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Unlock a SCSI HDD

By Bill Bomar ·
I have two ST15150N 4.3GB SCSI HDD. Both were bought refurbed and came with Flexstar test sheets showing the drives passed all tests. The SCSI controller card finds the HDDs but IDs as SX15150N which Seagates says is an OEM mod. SCSI ID and termination are correct. When I try to verify the drives the card reports "Drive Not Ready". Attempt a low level format and drives show 0MB and reports error "00h 02h 04h". Device Manager in Win98 indicates both drives functioning normally but no drive letter assigned. FDISK cannot locate the drives so no option 5 is available. The drives showed up in Control Panel when I showed them as "removeable" and assigned a drive letter. Removed the "removeable" designation and drive letter stayed and drive properties showed a "local disk" with a FAT file structure and 0MB available. I have tried the drives individually, dasiy-chained, and on a RAID card. All results are the same. Am now using two other ST15150N is a RAID system w/o problems. Any ideas?

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Unlock a SCSI HDD

by kiwimagic In reply to Unlock a SCSI HDD

I don't have any SCSI equipment, or details of the HD and their error codes, so this is my approach.

I'm hoping that when you cold boot, part of the ROM routine includes the SCSI BIOS. I would look here, for settings and other, for diagnostics/identification of the HD's, starting with the "working" drives. Then with the unhappy rebuilds, looking for some discrepency.

Then look at the system board BIOS settings for the SCSI drives, in the same mannor as abouve. Rebooting with a non system floppy installed, will casue the boot prosses to stop, with (hopefully) details of detected hardware (HD's etc) on display.

If my help hasn't been usefull, sent me copies of the BIOS report.

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Unlock a SCSI HDD

by Bill Bomar In reply to Unlock a SCSI HDD

The controller bios setup displays the HDDs correctly as to model and SCSI ID. AMI Diagnostic shows all info of the drives correctly. Every indication is that the drives are fully workable yet they read 0 MB available. The drives are attached to thecontroller card and therefore do not appear in the system bios.

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Unlock a SCSI HDD

by kiwimagic In reply to Unlock a SCSI HDD

Hmmm, I have some more ideas.
1. The BIOS on the SCSI card, dose it use a cylinder/head/sector like access to the HD's? If so, this will have to be the same on the missbehaving drives.
2. Is there any diagnostice drive testing/config options in SCSI bios/Seagate software?
3. When low level formating (from SCSI card bios), it shows progress and activity, right? Any diference to that of the working drives?
4. The sheet that documents the drives tested good, serial numbers mach? What about thetest conditions etc.

I'm just as stumped as you, but maybe one of my crazy ideas may lead you in the right direction :-).

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Unlock a SCSI HDD

by Bill Bomar In reply to Unlock a SCSI HDD

1. Conroller card does not use cylinder, etc.
2. Have run all Seagate diagnostics that I could find. Since the drives won't report "Ready", diagnostics can't find them.
3. When attempting low level format (which won't complete), disc activity appears normal.
4. All test conditions were a standard Felxstar test procedure

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Unlock a SCSI HDD

by roberwel In reply to Unlock a SCSI HDD

Two questions: 1. Which scsi cards are you using?
2. Do you have the card set up to send a start command to the drives?
If #2 is no set it up in the card bios to send a start command to the drives. Disable the Delay motor start on the drives as well that usually causes problems.

Good Luck

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Unlock a SCSI HDD

by Bill Bomar In reply to Unlock a SCSI HDD

Not sure this will work but it is the first reoly from anyone that gices a plausible solution. I now have 4 of the ST15150N drives with the same behavior. No errors, proper SCSI ID, correct model and firmware, correct termination, yet 0MB available.Thanks, I'll try this. One card is an AMI Ultra 2 S466 Raid. The other is an Iwill 910U.

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Unlock a SCSI HDD

by Bill Bomar In reply to Unlock a SCSI HDD

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