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Re: Buslogic 8GB limit

daemon@ATHENA.MIT.EDU (Drew Eckhardt)
Wed Feb 22 15:38:53 1995

To: Michael Weller <eowmob@exp-math.uni-essen.de>
cc: linux-scsi@vger.rutgers.edu, jered@vorlon.mit.edu
In-reply-to: Your message of "Wed, 22 Feb 1995 16:59:46 +0100."
             <Pine.3.89.9502221645.H19882-0100000@werner.exp-math.uni-essen.de> 
Date: Wed, 22 Feb 1995 11:16:38 MST
From: Drew Eckhardt <drew@boulder.openware.com>

In message <Pine.3.89.9502221645.H19882-0100000@werner.exp-math.uni-essen.de>, 
eowmob@exp-math.uni-essen.de writes:
>Of course this doesn't apply to linux in theory. However you'll even for 
>linux want to partition the disk with a linux-fdisk. I dunno if these
>fdisk's have problems with such big disks due to limits in the DOS partition
>struct on the disk. If linux accepts a disk w/o valid partition info
>you could also make a single filesystem on the whole disk. I vaguely remember
>that the ext2fs tools use special syscalls to access > 4GB or 2GB (32bit 
>offset!) disk partitions. (But check that yourself! I may be wrong.)

1.  Under Linux, there are no problems putting filesystems on the 
	whole-drive devices.

2.  Linux ignores the head/cylinder/sector portions of the partition
	table, and only uses the relative start and length fields
	(which are 32 bit sector counts), so you can have partitions
	on a disk which are out of range with repsect the the HCS
	mapping although you can't boot from them.


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