USB devices slow or halt PC boot

Question

I'm trying to add 25 values in my firebase scheme. I tried doing a simple for loop (in ios using swift) like this:

for var index = 1; index < 26; ++index {
        let dict = ["FullName" : "\(index)"]
        firebaseRef.childByAppendingPath("\(index)").setValue(dict)
}

All the data gets uploaded, but it's out of order. What can I do to fix that?

Here's the order that it goes to:

Solution

Yes the USB wireless mouse and keyboard prevent a proper boot. Disabling in BIOS only helps partially. It also prevents a slave drive from appearing at all. Some mouses have a switch, which should be turned on only after Win loads, but unplugging the wireless keyboard is a pain. Makes you wonder if manufacturers and Microsoft ever talk to each other. Well I can understand not talking to Microsoft, but the user suffers in the process.

Comments

[William Lawn Stewart]

You could always use a PS2/USB adapter to plug your keyboard & mouse into the PS2 ports, if you have some. PS2 ports allow you to press more keys at once and have lower latencies, but you might not be able to use fancy media keys.

[Synetech]

@William, actually, I find the opposite to be true. There are some keys on my keyboard that only work when it’s plugged in to a PS/2 port, not USB.

[10100111001]

Can you please provide me your Computer Specs especially the motherboard? I have noticed this problem majorly with some Gigabyte motherboards.

[ElvisFanTCB]

Thanks for the response. Unfortunately network boot is disabled already. Interestingly enough, the wireless adapter only stalls the boot process if the system is rebooted. A shutdown and startup boots normally.