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Operating System Specific Discussions => Other Operating Systems => Topic started by: trekiej on August 28, 2013, 10:52:35 PM

Title: Fdisk
Post by: trekiej on August 28, 2013, 10:52:35 PM

Hello.
I am working on a 286.
I boot it with MSDos 6.22 in drive A:, which is a 1.44 MB drive.
I set the CHS of the drive and then reboot to A:\
I fdisk the hdd and use fdisk to partition it and reboot again.
When I go to format it, it acts as though it does not exist.
I tried diff. ps, controller card, and hdd , etc.
I also pulled the board and used a diff. ps.
The drive works in a 486.
size: 0 < X < 125 MB
Thanks.

Title: Re: Fdisk
Post by: mrknight on August 28, 2013, 11:53:45 PM

So what happens after reboot and you type "format c:"? Because I assume that is what you are doing?
Have you also tried to just create one small primary partition (<20MiB) on the HDD and tried to format that one?

Title: Re: Fdisk
Post by: Gulliver on August 29, 2013, 12:56:37 AM

I suggest you try a DOS bootdisk from http://www.bootdisk.com
...and see if that does the trick.

Title: Re: Fdisk
Post by: trekiej on August 29, 2013, 01:19:08 AM

When I do a format c: /s /u it gives me an "invalid drive specification".
When I do an fdisk again, it acts as though I have not fdisked it.
I have used a new boot disk.

Title: Re: Fdisk
Post by: paul1981 on August 29, 2013, 09:36:25 PM

Quote from: trekiej;746516

Hello.
I am working on a 286.
I boot it with MSDos 6.22 in drive A:, which is a 1.44 MB drive.
I set the CHS of the drive and then reboot to A:\
I fdisk the hdd and use fdisk to partition it and reboot again.
When I go to format it, it acts as though it does not exist.
I tried diff. ps, controller card, and hdd , etc.
I also pulled the board and used a diff. ps.
The drive works in a 486.
size: 0 < X < 125 MB
Thanks.

What happens if you prep the drive on the 486...can your 286 read it?

Title: Re: Fdisk
Post by: trekiej on August 29, 2013, 11:31:00 PM

It is fine on a 486.

Title: Re: Fdisk
Post by: fishy_fiz on August 30, 2013, 12:30:04 AM

As Paul1981 suggested, try preparing/formating the disk on the 486. If this works and then the same disk doesnt work on the 286 then it could be the ide controller.

Using a drive prepared on a 64bit system (even using 32bit) wont often work on a 32bit system though, so the above may not be foolproof if the same applies to 32/16bit.

Have you tried a system and or quick format, or just unconditional? Mightnt hurt to experiment.

Title: Re: Fdisk
Post by: trekiej on August 31, 2013, 02:45:53 AM

We put the board to the side for now.
Using the 486 crossed my mind but was pressed for time.
Thanks.
Also is there a 16 bit isa card that can tell me what Interrupts are being used.
I do not have the docs. for these cards and I do not have immediate access to the Internet.

Title: Re: Fdisk
Post by: lost_loven on August 31, 2013, 03:41:32 AM

been along time but do you have to set a active partition after deleting and setting up a partition in fdisk? Then save and exit and restart?

lost

Title: Re: Fdisk
Post by: trekiej on August 31, 2013, 03:58:17 AM

Fdisk asks if you want to use the full amount and make active.
You will have to if you do not the automatic method.