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XP can use FAT32. FAT32 has file size limitations, but it is the most compatible. For drives larger than 32GB, exFAT is more efficient.

It depends on the size of the flash drive. If the drive is larger than 32GB, you'd need to use a third party app like Rufus.
https://rufus.ie/

You can also make bootable flash drives with Rufus.

I've never heard of Platinum brand before. Are you sure it says eFAT? It should be exFAT, not eFAT.

XP does NOT natively support exFAT. You'd need to install a patch for exFAT....

What is the problem exactly? The flash drive would have come formatted already. You didn't say the make/model of the flash drive, so we wouldn't know if it came formatted with FAT32 or exFAT. WinXP...

Are you using AHCI or RAID? If so, did you add the drivers during install?

https://www.lifewire.com/how-to-clean-install-windows-7-2624917
On Step 10, you need to click "Load driver", and then...

You don't need to low-level format. Seagate owns Maxtor now. If it's a really old drive, you can try to find the old version of Powermax.

If you wanted to wipe the drive, it's better to use...

Seatools can scan non-Seagate drives also, but it can only do repair actions on Seagate drives. If a drive is going bad, you're better off just getting a new drive rather than repairing it anyway.
...

* IMPORTANT! Plug in your destination USB HDD or flash drive BEFORE booting UBCD5 *
* If you plugged in your destination drive after boot, see the "Mounting Drives" section below *

Boot from the...

Remove MBR from USB flash drive using Windows

If you have a USB flash drive that was previously set up as bootable, but you want to make it non-bootable again:

*** Disconnect all USB drives...

To run a hard drive test:

Determine your hard drive's manufacturer:
- In Windows, look in Device Manager - Disk Drives
- In the BIOS, look for IDE or SATA drives (varies by motherboard)
- Open...