Ignore that last feeble attempt at sending email :-) Q. How can I check a system's availability? A. Microsoft's Uptime tool, which you can download at http://www.microsoft.com/ntserver/nts/downloads/management/uptime/default.asp , displays basic system-uptime information. This tool can also list all startup and shutdown events, and you can use the /s switch to show the total percent time that your machine has been available. For example, when I type D:\temp>uptime /s on my machine, the Uptime tool displays the following information: Uptime Report for: \\EAGLE01 Current OS: Microsoft Windows XP, Service Pack 1, Multiprocessor Free. Time Zone: GMT Standard Time System Events as of 07/11/2002 15:03:30: Date: Time: Event: Comment: ---------- ------- ----------------- --------------------------- 27/09/2002 10:54:46 Shutdown 27/09/2002 10:56:42 Boot Prior downtime:0d 0h:1m:56s 27/09/2002 13:21:54 Shutdown Prior uptime:0d 2h:25m:12s 27/09/2002 13:23:36 Boot Prior downtime:0d 0h:1m:42s 30/09/2002 08:46:37 Service Pack Service Pack 1 installed 30/09/2002 08:47:50 Shutdown Prior uptime:2d 19h:24m:14s 30/09/2002 08:52:57 Boot Prior downtime:0d 0h:5m:7s 01/10/2002 08:45:22 Shutdown Prior uptime:0d 23h:52m:25s 01/10/2002 08:50:30 Boot Prior downtime:0d 0h:5m:8s 02/10/2002 10:46:07 Shutdown Prior uptime:1d 1h:55m:37s 02/10/2002 10:48:38 Boot Prior downtime:0d 0h:2m:31s 03/10/2002 08:52:48 Shutdown Prior uptime:0d 22h:4m:10s 03/10/2002 08:58:31 Boot Prior downtime:0d 0h:5m:43s 04/10/2002 15:56:58 Shutdown Prior uptime:1d 6h:58m:27s 04/10/2002 16:02:47 Boot Prior downtime:0d 0h:5m:49s 07/10/2002 13:23:54 Shutdown Prior uptime:2d 21h:21m:7s 07/10/2002 13:25:46 Boot Prior downtime:0d 0h:1m:52s 10/10/2002 14:55:03 Shutdown Prior uptime:3d 1h:29m:17s 10/10/2002 15:01:13 Boot Prior downtime:0d 0h:6m:10s 11/10/2002 09:19:20 Shutdown Prior uptime:0d 18h:18m:7s 11/10/2002 09:21:08 Boot Prior downtime:0d 0h:1m:48s 28/10/2002 09:24:07 Shutdown Prior uptime:17d 1h:2m:59s 28/10/2002 09:26:48 Boot Prior downtime:0d 0h:2m:41s 07/11/2002 08:22:25 Shutdown Prior uptime:9d 22h:55m:37s 07/11/2002 08:24:18 Boot Prior downtime:0d 0h:1m:53s Current System Uptime: 0 day(s), 6 hour(s), 39 minute(s), 12 second(s) Estimate based on last boot record in the event log. See UPTIME /help for more detail. ----------------------------------------------------------------------- Since 27/09/2002: System Availability: 99.9287% Total Uptime: 41d 4h:26m:24s Total Downtime: 0d 0h:42m:20s Total Reboots: 12 Mean Time Between Reboots: 3.43 days Total Bluescreens: 0 Notice the final summary, which displays useful information such as the number of total reboots and the mean time between reboots. You can use the /d: switch to generate statistics from a certain date or use the /p: switch to generate the statistics for a certain number of days. The /help switch provides a description of all available options. -------------------- From Windows XP and 2000 Tips & Tricks UPDATE