All Hard Drive Assignments and Permissions Deleted
I searched and reviewed various Windows 7 Permission submissions in this forum and I have found no solution for my Win7 bug! The forums suggest that the errors are caused by the UAC settings. I am sure this corruption is happening with UAC disabled and UAC set at the normal default. When the error occurs all of the Volume Names and Assignments are erased, the Hard Drives and/or Volumes are listed as Local Disks and the Drive Assignments assume the BIOS MS-DOS defaults and all Permissions and Ownership is cleared to blank and the Drive/Volumes access is not allowed until you take Ownership, then you can reset Permissions! Desktop Shortcuts to the OPS Folders will open up these System Folders OK, but no other access is granted! The Win7 OPS will reboot, but no startup application programs will load and run! Other than System Folder access, no other access is granted until you take Ownership. This error is applied to all Drives/Volumes in the computer and dual systems will not boot they are corrupted also! Some History: This Corruption did not occur in all the Windows 7 Builds 7000 thru 7077. This corruption error started just on one of my 3 machines that are testing Windows 7 Build 7100 and has happened 4 times now on this one computer. I restructured my two 750GB hard drives after the second failure as listed below and preformed a clean install of Windows 7 RC Build 7100 again and I have had 2 more failures since then. The bug wipes out all Partitions when it happens and the only clean recovery is an Image Restore or a Clean Reinstall! (Thank Goodness for Windows Home Server Backups If you are not running one You Should Be!) It didnt help resizing the Win7 System Partition, because the error wipes out all Drives and Image Restore/Recovery has to be run across all drives that were in the affected computer system! Affected System: Desktop Custom Mini-Tower Computer with: Logisys 450 watt Power Supply MSI 945P Neo #MS-7176 Mother Board w/ ver 12.3 BIOS Intel Pentium D 940 3.2 GHZ Processor 2 GB dual DDR2 Memory MSI R3450 TD256H Video Card 2 x 750 GB SATA Segate Hard Drives Partitions: Drive 1 - C:\Win7 System 200GB, D:\Data 500GB, Reserved Boot Partition 100MB Drive 2 - E:\WinXPPro and Data 750GB Light On DVD-Burner and a DVD-Rom Optical Drives Logitech USB Wave Keyboard/Laser Mouse Combo thru a Rosewill RKV-2U KVM Switch Windows 7 RC Build 7100 OPS with All Updates Balanced Power Settings (System Default) Windows 7 is GREAT!Computers have been my business for 55 years now! Regards - - - ShortoRegards - - - Shorto
June 24th, 2009 1:12am

I had a very similar situation. I tracked it down to "homegroups" I won't do that again. Networking is fine, just don't use homegroups. GD
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June 24th, 2009 2:40am

Hi GypsyDAVID After installing Win 7 RC Build 7100, I couldn't get HomeGroups to configure across the LAN Network. So I am not using HomeGroups, I have setup Volume Sharing instead and Share WinXp and Win7 across a LAN of 6 Machines. Thank You Very Much, but I don't think HomeGroups are causing the corruotion problem! Also RC Build 7100 won't let me Network Share a Remote HP Printer that worked OK on the Win 7 Beta Build 7000. - Thanks - - - Shorto
June 24th, 2009 5:53am

Shorto - Do you have ALL updates downloaded and installed from Windows Update? There's one particular issue that affects the 32 bit Windows RC specifically. Details can be found here.
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June 24th, 2009 3:54pm

Wolfie - All of the systems that I am currentlytesting is the Windows 7 RC x64 Bit Build 7100 OPS. I don't think the 32 bit issue applies to the 64 bit OPS. I am just holding my breath, hopeing my other test systems do not develope the Volume Corruption Wipeout untill a Fix is Found! And Yes I have downloaded and installed all of the current updates. - - - Shorto
June 24th, 2009 4:47pm

