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WIERD -- GPT NTFS 3TB HDD issue
Background:
Had a small power outage (no more than 1/4 sec) Desktop shutdown (bios setting) I restarted but failed to boot - unknown OS or some such msg.
It is a 3 HDD duel boot Win7-64/Win10-64, OS are on diff partitions - diff HDDs.
After the power outage, Somehow Win7 was lost to the boot up, could boot to Win10 via repair disk method, tried restart repair 6 times on Win7, I tried easybcd, diskpart & other shell techniques, minitool partition, paragon partition, and so forth. (you know how it is you try stuff for hours)
I got the idea to try AHCI/EFI rather than MBR/IDE to see if it did any diff - no go - tried some tools in this mode. (** Did this I mess things up?)
FORCED Win7 working by removing 2 of 3 hdds but the Win7 install HDD, of course forcing the MBR and so forth.
I added a new, 2nd 3TB GPT disk, into system and copied non OS stuff from older replaced disk onto it (to replace a 750gb w/ 3TB). Things work fine - both Win7 & Win10, which I ended up re-installing Win10-64 to 1607/Anniversary on same HDD as Win7- Win10 is my backup OS.
Now 1 old disk w/ Win7 & Win10 ONLY, 1 New 3TB GPT hdd w/ lots of stuff - 2 partitions - 1 128mb partition - 2nd partition remainder.
*** Now Here's the Problem ***
Add #3 HDD!
I added my 1 yr old 3rd HDD, a 3TB GPT 2 partition disk - main partition of 'stuff' - small 128mb partition - remainder 2nd partition.
Booting to Win7 or Win 10, this #3 HDD is unknown via windows disk manager !!
This HDD is a 'NTFS GPT EFI system partition' - shown by minitool & paragon partition tools, the other FULLY functioning GPT 3TB disk is a 'NTFS GPT data partition' partition.
Oddly last night using the above tools along w/ diskpart and other shell tools - trying anything I could & found suggested via searches, the 3rd HDD (O:) got somehow 'visible' to Windows fully, both Win 7 & 10 - restart NOT a shutdown reboot between !!
BUT !!! After a shutdown last night, now it is NOT visible again (2 hdd show 1 does not).
Here's the Wierd thing - if I hide the partition via shell OR partition tool, then UNhide the partition - it does not show in explorer BUT, if I use a shortcut to a directory on HDD #3 - IT IS WORKING AND THERE !!!
But windows explorer does NOT show the Label '3TB-O' just 'O:' so it is not 'really' there - if I refresh explorer 'O:' disappears - but if I shortcut to it again, it re-appears, repeatedly !!
I seems normal in use, when there - windows disk manager still does NOT see it !! Can copy and access files perfectly!
So I need help!! WIERD !!! PLEASE HELP ME FIX THIS !!!
Last edited by IJustWantItToGo; 02 Nov 2016 at 18:22. Reason: Removed screens info for privacy-not pertinent either.