Windows 10: Effing Win 10 "upgrade" from Win 7 does not recognize an internal hard drive

Just "upgraded" and that term hardly fits to Win 10 from 7, and now my computer does not recognize an 8TB internally mounted hard drive. What's the fix? Tried MiniTool partition wizard free version, and it can't even find the drive. Thanks again for all you do to make life easy, Microsoft... Not!

:)

 

No access to 2nd hard drive after upgrading to Win 10 from Win 7

I just upgraded to Win 10 from Win 7 and my 2nd 1Tara Sata hard drive is listed on This PC as E: NTSF but clicking on it just says "location is not available" "E:/ is not accessible" "access is denied". Right clicking on it's properties/security options
get me no where, just says I don't have read permission, etc... (I'm logged is as administrator). Under Disk Management it's listed as Disk 1 Basic 932 GB online. The drive is new and worked fine with win 7 before the upgrade and it has all my important
files backed up on it. I've searched everywhere and can't find a solution except to format, lose my stuff, and try to recover with an outside program. Very frustrated...Help please!

PS. I've done all Win 10 updates, restarted many times, switched Sata connections internally....

 

Win 10 upgrade will no longer recognize 2nd internal drive.


I upgraded my Dell Insperion from Win 7-64 to Win 10 home 64, and it no longer sees my 2nd internal hard drive. I tried a scan in device manager but it did not help. Any advice?

 

Recommend hardware changes for upgrading from Win-7 to Win-10

Bree
I followed your suggestions (2nd Aug 19) for installing Win-10. Made the bootable flash drive successfully through the media creation tool. But when I attempted to upgrade and activate to Win-10 (64 bit) from within Win-7 (Pro-32 bit), I got the following error message:

Error # OxC1900101-Ox20017. " The installation failed in the SAFE_OS phase with an error during BOOT operation"

I read the diagnostics under this error number and carried out the proposed fixes, i.e. update Win-7, uninstall Malwarebyte antivirus, disconnect all external hardware, e.g. printer, scanner, external hard drives. I then tried to repeat the steps to do the upgrade through the Win-10 bootable flash drive as before. Got the same error message.
Appreciate any further comments and suggestions as to (a) what does a failure in the SAFE_OS during boot operation mean, (b) what can I do to solve it. Is this anything to do with the hardware in my computer? I listed these in my first posting above.
Thanks for any help