Date: Tue, 1 May 2001 00:12:34 +0200 (MET DST) From: j@uriah.heep.sax.de (J Wunsch) To: freebsd-scsi@freebsd.org Cc: "John R. Shannon" <john@johnrshannon.com> Subject: Re: Disk geomerty Message-ID: <200104302212.f3UMCYU67449@uriah.heep.sax.de> References: <01043013530600.00636@pablo.johnrshannon.com>
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"John R. Shannon" <john@johnrshannon.com> wrote: > The diskcontroller offers options for CHS mapping of "Plug and Play > Mapping" or "Alternate CHS Mapping" without explanation. The FAQ > refers to "extended translation support". Does this correspond to > one of these modes? No idea what they really mean. Anyway, based on my own experience the Tekrams are rather forgiving and don't stupidly insist on a particular mapping. The worst that happens (like it could be for `dangerously dedicated' mode) is that they warn you about a supposedly bad fdisk table, and pause for 10 seconds at boot time. While the message then says `Hit any key to continue', they actually even continue automatically after 10 seconds. If you are cautious, just give one of those modes a try with a minimal installation. If it's not what you like, after installation blank out the first sectors of your disk with dd if=/dev/zero of=/dev/da0 count=100 and then immediately reboot and reinstall using the alternative option. The above command will fake a `virgin' disk to the controller BIOS, so they can't try to adapt to a previously installed fdisk table, and have to restart from scratch. -- cheers, J"org .-.-. --... ...-- -.. . DL8DTL http://www.sax.de/~joerg/ NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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