mounting ext3

[Nick Guenther]

On 12/2/06, Vim Visual <vim.unix at googlemail.com> wrote:
> Hi,
>
> I have attached now a disk with ext3 format on it and two partitions
> and I was expecting a /dev/sda1 or something like that. As a matter of
> fact I get sd0:
>
> melanos| dmesg| tail
> umass0 at uhub4 port 4 configuration 1 interface 0
> umass0: Cypress Semiconductor USB2.0 Storage Device, rev 2.00/0.01, addr 2
> umass0: using SCSI over Bulk-Only
> scsibus1 at umass0: 2 targets
> sd0 at scsibus1 targ 1 lun 0: <Maxtor 6, B200P0, 0 0> SCSI0 0/direct fixed
> sd0: 194481MB, 194481 cyl, 64 head, 32 sec, 512 bytes/sec, 398297088 sec total
> ugen0: at uhub2 port 2 (addr 2) disconnected
> ugen0 detached
> ugen0 at uhub2 port 2
> ugen0: STMicroelectronics Biometric Coprocessor, rev 1.00/0.01, addr 2
>
> In sd0 I have maaany things...
>
> sd0a#  sd0b#  sd0c#  sd0d#  sd0e#  sd0f#  sd0g#  sd0h#  sd0i#  sd0j#
> sd0k#  sd0l#  sd0m#  sd0n#  sd0o#  sd0p#
>
> I'd think it's c but then
>
> melanos| sudo mount_ext2fs  /dev/sd0c  /mnt/disc_usb200GB
> mount_ext2fs: /dev/sd0c on /mnt/disc_usb200GB: Input/output error
>
> ????
>
> For other choices
>
> melanos| sudo mount_ext2fs  /dev/sd0d  /mnt/disc_usb200GB
> mount_ext2fs: /dev/sd0d on /mnt/disc_usb200GB: Device not configured
>
> ???????
>
> In GNU/Linux I'd just get a /dev/sda0 and /dev/sda1, each for one
> partition in the usb disk... Or is it the ext4 format? We came to the
> conclusion that it should be as good as ext2 if it's safe unmounted...
> right?
>
> thanks,

Read the FAQ:
http://openbsd.org/faq/faq14.html#disklabel

Further, all the sd0* devices are not all hooked up, but they are
created and sit around in the directory anyway.

In particular, it's *not* c. c is the *entire disk* by convention.

-Nick