can't upgrade 0xc000000f

David Bisset · 1 Sep 2015 at 23:15

I've been trying to go from win 7 pro to win 10 pro on my clevo-based laptop and am having trouble so thought I'd ask, see if anyone has any useful ideas. I was getting a 'Missing operating system' error after the reeboot during 'copying files' section of the install from my admittedly non-standard win7 install (bunch of partitions, several drives etc) so took out all but one drive and dropped down to a single partition which win 7 was quite happy with but got the same error. I recalled that by default win 7 makes 2 partitions (one for sys restore) so I destroyed all partitions and let it do it's thing so it'd be as standard a setup as possible.

Now when I try and upgrade I get a 'repairing' message followed by error 0xc000000f and looking in diskpart (list volume) it's got filesystem RAW not NTFS as described here although I've got an extra volume over them marked as hidden (OEM reserved) - possible culprit? Only wiped out partitions via win 7 install CD's partition mgmt options so probably missed the hidden one.

I can do the fix as described in that link to make it report as NTFS but on a reboot it does the same stuff and shows as before. I'm not sure how to fix this

Just to make sure my computer can run win 10 pro I did a clean install and that went absolutely fine so there shouldn't be any reason I can't get there eventually - please help! I'm several full reinstalls in and losing the will

FredFlint · 3 Sep 2015 at 16:28

I had this problem, Think you will need to reinstall Win 7, then let Windows 10 do the upgrade.

OspreyO · 3 Sep 2015 at 16:40

I've never had much success fixing an OS after getting a 'Missing operating system' errors. I think I'd start over if I was you.

Under normal conditions when I've got an error on Windows Update I find un-installing and a few Windows Updates, can make it fix itself.

Its probably not relevant to a Win10 upgrade though.

varkanoid · 3 Sep 2015 at 17:24

I had same error with my Dad's laptop. Tried alsorts. In end replaced the SSD with a larger new one and cloned the drive to it then did the Windows 10 upgrade and it worked first time.

David Bisset · 3 Sep 2015 at 17:48

Cheers for the input all

I'll have another go shortly.

I've done clean win 7 installs a couple of times right before trying to upgrade (well, plus drivers & windows updates) with no luck with varied partition setups... perhaps the SSD capacity is the issue (it's just a wee 120GB Intel 520) so will shove a bigger drive in to see if that helps any

if it does I should then be able to clean install back onto the SSD afterwards (and put a bigger SSD on my shopping list, or nab one out of my desktop)

russell664 · 4 Sep 2015 at 11:47

SFC /SCANNOW doesn't also fix stuff either.

Sometimes a clean install is worth it overall.

David Bisset · 5 Sep 2015 at 23:10

varkanoid said:
I had same error with my Dad's laptop. Tried alsorts. In end replaced the SSD with a larger new one and cloned the drive to it then did the Windows 10 upgrade and it worked first time.

Winner!

Swapped to a bigger drive and using the exact same process as previously failed went perfectly first time. I guess when the upgrade thing says it's checking you've enough space it messes up or something.