Hey guys, so at work we have two flash drives. One is a customized XP boot build that we use for imaging XP installations. And the other is a Win7 one. What im trying to accomplish is get htem both on one flash drive, with a menu where i can choose which one to boot. Ive had 0 success. Ive tried over 4 programs like xboot, sardu and a few other multiboot apps that you load isos into and it uses grub4dos or syslinux to create a bootable usb like im trying to do. The farthest ive gotten is where i select one of hte builds and it just loads a GRUB> prompt. Heres is what the two usb drives look like content wise. First one in win7, second is xp Directory of G:\ 03/07/2012 02:57 PM <DIR> Boot 07/13/2009 05:39 PM 383,562 bootmgr 07/13/2009 05:45 PM 667,712 bootmgr.efi 03/07/2012 02:57 PM <DIR> EFI 03/07/2012 02:56 PM <DIR> Sources 2 File(s) 1,051,982 bytes 3 Dir(s) 0 bytes free H:\>dir Volume in drive H is WinXPeCore Volume Serial Number is D88D-6262 Directory of H:\ 07/27/2011 02:17 PM 361,252,864 ecorepe.iso 03/07/2012 03:01 PM <DIR> i386 03/25/2005 01:42 AM 47,772 ntdetect.com 03/25/2005 01:33 AM 298,096 ntldr 06/09/2005 03:55 PM 10 WIN51 06/09/2005 03:55 PM 10 WIN51IA 03/25/2005 01:48 AM 2 win51ia.SP1 07/08/2005 10:14 AM 279 winbom.ini 02/04/2009 01:24 PM 165 winnt.sif 8 File(s) 361,600,366 bytes 1 Dir(s) 0 bytes free