Re: Looking for suggestions for bootcamp sessions

From: Hoff Hoffman (hoff-remove-this_at_hp.com)
Date: 02/25/05 

Date: Fri, 25 Feb 2005 10:00:53 -0500

FredK wrote:

>
> Frankly, I don't know. Hoff may have a way. Backup does a callback to hook
> the boot stuff up, including creating the partition headers - I don't know if
> there is a way to have backup do this so that a new GUID isn't created.

   The SET BOOTBLOCK command and the underlying undocumented foreign
command interface can both optionally preserve an existing on-disk GUID
when re-writing the bootblock. The underlying undocumented foreign
command interface can also decode and display the contents of a
bootblock, this intended to permit an additional check within the
REBOOT_CHECK processing in SHUTDOWN.

   The EFI tools are certainly fodder for a bootcamp session.

   As for a discussion elsewhere in the thread, a corruptor was
discovered within EFI$CP late in V8.2, and access was deliberately
disabled, and this disablement of this undocumented tool was then
referenced in the release notes. (The irony here was not lost on at
least some of us, either.) EFI$CP is used to manage the boot partition.

   If I get some spare cycles, I'll edit and post out the I64 bootstrap
details and the sequence -- this bootstrap sequence material and the
various EFI tools will be fodder for one of the sessions I expect to be
presenting at the bootcamp, too. (Assuming Sue accepts the session, of
course.)

Relevant Pages

  • Re: FIXMBR
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    (microsoft.public.windowsxp.basics)
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    (microsoft.public.windowsxp.newusers)
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    ... the boot process always begins with the ... >first partition on the first HD, ... >WinXP there. ... create backup images very methodically. ...
    (microsoft.public.windowsxp.basics)
  • Re: BootIt NG high level steps - best approach??
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    (comp.sys.ibm.pc.hardware.storage)