[syslinux] Hiding partitions at boot time

[Stuart Foster]

Hi,

My problem is I have a particular system which has Linux (LFS) and 
Windows XP on one drive and Windows 10 on a second drive.
I use extlinux to boot my systems and all three systems boot as 
expected, however in use I have found unsatisfactory interactions 
between the Windows XP and the Windows 10 systems.

My question is:

Is it possible on booting one of the Windows systems to hide completely 
the other Windows systems partitions, I have experimented with the 
chain.c32 "hide" commands but I have failed to find a satisfactory solution.

Attached is the text from my extlinux.conf file and the output from 
fdisk -l. for reference.

The version of syslinux I am using is 6.03.

Thanks

Stuart


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extlinux.conf:

ui vesamenu.c32
prompt 0
timeout 300
default LFSmain
menu resolution 1600 1200
menu background Pingu.png
menu title Intel PC 'Pingu' Boot Menu: V1.0
menu rows 9
menu color unsel 37;44 #ff008000 #20008000 std
menu color sel 7;37;40 #ff00f000 #20008000 std
menu separator
label LFS10
    menu label Windows 10
    kernel chain.c32
    append hd1 1
menu separator
label LFSxp
    menu label Windows XP
    kernel chain.c32
    append hd0 2
menu separator
label LFSmain
    menu label Linux-4.10.8
    linux /vmlinuz-4.10.8
    append ro root=/dev/sda4 radeon.modeset=1 iommu=pt iommu=1 radeon.dpm=1 drm_kms_helper.edid_firmware=edid/1600x1200.bin
menu separator
label LFSaux
    menu label Recovery
    linux /vmlinuz-4.10.6
    append ro root=/dev/sda4 radeon.modeset=1 iommu=pt iommu=1 radeon.dpm=1 drm_kms_helper.edid_firmware=edid/1600x1200.bin
menu separator


fdisk -l :

Disk /dev/sda: 119.2 GiB, 128035676160 bytes, 250069680 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x430f27bc

Device     Boot     Start       End   Sectors  Size Id Type
/dev/sda1  *         2048     67583     65536   32M 83 Linux
/dev/sda2           67584 131137535 131069952 62.5G  7 HPFS/NTFS/exFAT
/dev/sda3       131137536 139526143   8388608    4G 82 Linux swap / Solaris
/dev/sda4       139526144 250069679 110543536 52.7G 83 Linux


Disk /dev/sdb: 111.8 GiB, 120034123776 bytes, 234441648 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x1d747409

Device     Boot  Start       End   Sectors   Size Id Type
/dev/sdb1  *      2048    264191    262144   128M  7 HPFS/NTFS/exFAT
/dev/sdb2       264192 234435599 234171408 111.7G  7 HPFS/NTFS/exFAT