Windows 10 upgrade not possible due to inaccessible boot device.
Windows 10 upgrade not possible due to inaccessible boot device.
I’m trying to modernize my 5-year-old gaming PC to Windows 10 using a boot disc, but each time it shows an INACCESSIBLE BOOT DEVICE error. Why does this happen? I’ve installed Windows 10 on my 2010 laptop, and the specs match what’s listed in the signature.