Re: Addressing logical partitions under an extended partition on amd64

[Chavdar Ivanov <ci4ic4%gmail.com@localhost>]

On 7 June 2010 01:38, Steven Bellovin <smb%cs.columbia.edu@localhost> wrote:
>
> On Jun 6, 2010, at 12:27 26PM, Chavdar Ivanov wrote:
>
>> Hi,
>>
>> I am tripple-booting my ThinkPad 61p (W7-64, NetBSD-current amd64 and
>> OpenSolaris). A few days ago I had to reinstall the whole thing, as
>> the old disk had some really bad areas on it (leftover from an earlier
>> system, still worked, but was starting to cause problems; the
>> diagnostics flatly failed). Unfortunately W7 uses two primary
>> partitions by default (I don't know, there may be a way to avoid it,
>> but I didn't bother much with this). NetrBSD is on the third primary
>> partition, leaving OpenSolaris on a logical one on the extended,
>> behind a 15GB FAT32 partition created to hold some data usable on all
>> three of them (I couldn't think of other means of having common data
>> between the three, short of a USB stick, which this in a way
>> emulates).
>>
>> I can access the FAT32 logical partition from W7 and OpenSolaris, but
>> for the hell of it can't figure out how to address it under NetBSD, if
>> that is possible at all. OpenSolaris finds that on /dev/rdsk/c5t0d0p5.
>>
>> Any Ideas?
>
> What is the output of 'disklabel wd0'?  'fdisk wd0'?  If nothing else, if you 
> can figure out the sectors you should be able to edit the disklabel to point 
> to that partition.


Thanks to all. Sorted.

The key was

   mbrlabel -wrf /dev/wd0d

Then i was able to mount /dev/wd0g as MSDOS.

>
>                --Steve Bellovin, http://www.cs.columbia.edu/~smb
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Chavdar Ivanov

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