0

When upgrading to Windows 10 it fails with the error WindowsUpdate_80070070 OR WindowsUpdate_dt000 - not enough disk space. According to the FAQ I need at least 8GB in order to upgrade, which I have on all three of my disks. On C: I have less than 11 though. Basically C: only contains Windows 8.1 and the upgrade files for Windows 10, there is almost no other data on there. Is there a way to upgrade from a different drive?

I have run the disk cleaning utility and I do not want to do a fresh install. I checked the drive with WinDirStat and there is no more data I can move or delete on C:. Any hints?

  • Upgrade also backup your Windows folder, how big is your current Windows folder? – Martheen Cahya Paulo Aug 7 '15 at 2:47
  • Much like "the cake is a lie" in portal 8gb is lie, try 16gb! What have you done? I will start a check list. – cybernard Aug 7 '15 at 2:51
  • How many GB are in this hidden folder? C:\ProgramData – cybernard Aug 7 '15 at 3:14
  • Is your C: drive the whole physical drive or just 1 or several partition? If there is more than 1 partition resize the other one and make c: larger. – cybernard Aug 7 '15 at 3:16
1
  1. Is your hibernation file off? From Administrative Command prompt

powercfg /h off

  1. Did you move your swap file to another drive?
  2. How big is c:\users\

Empty all of these folders

C:\Users\_Your_username_\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5
“C:\Users\_Your_username_\AppData\Local\Google\Chrome\Application”
“C:\Users\_Your_username_\AppData\Local\Chromium\Application”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Media Player”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Media Player\Image cache”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Messenger”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Windows Live\Contacts”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Windows Live\Contacts\your_email@live.com\15.4\DBStore\Backup\new”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Speech\Files\MSASR”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Speech\Files\TrainingAudio”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Windows\Explorer”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Windows\Burn\”
“C:\Users\_Your_username_\AppData\Local\Temp”
“C:\Users\_Your_Username_\AppData\Roaming\Thunderbird\Profiles\u7n8j42k.default”.
c:\windows\temp
c:\program files\NVIDIA Corporation\Installer2

C:\Users\<name>\AppData\Local\Temp
  1. Turn off Windows update Move C:\windows\SoftwareDistribution to another drive and junction it

    mklink /J "C:\windows\SoftwareDistribution" "d:\junctions\SoftwareDistribution"

Turn windows update back on.

  1. Delete all but your last system restore point.
  2. Re-install,Move,Junction the largest folders in

    "c:\program files"

    "c:\program files (x86)"

More in a minute.

You need to move and/or junction stuff to another drive. Is My Documents/Documents still on the C: drive? Move them!

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.