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Article #318

Why does sectors*2K not equal total data on some CD-ROMs???

#318
From: JR
Date: Tue, 13 Jan 1998 00:00
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Hi

On data only CD-ROMs (ie. track 1 only), the sector length is 2048 bytes. 

My Yamaha-400 CD-R via Easy CD Pro v2.11 sees a CD-ROM as having say x 
sectors, and usually 2048x bytes is very close to the total data which a 
file manager will see on the CD-ROM (though there is almost always a 
small discrepancy of 2 extra sectors seen by the Yamaha-400 via Easy CD 
pro but not seen by a file manager). But sometimes the discrepancy is 
huge - out by as much as a factor of 2 ie. the file manager might see for 
example 120 MB of data, when Easy CD pro might indicate sectors 
equivalent to some 250 MB of data are in use.

Can anyone explain this.

Please mail me

John
jrtrdr@aljan.com.au
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From: jrtrdr@aljan.com.au (JR)
Subject: Why does sectors*2K not equal total data on some CD-ROMs???
Date: 1998/01/13
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