Windows 10: usb live stick, lost bootability and accessibility

i made bootable usb stick using winsetupfromusb.exe, content multiple useful tools, such hirenbcd, ubcd, antivirus, tails... and many *.iso.
few days ago, i was messing around ubcd tools and ended ruined my boot usb repair tool.
all data and iso are intact, all subfolder are still browse able using "active disk editor" and winhex.

disk management console (win):
shows "online", "k" drive, healthy (active, primary partition), RAW

when i plug in computer to boot up :
it boot into grub4dos (instead of landing at menu for me to select which iso to boot up with ), it just landed in
grub>
**because "invalid first FAT entry (0=1001)!" *** it can't locate menu.1st file.


when i type in some grub commands:

grub> boot
error 8: kernel must be loaded before booting

grub> configfile
warning! invalid first FAT entry (0=1001)!
error 15: file not found

grub> geometry
drive 0x80 (LBA): C/H/S=1906/255/63, sector count/size=30619890/512
partition num: 0, active, Warning! invalid first FAT entry (=0x1001)!
filesystem type is fat, partition type 0x0c



from all the info that i provided, anybody can teach me way to solve the problem or explain the issue

thx
ew

:)

 

Multi-bootable USB

Hey guys from TPU, couldn't find any specific thread pertaining to the question asked on title. As mentioned, I'm trying to create a bootable USB, but with many specifics boots available.

I've been trying to create one with multiple boot device including one that enables me to run Windows 10 directly on the USB Thumb Drive but to no avail.

The list of bootable images i'm trying to create are

1. Windows 10 (A full OS running from thumb drive)
2. Windows 10 ISO (Bootable disk image for fresh install)
3. MemTest86+

Have tried YUMI or UUI from the website USB PenDrive Linux but as this is my first time, i don't know how am i screwing up or am doing it right.. Anyone got a rough idea on a step by step guide? Thanks!

 

Installing windows off of a USB stick

Step By Step from vista:
From admin cmd prompt

1. diskpart
1a. list disk
2. select disk 1 (replace 1 with your usb drive)
3. clean
4. create partition primary
5. select partition 1 (replace 1 with your usb drive)
6. active
7. format fs=fat32
8. assign
9. exit

Copy Windows Vista's DVD ROM content to the Flash Drive

xcopy d:\*.* /s/e/f e:\ (d being your vista cd and e being your usb stick)

And that's it, boot off your usb disk

 

Ipod bootable drive?

I want to know if I can make my ipod a usb bootable drive.. will it mess up my ipod? I need to flash my video card back to normal.. Neros bootable cd gave me an error. I used a step by step guide, but thats another story.