AmazingGecko Posted November 5, 2015 Share Posted November 5, 2015 (edited) Apologies if this is in the wrong section but it seemed as good as any. Ok, so I've just upgraded my NAS unit and disks. All seemed good until I discovered that some folders had mysteriously disappeared. No fear, I thought, as I still have the 2 drives I swapped out with the original folders still on them. I plug one in to my rig and the BIOS happily acknowledges it's existence. Windows 10 however seems less sure of itself. Disk Management shows it with all it's partitions, volumes, etc, but the drive just isn't explorable. The unit was a Synology DS212J and the drives are WD20EARX. So, is this a Windows 10 issue, some kind of proprietary software that Synology used when in the unit or something else I've overlooked? Any help would be appreciated. Cheers James Edited November 5, 2015 by AmazingGecko Link to comment Share on other sites More sharing options...
Tripredacus Posted November 5, 2015 Share Posted November 5, 2015 Can you post a screenshot of how it appears in Disk Management? Link to comment Share on other sites More sharing options...
AmazingGecko Posted November 5, 2015 Author Share Posted November 5, 2015 Updated post with screenshot attached Link to comment Share on other sites More sharing options...
Tripredacus Posted November 5, 2015 Share Posted November 5, 2015 First thing you can try is to right-click on the 1858 GB partition and see if you can assign a drive letter to it. Otherwise, open an elevated command prompt and run these and post results. diskpartlist disk (note the disk number the 2TB disk shows up as)select disk # (select the 2TB disk)list partlist vol Link to comment Share on other sites More sharing options...
AmazingGecko Posted November 5, 2015 Author Share Posted November 5, 2015 Microsoft Windows [Version 10.0.10240]© 2015 Microsoft Corporation. All rights reserved.C:\WINDOWS\system32>diskpartMicrosoft DiskPart version 10.0.10240Copyright © 1999-2013 Microsoft Corporation.On computer: THOR-PCDISKPART> list disk Disk ### Status Size Free Dyn Gpt -------- ------------- ------- ------- --- --- Disk 0 Online 223 GB 0 B * Disk 1 Online 1863 GB 129 MBDISKPART> select disk 1Disk 1 is now the selected disk.DISKPART> list part Partition ### Type Size Offset ------------- ---------------- ------- ------- Partition 1 Primary 2431 MB 128 KB Partition 2 Primary 2048 MB 2432 MB Partition 3 Primary 1858 GB 4608 MBDISKPART> list vol Volume ### Ltr Label Fs Type Size Status Info ---------- --- ----------- ----- ---------- ------- --------- -------- Volume 0 C NTFS Partition 222 GB Healthy Boot Volume 1 FAT32 Partition 100 MB Healthy System Volume 2 NTFS Partition 450 MB Healthy HiddenDISKPART> Link to comment Share on other sites More sharing options...
AmazingGecko Posted November 5, 2015 Author Share Posted November 5, 2015 Only options available for that disk is "Delete Volume" and "Convert to Dynamic Disk". Link to comment Share on other sites More sharing options...
Tripredacus Posted November 5, 2015 Share Posted November 5, 2015 OK do this next and past output. sel disk 1detail disksel part 1detail partsel part 2detail partsel part 3detail part Have you tried right-click on each of the 3 partitions in Disk Management to see if you can assign a letter? You can even try it manually in Diskpart, example: sel disk 1sel part 3assign Were these disks in a RAID array in your NAS? Link to comment Share on other sites More sharing options...
AmazingGecko Posted November 5, 2015 Author Share Posted November 5, 2015 Yes, they were RAID 1 I think Link to comment Share on other sites More sharing options...