Hello Windows 7 Software Support Team Is anyone on the team monitoring these Forums?The Silence is Deafening - Just a Status Report on this Permissions Bug with Build 7100 would be Appreciated Very Much!If it's not fixed in the RTM then Microsoft is in for Real Trouble! I located another Thread on this Permissions Issue located Here that may help you also.Thanks - - - Shorto
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June 25th, 2009 5:00pm

Hi,There seems indeed to be a bug with UAC which becomes apparent after a home group is either created or deleted. Administrative privileges are lost - not able to use mmc / regedit or any of the system services. Some users state that C:\ permissions are restricted and while Win 7 loads one cannot access folders other than their documents and user files.The workaround seems to be to disable UAC by logging in in safe mode as an administrator. In regedit setting EnableLUA=0. While access to the C:\ drive is restored re-enabling the UAC causes one to lose administrative privileges once again. Could someone tell me where to post this bug.Jacob
June 28th, 2009 6:27am

john - Posting it here (as you've already done) is a good start. You might also want to post it again to the Have Comments about Windows 7 RC (Part 5).
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June 28th, 2009 9:36am

I too have been trying to find out about permissions. My Windows 7 RC (build 7100) has quite different settings for permissions on C and D -- could someone please tell me what the settings SHOULD be for each of the different users? I know how to change them, just not what they should be!!This is an upgraded install, from Vista SP1 32 bit to W7 RC 32-bit.Thanks!Cheers, Dallas Cheers, Dallas
July 9th, 2009 7:15pm

DrDCa This Bug that Corrupts the Permissions and/or Volume Assignments is a disaster for the systems it happens to infect.On my systems that I am testing the Windows 7 RC OPS on, I have disabled all Homegroups and set the UAC to "Never notify" andit seemsthat these settingskeeps the Corruption Bug from rearing it's ugly head! I have had no problems for over two weeks now! I do not know all of the default Permissions settings for the Volumes, Folders, and Files; and reseting all of them manually would be very time consumming job. From an AdministratorAccount you could add the Everyone Group Name to the Volumes and Set the Permissions= to Allow Full Control,then you can access everything. But this will leave your SystemWide Open to Anybody. If you have a good Image backup,then youshould do an Image Restore to resetthe permissions back. Otherwise IMO, I would run the Windows Easy Transferfeature to Save a Copy of all your current settings and selected files on the Extra Internal Drive (D:)? or an External Hard Drive in case you loose everything. Then I would Boot to the Windows 7 RC Original .ISO DVD and try to do an Upgrade on the OPS and that would do a Repair of the OPS without loosing installed prograns or settings. If that didn't work then you would be forced to do a Clean Install, then you will have to reinstall all of your 3rd party programs and then run the Windows Easy Transfer program to restore your personal settings and saved files. As for the D: Drive - It depends what is on it! - - - Lots of Luck - Shorto
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July 9th, 2009 9:20pm

Looks like I've run into the nasty bug with RTM now as well. All of the permissions and owner settings were wiped on my main drive. I tried manually setting them back, but it looks like when I install new apps they are being installed with no permissions. It looks like at this point I may just have to do a full reinstall. Has there been any info from Microsoft re: this bug?
September 14th, 2009 9:09pm

@mrhectorReal sorry to hear that this Bug still is rearing its ugly head in the RTM release! I have installed Windows 7 RTM 64or 32 Bit versions in all of my familys computers except for one still running Windows XP Pro andthis Corruption Bug hasn't "Bit Me Yet" while running the RTM Release Versions!. A Homegroup is set upacross the LAN and all are running with the default UAC settingwith no problems so far! I was hoping that the Software Development Team had found the cause of this Bug and fixed it by now! I have 2 versions of the Retail Releases on order and I hope the bug is fixed in the final releases. My recommendation is to keep current Drive Image Backups so the drives can be recovered if they are corrupted.I recommend aWindows Home Server for Backups and in my opinion is the best answer to nightly backupsfor all computers on the LAN, and the WHS has "Saved My Bacon" many times! - - - Shorto
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September 22nd, 2009 6:12pm

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