This article is from the the Brief Linux FAQ (BLFAQ) Maintained by Neil Zanella nzanella@ganymede.cs.mun.ca
If your machine is somewhat old and you have an IDE (or EIDE) hard drive then you must install your root partition completely below cylinder 1023 which means below 512 MB of disk space. On SCSI drives this means your root partition must be contained within approximately one GB. If your machine is fairly new and your BIOS supports it you may be able to get around this problem by enabling LBA mode in the BIOS settings.
 
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