Bug#596391: grub: Grub2 cannot boot on JFS partition of / (root) !!

[yellowprotoss]

Package: grub
Severity: important

Dear Sir,

Grub2 cannot boot on JFS partition:
part1 JFS /
part2 SWAP swap

and here it is : 

device mapper error, 
no way to install grub-installer (hd0)

You can even try mannually, too same error.

Grub-gives at boot error 5

forget lilo alternative it too doesnt like JFS apparently.

Please a support as soon as possible, since JFS is more stable and very much more reliable than EXT4.

Best regards
Yellow

-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-5-686 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash