The dual boot installed but windows depends on writing a special boot.ini to
ONE disk. if that disk fails the second boot may also fail. Moreover live
backup from disk 1 to disk 2 cannot be done because both the disks will be
in service

--
Uncle John
"Timothy Daniels" <TDaniels@NoSpamDot.com> wrote in message
news:gO-dneQPBpmljRDenZ2dnUVZ_s6dnZ2d@comcast.com...
> "Uncle John" wrote:
>> For those interested in dual booting from different or twin identical OS
>> I have happened on the following neat way of doing it:
>>
>> 1 Two disks master and slave, about same size. In my case SATA 74 GB
>> Westinghouse Raptor
>>
>> 2 Windows XP Pro installed with all apps on Master=Disk 0
>> 3 In Windows use CasperXP to diskcopy Disk 1 to Disk 2 (Windows 1 = Bios
>> 0)
>> 4 Reboot, set the bios with Slave=Disk 0 as first had disk boot priority,
>> set Boot from CD as the first general boot device
>> 5a Leave the Windows CD in the Optical Drive and reboot take care not to
>> touch a key while rebooting or the CD will be fired up, the PC will boot
>> into the master Disk
>> 5b Take the CD out and Reboot. The PC will boot into the slave disk
>> 6 The slave disk in my case for backup is updated nightly by Casper XP
>> scheduled copy (System Restore has to be disabled on the slave to be able
>> to diskcopy properly.
>>
>> The behaviour of being able to select which hard disk will may be
>> specific to my Gigabyte motherboard and Award bios, but the system will
>> work, ;less sweetly simply but switching the hard disk boot priority in
>> the bios before booting
>>
>> Ainsi dit. ansi soit!-
>> Uncle John
>
>
> Using Windows XP's built-in multi-boot manager would be easier.
> The only thing you have to do is see that another entry is added in
> the C:\boot.ini file. That can be done automatically when the 2nd
> OS is installed, via one of the tabs in msconfig, or manually using
> Notepad. See the Microsoft Knowledge Base for the syntax of
> boot.ini . The advantage of using the boot manager to multi-boot
> is that you can put multiple copies of the OS on a hard drive and
> be able to select which one gets loaded. With the method of
> adjusting the BIOS's HD boot order, you can only select which
> HD does the booting.
>
> *TimDaniels*