I 'm having a problem in the Beta Release of Windows 7 Ultimate 64-bit version where some of the volumes on a RAID 5 array write-protect themselves. I'm running AMD/ATI AHCI so maybe it has something to do with that...IDK. My volumes appear to write-protect themselves after a reboot only, not after a wake up event and not randomly while the computer is running. I've been using the 'diskpart' command to clear the write-protect on the volume(s) but it's not a fix. BitLocker Drive Encryption has never been turned on for any of the drives. System Information: OS Name Microsoft Windows 7 Ultimate Version 6.1.7077 Build 7077 Other OS Description Not Available OS Manufacturer Microsoft Corporation System Manufacturer Gigabyte Technology Co., Ltd. System Model GA-MA770-UD3 System Type x64-based PC Processor AMD Athlon(tm) 7750 Dual-Core Processor, 2700 Mhz, 2 Core(s), 2 Logical Processor(s) BIOS Version/Date Award Software International, Inc. F5, 3/25/2009 SMBIOS Version 2.4 Windows Directory C:\Windows System Directory C:\Windows\system32 Boot Device \Device\HarddiskVolume1 Locale United States Hardware Abstraction Layer Version = "6.1.7077.0" Time Zone Eastern Daylight Time Installed Physical Memory (RAM) 4.00 GB Total Physical Memory 4.00 GB Available Physical Memory 2.53 GB Total Virtual Memory 7.99 GB Available Virtual Memory 5.75 GB Page File Space 4.00 GB Page File C:\pagefile.sys Disk Information: Description Disk drive Manufacturer (Standard disk drives) Model Promise 3 Disk RAID5 SCSI Disk Device Bytes/Sector 512 Media Loaded Yes Media Type Fixed hard disk Partitions 3 SCSI Bus 0 SCSI Logical Unit 0 SCSI Port 6 SCSI Target ID 0 Sectors/Track 63 Size 465.64 GB (499,981,870,080 bytes) Total Cylinders 60,786 Total Sectors 976,527,090 Total Tracks 15,500,430 Tracks/Cylinder 255 Partition Disk #1, Partition #0 Partition Size 195.31 GB (209,708,908,544 bytes) Partition Starting Offset 1,048,576 bytes Partition Disk #1, Partition #1 Partition Size 195.31 GB (209,711,005,696 bytes) Partition Starting Offset 209,711,005,696 bytes Partition Disk #1, Partition #2 Partition Size 75.03 GB (80,558,392,320 bytes) Partition Starting Offset 419,423,477,760 bytes SCSI Information: Name Windows Promise RAID Console SCSI Processor Device Manufacturer Promise Technology Status OK PNP Device ID SCSI\PROCESSOR&VEN_PROMISE&PROD_RAID_CONSOLE&REV_1.00\5&20674606&1&000800 Name Windows Promise FastTrak TX4310 (tm) Controller (x64) Manufacturer Promise Technology Status OK PNP Device ID PCI\VEN_105A&DEV_3515&SUBSYS_3515105A&REV_02\4&35E69562&0&38A4 I/O Port 0x0000CF00-0x0000CF7F I/O Port 0x0000CC00-0x0000CCFF Memory Address 0xFDDFF000-0xFDDFFFFF Memory Address 0xFDDC0000-0xFDDDFFFF IRQ Channel IRQ 21 Driver c:\windows\system32\drivers\fttxr5_o.sys (2.6.1.326, 225.01 KB (230,408 bytes), 4/6/2009 1:38 AM) IDE Information: Name Standard AHCI 1.0 Serial ATA Controller Manufacturer Standard AHCI 1.0 Serial ATA Controller Status OK PNP Device ID PCI\VEN_1002&DEV_4391&SUBSYS_B0021458&REV_00\3&18D45AA6&0&88 I/O Port 0x0000FF00-0x0000FF07 I/O Port 0x0000FE00-0x0000FE03 I/O Port 0x0000FD00-0x0000FD07 I/O Port 0x0000FC00-0x0000FC03 I/O Port 0x0000FB00-0x0000FB0F Memory Address 0xFE02F000-0xFE02F3FF IRQ Channel IRQ 22 Driver c:\windows\system32\drivers\msahci.sys (6.1.7077.0, 29.58 KB (30,288 bytes), 4/4/2009 8:00 PM)

Thanks. After the Release Candidate is final, and in public distribution, discussing bugs will no longer be NDA. This forum is only including comment on build 7000 so far.Rating posts helps other users Mark L. Ferguson MS-MVP