data.

Hope that answers your question, Mewgen1.

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"Once I destroyed the world with nuclear fire to clear the way for my cybernetic future. I now intend to further shape the world into my own image by surgically removing unwanted growths like yourself!" - NEXUS, Warzone 2100

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Registered: Jun 2002
Location: West Sussex, England
Posts: 85

About the 'cyclical redundancy' stuff:

Each file is store in chunks called sectors on the hard disk/floppy/CD-ROM drive (you probably knew that anyway). HDD and floppy sectors are 512 bytes in size, while CD-ROM sectors are something strange like 2048 bytes.

Each sector has what is called a 'cyclical redundancy checksum' stuck on the end of it. This is derived from an algorithm that adds up all the bytes of data and computes a value that is unique to the sector.

When the data in a sector is accessed, the drive reads the data and generates a checksum for it. This is compared to the checksum on the disc and if it matches (which is the most likely possibility), then the data is probably (99.99% likely) correct.

If the checksums don't match, then one, or both of these two possibilites has occured:
1 - The data on the disc is corrupted and so the 'on the fly' checksum is incompatible with the stored one.
2 - The CRC section on the disc is damaged (this is less likely, as is is comparatively small), so it won't match with the computed value.

When there is a mismatch in the CRCs, then the disk drive refuses to hand on the data (which very likely is corrupt) and signals a read error to the operating system. The OS will then tell you that there was a CRC error and will not give you (or Freespace) the data.

Hope that answers your question, Mewgen1.

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Registered: Oct 2001
Location:
Posts: 66

Thanks Bannana, it does answer my question. Although its kind of a mute point now since I just got a new copy of the game.

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Where ever you go there you are.

There will be an answer. Let it be.- John Lenon

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Registered: Oct 2001
Location: Stevensville, MT
Posts: 142

Thanks Bannana, it does answer my question. Although its kind of a mute point now since I just got a new copy of the game.

__________________
Understanding is a three edged sword: your side, there side, and the truth.
-Cap. John Sheridan

Where ever you go there you are.

There will be an answer. Let it be.- John Lenon

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Registered: Aug 2002
Location: The USA
Posts: 249

How much did you pay for it?

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Leader of the Terran - Vasudan War project.

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