DOCUMENT:Q101626 25-AUG-1993 [W_NT] TITLE :INF: Windows NT Removable Media Requirements and Limitations PRODUCT :Windows NT PROD/VER:3.10 OPER/SYS:WINDOWS KEYWORDS: ---------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT operating system, version 3.1 - Microsoft Windows NT Advanced Server, version 3.1 ---------------------------------------------------------------------- Windows NT supports most removable hard disks and magnetic-optical disk drives. These disks are treated as hard disks because they must be partitioned and they are assigned a drive letter. However, Windows NT does not support write-once disk drives. Windows NT supports removable media subject to the following restrictions: - A removable hard disk can have only one primary partition. Extended or logical partitions are not supported. - Windows NT supports only the Windows NT filesystem (NTFS) and MS-DOS-compatible (FAT) filesystem on removable media. - The user cannot assign the drive letter for the device. - Removable disks are not supported in a fault tolerant manner. - You cannot install the system on a removable disk. - If the paging file is located on the device or if the device has the NTFS installed, the media is locked until the system is shutdown. - The FAT file system locks the media while it is in use and unlocks it after approximately 10 seconds of inactivity. NOTE: Windows NT supports a 20.8MB "floptical" disk as a floppy disk, not as a hard disk. Each write to a floppy disk is performed on a write-through cache basis and you can remove a floppy disk as long as the drive light is not on. Additional reference words: 3.10 iomega bernoulli KBCategory: KBSubcategory: FILSYS HRDWR ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1993.