Boot boundary help - Question 2

[Woody]

Page 38 of Partition Magic 8 manual says:
"Having an LBA-compatible (Logical Block Addressing) MBR (Master Boot
Record) will make the boot code boundary null with Windows 98SE/Me/2000/XP"

Can someone explain what this means and how it would help me in installing 2
instances of XP Pro. (One instance of XP is for general use, the other is
for video editting only).

Thanks
Woody

 

[I'm Dan]

Page 38 of Partition Magic 8 manual says:
"Having an LBA-compatible (Logical Block Addressing) MBR (Master Boot
Record) will make the boot code boundary null with Windows 98SE/Me/2000/XP"

Can someone explain what this means and how it would help me in installing 2
instances of XP Pro. (One instance of XP is for general use, the other is
for video editting only).

Depending on your technical level, you may find the information on my
webpage helpful, www.goodells.net/multiboot -- in particular, the sections
on the boot process and multibooting principles. Your question in the other
thread ("Question 1") concerns the Microsoft method of multibooting. This
thread ("Question 2") concerns system bios' with "Int13 extensions". If you
have a hard disk greater than 8GB and Partition Magic can see all of it,
then you can ignore this "boot code boundary" issue.

 

[Woody]

Hi Dan, thanks for the Info & link , I'll see if I can absorb some of this
info....thanks again.

 

[Alex Nichol]

Page 38 of Partition Magic 8 manual says:
"Having an LBA-compatible (Logical Block Addressing) MBR (Master Boot
Record) will make the boot code boundary null with Windows 98SE/Me/2000/XP"

Can someone explain what this means and how it would help me in installing 2
instances of XP Pro. (One instance of XP is for general use, the other is
for video editting only).

LBA is the normal way of accessing sectors of a hard disk these days.
Instead of telling controllers what cylinder, head, and sector (CHS)
number to use, this just numbers off the sectors sequentially from the
start of the disk (It means BTW that there is a point at 128GB where you
have to change over to '48 bit LBA' because the original size for the
numbers runs out).

Using LBA means that limitations in the BIOS based on CHS numbers are no
longer relevant: Have a disk detected in BIOS as LBA and you can go
ahead with installing XP on a clean disk with no troubles from that, and
can have two instances in Primary partitions without having to worry
about placement or size of the second one