#10 GAG doesn´t hide WXP partition


Hi there,
first of all, thank you very much for building such a nice
program, there´s nothing like GAG, and comercial
sofware like bootmagic doesn´t work as I need to. I just
want to know if you can give me a hand with a problem
with the last version of GAG (thanks again for the ISO
file, as I don´t have floppy drive!). I have two primary
partitions and an extended one. The first partition is a
WXP FAT32 partition, the second one is a W2K NTFS,
and the third one is the extended FAT32 partition. When
I boot the system up with WXP I just can see the
extended partition wich is exactly what I want. The
problem is that booting the system up with W2K all
partitions are visible from windows explorer.....
Do you have any clue about what´s wrong with the
program in this case?. Is there any configuration problem
in GAG?

Thank you very much in advance for your help

Javier Dominguez


  • Logged In: YES

    You have to enable the "Hide all primary partitions".

  • Logged In: NO

    Thats exactly what I did, and it works fine when booting
    with WXP, which can see just its system partition, but not
    whith W2K which can see all partitions...

  • Logged In: NO

    I have already checked that option, but it only works when
    booting from XP which is able to see just:
    - XP system partition
    - extended partition

    After that I double check that option and when booting when
    W2K I can see:
    - W2K system partition
    - XP system partition
    - extended partition

    Can you please tell me how to fix it?

  • Logged In: YES

    AFAIK, W2K "remembers" the drives available while being
    installed. This means that, if you want that W2K can't see
    the other primary partition, you must first hide that other
    partition and only then install W2k. After that, GAG will
    hide and unhide the partitions to make the system works as
    you want.
    To hide the partition you can use the linux's FDISK,
    partition magic, or even you can boot your W2k (so GAG will
    mark as hidden the first partition), reboot with the W2K's
    installer CD and install directly in the right partition.

  • Logged In: NO

    OK, I'll play with Partition Magic and I'll see what happens.
    I'll let you know as soon as I get a conclusion.

    Thank very much much for your help!

  • Logged In: NO

    Hi folks,
    have a look below:

    Hidden partition / true hidden partition
    If more than one primary C: partitions are present on a hard
    disk (e.g. DOS 6.22 and Windows 95) the assignment of drive
    letters to these partitions might lead to problems. These
    problems can be avoided if all but one of these primary C:
    partitions are hidden. It is then possible to boot only from the
    remaining non-hidden partition. The other C: partitions are
    not visible, i.e. they are considered as unknown partitions.
    The drive letter C: is thus always automatically assigned to
    the booted operating system.

    In order to hide partitions the value 10h is added to the
    partition ID. And in order to make a partition visible only this
    value 10h needs to be subtracted from the partition ID. The
    OS/2 boot manager uses the same scheme for hiding

    Both in the configuration program Boot-US and in the boot
    manager Boot-US only partitions which use drive letters can
    be hidden. Hiding partitions therefore applies only to the
    following partition IDs: 01h, 04h, 06h, 07h, 0Bh, 0Ch and 0Eh,
    (see list of recognized partition IDs). All other partitions (e.g.
    Linux with partition ID 83h) cannot be hid.

    True hidden partition:
    The simple method of hiding a partition described above does
    not work with Windows 2000/XP/2003. This means, even if
    the partition ID is switched to hidden, the partition is visible
    under Windows 2000/XP/2003. In order to true hide the
    partition the boot sector is additionally changed. Hence true
    hiding a partition means to change both the partition ID and
    the boot sector. Then the partition is not anymore recognized
    by Windows 2000/XP/2003.

    It is possible that Windows 2000/XP/2003 considers a true
    hidden partition as unformatted. This can be changed by
    removing the drive letter from a true hidden partition. This
    prevents that you accidentally format such an "unformatted"
    partition thereby deleting all existing data on that partition.
    Drive letters are assigned resp. removed within the Windows
    disk administrator (Computer Management / Storage / Disk




  • Logged In: NO

    Hi Again,
    could you please confirm me that the information below is
    right? Is GAG "truly hidding" my XP partition when booting
    from W2K?