AmazingGecko Posted November 5, 2015 Author Share Posted November 5, 2015 Microsoft Windows [Version 10.0.10240]© 2015 Microsoft Corporation. All rights reserved.C:\WINDOWS\system32>diskpartMicrosoft DiskPart version 10.0.10240Copyright © 1999-2013 Microsoft Corporation.On computer: THOR-PCDISKPART> sel disk 1Disk 1 is now the selected disk.DISKPART> detail diskWDC WD20EARX-00PASB0 ATA DeviceDisk ID: 0004EE1CType : ATAStatus : OnlinePath : 1Target : 0LUN ID : 0Location Path : ACPI(_SB_)#ACPI(PCI0)#ACPI(SAT0)#ACPI(CHN1)#ATA(C01T00L00)Current Read-only State : NoRead-only : NoBoot Disk : NoPagefile Disk : NoHibernation File Disk : NoCrashdump Disk : NoClustered Disk : NoThere are no volumes.DISKPART> sel part 1Partition 1 is now the selected partition.DISKPART> detail partPartition 1Type : FDHidden: YesActive: NoOffset in Bytes: 131072There is no volume associated with this partition.DISKPART> sel part 2Partition 2 is now the selected partition.DISKPART> detail partPartition 2Type : FDHidden: YesActive: NoOffset in Bytes: 2550136832There is no volume associated with this partition.DISKPART> sel part 3Partition 3 is now the selected partition.DISKPART> detail partPartition 3Type : FDHidden: YesActive: NoOffset in Bytes: 4831838208There is no volume associated with this partition.DISKPART> sel disk 1Disk 1 is now the selected disk.DISKPART> sel part 3Partition 3 is now the selected partition.DISKPART> assignThere is no volume specified.Please select a volume and try again.DISKPART> Link to comment Share on other sites More sharing options...
AmazingGecko Posted November 5, 2015 Author Share Posted November 5, 2015 Think I may have found the solution to this one. It turns out Synology use EXT4 file system hence the problem with reading the drives. I'm going to install Paragon ExtFS for Windows. Will post back my results. Link to comment Share on other sites More sharing options...
AmazingGecko Posted November 5, 2015 Author Share Posted November 5, 2015 Just read some negative reviews on that software so scrapped that idea. If I can't be confident in the driver then I'll stick the drives back in the old NAS and do it that way. Thanks for your assistance. James Link to comment Share on other sites More sharing options...
submix8c Posted November 5, 2015 Share Posted November 5, 2015 (edited) Also see this if the silly thing uses EXTn -http://www.ext2fsd.com/Your NAS has Linux??? Even so, shouldn't it handle Windows partitions as well? NOTE! The above is ongoing development and does EXT2/3/4. (SorceForge project) HTH Edited November 5, 2015 by submix8c Link to comment Share on other sites More sharing options...
AmazingGecko Posted November 5, 2015 Author Share Posted November 5, 2015 Your NAS has Linux??? Even so, shouldn't it handle Windows partitions as well?Well, I think that was bourne out by my original issue - Windows sees the partitions and their properties but can't read the file system therein. It can't even assign a drive label. Anyway, I did look at that open source project earlier. It looks like it's in continual development and not a full release and as I'm paranoid about losing my data I think I'm just going to put the drives back into the original NAS unit which I still have fortunately. Why isn't life ever simple?!? Link to comment Share on other sites More sharing options...
Tripredacus Posted November 5, 2015 Share Posted November 5, 2015 The partition detail tells us what state they are in. All 3 are marked hidden, with MBR type FDh/0xFD. 0xFD for raid autodetect arrayshttps://raid.wiki.kernel.org/index.php/Partition_Types This is the main reason why you can't see the contents from within Windows. Your common Windows partition (such as your C drive) is MBR type 07h. You can change this with Diskpart, however I do not know how safe that is. Linux RAID superblock with auto-detecthttps://en.wikipedia.org/wiki/Partition_type This wiki page says that FreeDOS may be able to read these partitions. Link to comment Share on other sites More sharing options...
jaclaz Posted November 6, 2015 Share Posted November 6, 2015 Actually here there are 2 (two) concurrent issues:#1 a set of disks originally set in RAID 1 through a dedicated hardware (the Synology NAS) may have unmountable/invalid (under Windows) Partiion ID's (such as the mentioned FD's)#2 the filesystem used may have not an available filesystem driver in Windows (as it is probably but not definitely an Ext2/3/4) Point is that you do not really-really need to mount the volume(s) at all, what you actually need is to access (Read Only) the files/folders you discovered missing from the new disks. To do this you can try using a "recovery" tool like DMDE:http://dmde.com/which should allow you to retrieve the files you are interested in without actually mounting the filesystem or installing any driver. jaclaz Link to comment Share on other sites More sharing options...
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