I have 3 SATA HDDs installed, 2 500GB and 1 320GB. Recently I noticed that the 320 GB drive was no longer being recognized. As I no longer use it it wasn't a big deal but then I began having boot problems where I would get errors telling me that sdc (320GB) couldn't be found and boot times were averaging 5 minutes or longer and sometimes I would have to use CTRL-ALT-DEL to re-boot several times before I could use my system. Sometimes I would get a GRUB error 15, sometimes I would get GRUB 1.5 not found, sometimes error 21. Today I decided to see if I could resolve the problem by simply disconnecting the drive from the mother board. When I tried booting up again I got error 21 and no matter how many times I tried booting I could not boot. Finally I used my Live CD which I had created a few weeks ago and discovered that I was only able to see one drive at a time even though both 500GB drives were installed. Using My Live CD I re-installed PCLOS but still only one drive at a time. Switching data cables didn't help either. No matter which port(s) I plug the drives into only one is recognized. Previously when I could "see" the 320GB drive I tried using the partition manager but couldn't change the partitions in any way including formatting it. Now I am unable to even boot the system using my boot drive even after redo-mbr. Perhaps this is too complex for one topic? Here is my menu.lst:
color black/cyan yellow/cyan
kernel (hd1,0)/boot/vmlinuz BOOT_IMAGE=linux root=UUID=493d8524-6431-4a13-bfc6-68a00381a5ce vmalloc=256M splash=silent vga=788
kernel (hd1,0)/boot/vmlinuz BOOT_IMAGE=linux-nonfb root=UUID=493d8524-6431-4a13-bfc6-68a00381a5ce vmalloc=256M
kernel (hd1,0)/boot/vmlinuz-18.104.22.168-pclos1.a64 BOOT_IMAGE=22.214.171.124-pclos1.a64 root=UUID=493d8524-6431-4a13-bfc6-68a00381a5ce vmalloc=256M splash=silent vga=788
kernel (hd1,0)/boot/vmlinuz BOOT_IMAGE=failsafe root=UUID=493d8524-6431-4a13-bfc6-68a00381a5ce failsafe vmalloc=256M
Is part or all of my problem a faulty motherboard? Thanks in advance for any help.