Date: Tue, 25 Dec 2001 16:11:39 +0000 From: Tiarnan O Corrain <ocorrain@esatclear.ie> To: freebsd-questions@freebsd.org Subject: Linux -> BSD drive addresses Message-ID: <20011225161139.A562@wintermute>
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Hi all--
I recently switched from Linux to FreeBSD, and am
puzzled by FreeBSD's drive addressing scheme. Basically I have a Linux
partition on my second drive that contains all of my mp3s. It is the
second partition on the disk. Here's what fdisk reports:
wintermute# fdisk /dev/ad0
******* Working on device /dev/ad0 *******
parameters extracted from in-core disklabel are:
cylinders=2658 heads=240 sectors/track=63 (15120 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=2658 heads=240 sectors/track=63 (15120 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 12,(DOS or Windows 95 with 32 bit FAT, LBA)
start 257040, size 20487600 (10003 Meg), flag 0
beg: cyl 17/ head 0/ sector 1;
end: cyl 1023/ head 239/ sector 63
The data for partition 2 is:
sysid 131,(Linux filesystem)
start 20744640, size 19444320 (9494 Meg), flag 0
beg: cyl 1023/ head 255/ sector 63;
end: cyl 1023/ head 239/ sector 63
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>
I can't seem to convert this information into a usable device name for
FreeBSD. For example:
wintermute# mount_ext2fs /dev/ad0s1 /mnt
mount_ext2fs: vfsload(ext2fs): No such file or directory
wintermute# mount_ext2fs /dev/ad0s2 /mnt
mount_ext2fs: vfsload(ext2fs): No such file or directory
Can anyone help me?
Thanks
Tiarnan
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