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Pastimes : Dream Machine ( Build your own PC )

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To: Clarence Dodge who wrote (2802)10/15/1998 12:58:00 AM
From: Zeuspaul  Read Replies (2) of 14778
 
KOT on Removable Drive

The Quest to install NT and test the KOT concept in NT.

I want to free up a primary partition on an IDE drive to install NT. This requires deleting the active KOT partition on the second IDE harddrive. I had trouble with the copy process with Partition Magic so I tried Drive Image. Drive Image also gave me trouble. I created the Image file of the primary partition on the primary drive. I tried restoring it to the KOT drive but Drive Image reported that I had too many primary partitions on the drive and refused to make another one. Since I had already deleted one it doesn't make sense to me that it would not put one back in the same place.

Moral supports the latest thinking on KOT... ie using one primary active partition (perhaps a second hidden one) on the second drive in conjunction with Drive Image backups.

The NT KOT tests will require the use of two harddrives. I do not want to risk the existing working installations. I decided on trying to setup the MO drive as a KOT drive. I am now posting from the MO KOT drive.

This is what I did.

The drive is a 2 GB (two sided, ie 1 GB per side) SCSI MO drive. It is attached to an Adaptec AHA 2940 U2W SCSI host adapter.

I put a blank disk in the drive. After Windows 95 loaded, the Adaptec SCSI utility reported that there was an unformatted disc in the drive. It offered to format it for me. One option was to set it up as a boot disc...I said yes and the formatting went to completion.

First I tried cloning the IDE drive to the MO drive. The MO drive did not appear as an option in Partition Magic. Only FDD (Fixed Disk Drives) appeared as options. I then tried using Drive Image to make an image file and then restore it to the MO drive. Same problem.

Then I booted the machine and entered the Adaptec SCSI bios. I enabled an option to support removable drives as fixed drives. There are three options. One is to support removable drives as fixed drives on boot only. Two is to support removable drives as FDD all the time. Three is neither one or two.

This time when I executed Drive Image the MO drive was an option. I restored the image file of the primary IDE Win95 installation to the MO drive. Drive Image indicated to me that the restoration may result in a non bootable disc. I assumed it was overwriting the format that the Adaptec SCSI utility had created. The Drive Image restoration clones the format as well as the files of the source partition(s). I decided to proceed.

The restoration went to completion and the indicated that the system had to reboot for changes to take affect..ok, why not?.. go for the boot.

The machine booted from the IDE drive as it should as the IDE drive is selected in the mobo bios.

I then shut down and entered the mobo bios..I changed the boot sequence to SCSI before IDE. I allowed the boot process to continue and then entered the SCSI bios. (The two harddrives are ID 1, and ID 2. I had physically set the ID of the MO drive to ID 0.) I set the SCSI bios boot target to ID 0. This will boot the MO drive first, if it contains a disc. If the MO drive does not contain a disc the bios will search down the ID sequence and boot the harddrive with ID 1.

I allowed the boot process to continue and voila! it booted to the MO drive and is a clone of the primary Win95 installation on the primary IDE drive. It is a bit sluggish while loading programs due to the slower speed of the MO drive.

I now feel comfortable installing NT on the second IDE drive as the primary installation is protected by the MO KOT drive.

My guess is that the JAZ2 drive would work in a very similar way. (I read the JAZ2 manual and there is no reference that I could find to using it as a boot drive). I believe Sean indicated that it would work in a previous post. The JAZ2 drive would be faster and has greater capacity..(1.8x gig formatted).

I believe consideration should be given to using a JAZ2 drive in lieu of the tape/SparQ combination. I do not like crossing the controller platforms (IDE-SCSI) for the KOT drives so I would still recommend a pair of IDE drives for the base KOT implementation. (I am withdrawing the matched size comment).

Next step...Try to install NT on an IDE drive.

Zeuspaul

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