📎 AI Summary:
The thread discusses attempts to install Windows 8.1 x86 directly from a copy of the installation files on a separate partition without using a DVD or USB drive, but the user encounters errors such as "bootsect.exe is not a Win32 valid application" and disk boot failure messages. Responders advise that Windows 8.1 requires a valid product key and proper installation procedures, noting that copying DVD contents directly may not make the partition bootable and that Windows XP must be updated to SP3 for upgrade compatibility. Overall, the consensus is that a clean, correctly initiated installation—preferably using supported media—is necessary for success.

Amanda Castro

New Member
Joined
Sep 12, 2014
Messages
2
Thread Author #1
Hello!

I'm using Windows XP 32bits(original)(in C:\) and i'm trying to install Windows 8.1 x86(original)(in D:\), but i'm trying to do without using flashdrive or dvd. So, to do that, i did what read in internet:
Code:
1- Copy the following content from your Windows 8 disc or ISO to D:\
1.1- Boot
1.2- Sources
1.3- Bootmgr
2- In command terminal enter with:
2.1- diskpart
2.2- list disk
2.3- select disk 0 //My disk number is"0"
2.4- list partition
2.5- select partition 2 //There are three options im my hd: c:, d:, and e: I want to install it in d: so, number 2
2.6- active
2.7- exit
2.8- D:\boot\bootsect.exe /nt60 D:
3.0- Don’t format your d: this time in the installer – otherwise it will erase the Windows 8 setup files too.
I got an error message in 2.8.
bootsect.exe is not a Win32 valid application
.
To fix that, i found in internet an other bootsect.exe file(not sure if is genuine)
After replace with the file he executed with no error.

The problem is, when i reboot my system, i get this error message:
"DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER"

How can i fix this?
Use dvd or flashdrive is not an option for while for me!
 

davidhk129

Essential Member
Joined
May 19, 2012
Messages
1,315
1. You have not mentioned if you have a VALID win 8.1 product key.
2. Windows 8.1 isn't designed for installation on PCs running Windows Vista or Windows XP.
3. You will need Link Removed to check if your PC meets the system requirements for Windows 8. If you're running Windows XP, you need to have Windows XP Service Pack 3 (SP3) installed to use Windows 8 Upgrade Assistant.
4. If you get the green light from Windows 8 Upgrade Assistant, it is recommended that you install Win 8 first with a valid Win 8 product key. When Win 8 is successfully installed and fully updated, then go to Windows Store and upgrade to Win 8.1 for free.

What you have been trying to do so far won't work, I am afraid.
 

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Amanda Castro

New Member
Joined
Sep 12, 2014
Messages
2
Thread Author #3
1. You have not mentioned if you have a VALID win 8.1 product key.
Yes, i have.

2. Windows 8.1 isn't designed for installation on PCs running Windows Vista or Windows XP.
But i'm trying to make a clean installation. Windows 8 will not see my Xp!
I was wondering if i just copy all content of Windows dvd to this partition, d:\ and change c:\boot.ini would work.
What do you think? Or do something to, once all dvd content pasted in d:\make this d:\ bootable.
 

davidhk129

Essential Member
Joined
May 19, 2012
Messages
1,315
Please my point #3 again.
What did Windows 8 Upgrade Assistant say ? If it says your machine is not ready/suitable for Win 8, it's not for Win 8.1 either.
Do you have Windows XP Service Pack 3 (SP3) installed ?
 

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