unknown error when trying to install windows 8.1

Mr Fredrick No · Dec 9, 2014

so i am trying to go back to 8.1 from this pos tech preview and i literally cannot do it every way i have read to try has ended in some error that pretty much just says this error can happen if a removable device is removed improperly and im not moving that is the error for the cd route now i try the usb well it says my hard drive i locked and i need to unlock it and try again ... how the hell did i lock my hard drive I may sound upset because i am I dont have hours and hours of time to spend on this i need it done like yesterday so can someone please help me out here i can do nothing

patrickIT · Dec 10, 2014

Use a Windows DVD (or USB Stick) to open a Repair Command Prompt. You can use RUFUS to create bootable USB .

Troubleshoot -> Advanced Options -> Command Prompt

// start the disk partition tool
diskpart
// if you have more find the correct disk and use its number
sel disk 0

list vol
// the drive where EFI is on is usually the first FAT32 volume - here 2
sel vol 2
// make that volume accessible
assign letter=z:
// leave the partition tool
exit
// navigate to the EFI stuff
z:
cd z:\EFI\Microsoft\Boot\
// fix the boot record
bootrec /fixboot
// restore the boot menu
bcdboot c:\Windows /s z:

note# do check that you use the correct drive letters when entering this commands.

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unknown error when trying to install windows 8.1

Mr Fredrick No

Reputable

patrickIT

patrickIT

Reputable

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