Date: Mon, 02 Dec 2002 15:24:42 -0500 From: Mike Tancsa <mike@sentex.net> To: FreeBSD Stable <freebsd-stable@FreeBSD.ORG> Subject: Re: CF Geometry issues Message-ID: <5.2.0.9.0.20021202151135.05207340@marble.sentex.ca> In-Reply-To: <5.2.0.9.0.20021201124119.04f16660@192.168.0.12>
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Just to follow up on this issue, I was not able to get any of my Verbatim
brand CF cards to work to the point where they would boot (I could newfs
and write to them no problem, but never was I able to boot). However, I
went out and got a Lexar and SanDisk based CF and no problem what so ever.
ad0: 123MB <LEXAR ATA FLASH> [984/8/32] at ata0-master BIOSPIO
and
ad0: 61MB <SanDisk SDCFB-64> [490/8/32] at ata0-master BIOSPIO
I am somewhat surprised as I didnt think there would be any such difference.
---Mike
At 12:47 PM 01/12/2002 -0500, Mike Tancsa wrote:
>I am trying to format a CF disk
>
>port 2 addr 2: power 100 mA, config 1, eUSB CompactFlash Adapter(0x000a),
>SCM Microsystems Inc.(0x04e6), rev 2.18
>da0 at umass-sim0 bus 0 target 0 lun 0
>da0: <eUSB Compact Flash > Removable Direct Access SCSI-2 device
>da0: 650KB/s transfers
>da0: 61MB (125440 512 byte sectors: 64H 32S/T 61C)
>
>I can fdisk and disklabel it no problem, but I can never seem to make it
>bootable.
>
>fdisk da0
>******* Working on device /dev/da0 *******
>parameters extracted from in-core disklabel are:
>cylinders=490 heads=16 sectors/track=16 (256 blks/cyl)
>
>parameters to be used for BIOS calculations are:
>cylinders=490 heads=16 sectors/track=16 (256 blks/cyl)
>
>Media sector size is 512
>Warning: BIOS sector numbering starts with sector 1
>Information from DOS bootblock is:
>The data for partition 1 is:
>sysid 165,(FreeBSD/NetBSD/386BSD)
> start 16, size 2032 (0 Meg), flag 80 (active)
> beg: cyl 0/ head 1/ sector 1;
> end: cyl 7/ head 15/ sector 16
>The data for partition 2 is:
>sysid 165,(FreeBSD/NetBSD/386BSD)
> start 2048, size 123392 (60 Meg), flag 80 (active)
> beg: cyl 8/ head 0/ sector 1;
> end: cyl 489/ head 15/ sector 16
>The data for partition 3 is:
><UNUSED>
>The data for partition 4 is:
><UNUSED>
>
>reading through the archives it seems a lot of people run into this issue,
>but I have not found the solution. People talk of "faking" the geometry,
>but I am not sure other than through trial and error how to find the
>"right" geometry in order to allow me to boot from it. The end goal being
>popping the CF into a Soekris box.
>
>Thanks for any pointers,
>
> ---Mike
>--------------------------------------------------------------------
>Mike Tancsa, tel +1 519 651 3400
>Sentex Communications, mike@sentex.net
>Providing Internet since 1994 www.sentex.net
>Cambridge, Ontario Canada www.sentex.net/mike
>
>
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