Re: Issues with Bootloader Vista

[Boris Samorodov]

On Tue, 24 Jul 2007 09:47:55 +0930 Daniel O'Connor wrote:
 On Tue, 24 Jul 2007, Kris Moore wrote:
  We've released our 1.4 BETA of PC-BSD this week, and one of the
  issues which has come up is the broken support for dual-booting with
  a Vista system. Apparently the FreeBSD boot loader messes up some of
  Vista's boot process. Here's what one of our users tracked it down
  to:
 
  .
 .. If a user wises to re size the Vista partition then dual boot the
  user maybe surprised to find Vista will fail to boot from the BSD
  boot loader with the following error message:
 
  The file /Windows/system32/winload.exe can not be found or is
  corrupt.
 
  This is due to the BSD boot loader overwriting a UUID in the MBR the
  Vista OS uses to boot for some reason as it was not in the Beta or
  the RC.
  .

 I think this is similar to the signature bytes Windows XP uses to 
 remember which disk is which.

 I was bitten recently when I reinstalled XP on my laptop - the installer 
 picked E: (NFI why since it was the first partition on the disk) and 
 after I reinstalled the FreeBSD MBR it decided it hadn't seen the disk 
 before and assigned it 'C' and so the swapfile location was invalid 
 which means you can't login (even in safe mode)..

 I think the solution would be to ensure the 4 bytes it uses are 
 preserved by boot0cfg (although I think sysinstall would need 
 modification too), this page shows the bytes in question..  
 http://www.multibooters.co.uk/mbr.html

 I dunno if boot0 has 4 bytes to spare tho :(

Seems that I've seen patches for 6.1 (the text is in russian though):

http://groups.google.ru/group/fido7.ru.unix.bsd/browse_thread/thread/670c189b1957e12e/f0cb67c7ad4d890f?lnk=stq=grosbein+group%3Afido7.ru.unix.bsd+NT+Drive+Serial+Numberrnum=1hl=ru#


WBR
-- 
Boris Samorodov (bsam)
Research Engineer, http://www.ipt.ru Telephone  Internet SP
FreeBSD committer, http://www.FreeBSD.org The Power To Serve
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Re: Issues with Bootloader Vista

[Daniel O'Connor]

On Tue, 24 Jul 2007, Kris Moore wrote:
 We've released our 1.4 BETA of PC-BSD this week, and one of the
 issues which has come up is the broken support for dual-booting with
 a Vista system. Apparently the FreeBSD boot loader messes up some of
 Vista's boot process. Here's what one of our users tracked it down
 to:

 .
.. If a user wises to re size the Vista partition then dual boot the
 user maybe surprised to find Vista will fail to boot from the BSD
 boot loader with the following error message:

 The file /Windows/system32/winload.exe can not be found or is
 corrupt.

 This is due to the BSD boot loader overwriting a UUID in the MBR the
 Vista OS uses to boot for some reason as it was not in the Beta or
 the RC.
 .

I think this is similar to the signature bytes Windows XP uses to 
remember which disk is which.

I was bitten recently when I reinstalled XP on my laptop - the installer 
picked E: (NFI why since it was the first partition on the disk) and 
after I reinstalled the FreeBSD MBR it decided it hadn't seen the disk 
before and assigned it 'C' and so the swapfile location was invalid 
which means you can't login (even in safe mode)..

I think the solution would be to ensure the 4 bytes it uses are 
preserved by boot0cfg (although I think sysinstall would need 
modification too), this page shows the bytes in question..  
http://www.multibooters.co.uk/mbr.html

I dunno if boot0 has 4 bytes to spare tho :(

-- 
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
The nice thing about standards is that there
are so many of them to choose from.
  -- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C


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