Date: Sun, 1 Sep 2002 16:52:39 -0600 (MDT) From: Warren Block <wblock@wonkity.com> To: Matthew Seaman <m.seaman@infracaninophile.co.uk> Cc: FreeBSD LIST <FreeBSD-Questions@FreeBSD.ORG> Subject: Re: dd if=/dev/zero of=/dev/ad1 Message-ID: <Pine.BSF.4.21.0209011648400.13232-100000@wonkity.com> In-Reply-To: <20020901223639.GA12421@happy-idiot-talk.infracaninophi>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sun, 1 Sep 2002, Matthew Seaman wrote: > It's part of the IDE specification: 128k is the maximum IO transfer > size. Oh --- the equivalent figure for SCSI discs is 64kB. I'm reasonably certain that for SCSI it's 64K *blocks* of 512 bytes each, or 32M. Some systems may have driver limitations that break transfers up into 64K chunks, though. -Warren Block * Rapid City, South Dakota USA To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.4.21.0209011648400.13232-100000>