Jon Tydda
jon at tydda.plus.com
Thu Apr 10 15:01:20 CDT 2008
Might sound silly, but have you checked the battery on the motherboard? Jon -----Original Message----- From: dba-tech-bounces at databaseadvisors.com [mailto:dba-tech-bounces at databaseadvisors.com] On Behalf Of Helmut Kotsch Sent: 10 April 2008 20:35 To: Discussion of Hardware and Software issues Subject: Re: [dba-Tech] Operating system not found Lembit, I had the same problem some time ago. Assuming that you have an AMI BIOS the solution was as follows: + Enter the BIOS setup during Boot with F2 Go to menu "BOOT" + Go to the submenu "Hard Disk Drives" and hit Enter Here you can see + which of your drives the BIOS sees as your 1st, 2nd or 3rd Drive. + BIOS will always select the 1st Drive to BOOT. + Make sure that the 1st Drive is the one you want to boot from. The selection menu shows prefixes like HDD: PM-xxxxxxx (Primary Master) or HDD:PS-xxxxxxx (Primary Slave) + My problem was, that the BIOS for whatever reasons swapped the + sequence of these drives when playing with the boot device. I have not figured out why this happened but could reproduce the problem. + After getting this straightened out and having the first Boot device + set to HDD the problem was fixed. Summary: In addition to seeing the disks during BOOT, and having set the 1st Boot Device to HDD you also have to make sure that the sequence of your hard disks is set to make the desired one as the first Drive. Helmut -----Ursprungliche Nachricht----- Von: dba-tech-bounces at databaseadvisors.com [mailto:dba-tech-bounces at databaseadvisors.com]Im Auftrag von Lembit Soobik Gesendet: Donnerstag, 10. April 2008 19:34 An: Discussion of Hardware and Software issues Betreff: [dba-Tech] Operating system not found I've got a PC with real puzzling behaviour: suddenly it tells me at boot time: Operating system not found. Now this would indicate that either the HD is gone bad or disconnected,but: The BIOS shows the HD is there. then I started it with ACRONIS True Image. Acronis shows the disk and contents and lets me do an image to a differnt PC, no problem here. So I took a different HD from another PC which has WinXP on it. Same problem - Operating system not found. Yes I tried a different cable - nothing. So I took an old HD, connected it instead of the original and started to install winXP on that. What happened: It recognized the HD, let me erase it, make a partition, format it and copied the files and initialized configuration. Then it has to restart.... instead of continuing the installation, it started over. That means, it did not see the HD at boot time (although BIOS does show it). now I started the WinXP install again, and when it did the restart, I took the WinXP CD out. Here it should have asked for the CD, but it told me Operating System NOT FOUND again. So, it can read and write to the disk, but it won't recognise any OS. now I hooked the disk up to IDE2 - this is where it recognized the Acronis disk as well as the WinXP disk, but NO, it does not find the OS there either, although BIOS sees the HD. to complete the tests I have now connected the CD drive to IDE1 and found, I can run Acronis fine. so the problem is, it will not recognize an OS on a HD, but it will run from a CD, no matter whether on IDE1 or 2. Does anybody have an idea? or do I have to replace the MB? any suggestions welcome thanks Lembit _______________________________________________ dba-Tech mailing list dba-Tech at databaseadvisors.com http://databaseadvisors.com/mailman/listinfo/dba-tech Website: http://www.databaseadvisors.com _______________________________________________ dba-Tech mailing list dba-Tech at databaseadvisors.com http://databaseadvisors.com/mailman/listinfo/dba-tech Website: http://www.databaseadvisors.com