At 3:30 PM -0500 02/26/04, PowerBooks wrote:
Message-Id: <[EMAIL PROTECTED]>
From: Bruce Johnson <[EMAIL PROTECTED]>
Subject: Re: That SCSI disk limit corruption issue
Date: Wed, 25 Feb 2004 13:01:42 -0700
 >  but even though my PB
 190 has a 30gig Travelstar aboard, I partitioned it into eight
 partitions
 of 3.4 gigs each, and my 6320's 10gig Western Digital HD is partitioned
 into 3.2 gig partitions, so that should well get me under this 4gig
 > SCSI limit, right?
Wrong! The 4GB limit is due to an integer 'rollover' in physical
addressing in the rom. All partitioning does is map partitions to
physical addresses 'partition 1 is sector 1-32000 of device A,
partition 2 is sector 32001-64000', etc, it does not re-set the count.
The moment you write past 4GB you start over writing at 0 again, which
pretty well hoses the drive.
If you're *very* careful not to write beyond 4GB, it will work. I was
able to copy everything to a new 6gb drive in my 5300 via SCSI disk
mode,  but that was on a freshly formatted drive in one single write
operation of about 1 GB of data...

Okay, please help me here. Are you saying that if you just work with files over 4gigs you're in trouble or what? My largest files are vieod clips of 250megs. Doesn't the ROM see a partition is a separate drive or the whole basket? My HD is already formatted into 3.2 gig chunks, so it it doesn't really matter, right?


JimWG

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