I have a Lenovo G40 laptop, operating (unfortunately) on Windows 8.1, with a HDD which is slowly dying and doesn't read any usb drives nor CDs/DVDs. What I managed to do was copying everything, buying a similar HDD and making it a bootable drive with contents of Windows 8.1 ISO on it.

Now, the actual question: How should I partition the drive the way it would be possible to install the system while the Windows install files are directly on it (if it's possible in the first place of course)?

Should I set a small partition with setup files on it and leave the rest of the drive's space unallocated?

  • You should make a USB stick with an ISO downloaded directly from Microsoft using the official Media Creation tool and boot from it to install. – GabrielaGarcia Nov 5 '18 at 0:06
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    You should never make partitions on a disk Windows will be installed on. Windows should always be installed on unallocated space on a drive. – Ramhound Nov 5 '18 at 0:10
  • It's not impossible but a little tricky, it's definitely less complicated to use a different installation media (e.g. a stick as Gabriela suggested). I don't remember if I actually did it, but you'll find several guides on the internet. Let us know if you need more help. – Albin Nov 5 '18 at 0:32
  • @GabrielaGarcia I'm aware I should make a bootable pendrive but as I've pointed it out - the usb ports dont's work although the drivers are installed correctly. Any device connected via USB while the computer is running on the old HDD is "unknown" and any attempt to boot from a pendrive is impossible, because it's not listed in BIOS – Az. Nov 5 '18 at 0:39
  • @Ramhound does "should never" mean "mustn't"? I'm have not much options left, but you partially answered my question by saying that new OS should be always installed on unallocated space, thanks – Az. Nov 5 '18 at 0:43

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