A
Anna
Guest
"bobster" wrote in message
news:ulqlTmDqKHA.4836@TK2MSFTNGP05.phx.gbl...
> Anna,
>
> I've hit a snag. When I partition my external HD into 3 partitions, only
> one (always the first) partition can contain a bootable volume. The
> second
> and third partitions have unique drive letters assigned but my BIOS
> recognizes only the first volume drive letter in its lists of bootable
> drives. I have found no way of changing the BIOS to overcome this
> limitation.
>
> When I go to XP disk management, the first volume shows up as the "primary
> partition" while the second and third volumes show up as "extended
> partition
> logical drives". When I right click on either of these two partitions,
> there is no "mark partition as active" option as there is when right
> clicking the first partition. I have tried using XP, EASEUS and Casper to
> partition the external HD into 3 partitions and all resulted in three
> partitions in which only partition one could be used to boot. The
> limitation may possibly be in the Casper cloning concept but I have read
> their use notes and can't find an answer to the problem.
>
> At this point it appears to me that I cannot have two bootable partitions
> on
> a single hard drive unless I go to a true dual boot configuration for W7
> and
> XP. At this point I am considering reverting to my "plan" B approach,
> i.e.
> using two separate external HDs in the Vantec enclosure. I have an extra
> HD
> and changing them in the enclosure is a five minute task.
>
> If you have any other thoughts let me know.
bobster:
As I previously indicated you will use the XP Disk Management utility to
"Mark Partition as Active" depending upon which partition contains the
bootable OS (on your external HDD) that you wish to boot to. Using your
example where (presumably) you've cloned the contents of your XP OS to the
first partition on your external HDD and you've cloned the contents of your
Win7 OS to the second partition on the external HDD (the third partition on
the external HDD does not contain a bootable OS according to the info you
previously provided)...
Assuming the first partition on the external HDD has been designated as
"Active", the system will boot to that OS when your BIOS boot priority order
setting indicates a first HDD boot to the external drive.
If, on the other hand, you desire to boot to the Win7 system it will be
necessary use Disk Management as I explained above. You would right-click on
the partition listing containing the Win7 OS and from the sub-menu select
"Mark Partition as Active". The system will then boot to that OS when your
BIOS boot priority order setting indicates a first HDD boot to the external
disk.
Subsequently (after booting to your Win7 OS) when you want to boot to your
XP OS you will need to go through the same process but this time "marking"
the partition containing the XP OS as "Active".
Please understand that the BIOS boot priority relates to a specific HDD
installed in the system. Where the HDD contains multiple bootable OSs (as
you have on your external HDD) the boot will be to the "Active" partition on
that disk. Thus the need for making ("marking") that partition "Active".
You might want to refer to my previous posts in this thread in which I
further explained the above in a bit more detail with reference to your
specific situation.
Anna
news:ulqlTmDqKHA.4836@TK2MSFTNGP05.phx.gbl...
> Anna,
>
> I've hit a snag. When I partition my external HD into 3 partitions, only
> one (always the first) partition can contain a bootable volume. The
> second
> and third partitions have unique drive letters assigned but my BIOS
> recognizes only the first volume drive letter in its lists of bootable
> drives. I have found no way of changing the BIOS to overcome this
> limitation.
>
> When I go to XP disk management, the first volume shows up as the "primary
> partition" while the second and third volumes show up as "extended
> partition
> logical drives". When I right click on either of these two partitions,
> there is no "mark partition as active" option as there is when right
> clicking the first partition. I have tried using XP, EASEUS and Casper to
> partition the external HD into 3 partitions and all resulted in three
> partitions in which only partition one could be used to boot. The
> limitation may possibly be in the Casper cloning concept but I have read
> their use notes and can't find an answer to the problem.
>
> At this point it appears to me that I cannot have two bootable partitions
> on
> a single hard drive unless I go to a true dual boot configuration for W7
> and
> XP. At this point I am considering reverting to my "plan" B approach,
> i.e.
> using two separate external HDs in the Vantec enclosure. I have an extra
> HD
> and changing them in the enclosure is a five minute task.
>
> If you have any other thoughts let me know.
bobster:
As I previously indicated you will use the XP Disk Management utility to
"Mark Partition as Active" depending upon which partition contains the
bootable OS (on your external HDD) that you wish to boot to. Using your
example where (presumably) you've cloned the contents of your XP OS to the
first partition on your external HDD and you've cloned the contents of your
Win7 OS to the second partition on the external HDD (the third partition on
the external HDD does not contain a bootable OS according to the info you
previously provided)...
Assuming the first partition on the external HDD has been designated as
"Active", the system will boot to that OS when your BIOS boot priority order
setting indicates a first HDD boot to the external drive.
If, on the other hand, you desire to boot to the Win7 system it will be
necessary use Disk Management as I explained above. You would right-click on
the partition listing containing the Win7 OS and from the sub-menu select
"Mark Partition as Active". The system will then boot to that OS when your
BIOS boot priority order setting indicates a first HDD boot to the external
disk.
Subsequently (after booting to your Win7 OS) when you want to boot to your
XP OS you will need to go through the same process but this time "marking"
the partition containing the XP OS as "Active".
Please understand that the BIOS boot priority relates to a specific HDD
installed in the system. Where the HDD contains multiple bootable OSs (as
you have on your external HDD) the boot will be to the "Active" partition on
that disk. Thus the need for making ("marking") that partition "Active".
You might want to refer to my previous posts in this thread in which I
further explained the above in a bit more detail with reference to your
specific situation.
Anna