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Re: [Libguestfs] does guestfs_list_partitions() work with Windows 95 images?



On Tue, Dec 16, 2014 at 10:29:25AM -0500, Skippy VonDrake wrote:
> >
> > The appliance kernel couldn't find any partitions at all on the disk.
> >
> > Is it a raw format disk image, or some other format that qemu can
> > reasonably be expected to read?
> 
> 
> I used the "Advanced Options" of Macrium Reflect (on Windows 7) to do a raw
> byte copy.
> 
> If it is, then yes I'd say the image is corrupted.  However you'd
> > probably want to hexdump it to see what's really going on.
> >
> 
> I looked at the first sector wondering if Macrium prepended its own stuff
> but it looks like the start of a boot sector to me.
> 
> Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
> 00000000  EB 3E 90 4D 53 57 49 4E 34 2E 30 00 02 40 01 00  ë> MSWIN4 0     
> 00000010  02 00 02 00 00 F8 FC 00 3F 00 40 00 3F 00 00 00       øü ?   ?   
> 00000020  41 E0 3E 00 80 00 29 91 2C 95 24 20 20 20 20 20  Aà>.€.)‘,•$
> 00000030  20 20 20 20 20 20 46 41 54 31 36 20 20 20 F1 7D        FAT16   ñ}

Looks like a disk sector to me too.  However the partition table
is further on.  See:

https://en.wikipedia.org/wiki/Master_boot_record#Sector_layout

Rich.

> As for examining the rest of the image at the hex level and making an
> assessment - that is beyond my scope of expertise.
> But certainly it could have been corrupted.
> I'll see if I can get access to the drive and use Linux (and dd) to make a
> new image.

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-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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