Re: What determines hard disk number?
- From: "Lil' Dave" <spamyourself@xxxxxxxxx>
- Date: Sun, 3 Aug 2008 10:30:04 -0500
The hard disk number designation is determined by the bios. Many PCs have a
bios selection for boot order of hard drives. This can alter the hard disk
number designation if changed.
The "C:" drive designation is the first active partition found for booting
of the order of hard drive number designation. If hard drive zero has no
active, and primary partition, the bios will go to the next numerical
designation to seek a hard drive with an active, primary partition. This
info is held within each hard disk's master boot record. So such seek time
is minimal.
Older PCs, you had to either select the physical hard drive you want to boot
from in the bios by designation order. This was not a submenu in the bios
settings. Before that, you may have had to disable in the bios settings the
hard drive you normally boot from, in order to boot to another. In even
older situations, the hard drive intent from booting had to be on the
primary ide port. And in those cases, if you wanted to boot from an ide
card, you had to disable the primary ide port in the bios settings.
--
Dave
"Walter R." <wer25@xxxxxxxxxxx> wrote in message
news:e9K01rC9IHA.4108@xxxxxxxxxxxxxxxxxxxxxxx
I installed a new hard drive and used an Acronis Drive Image to clone my
old OS to the new drive. The new drive was recognized as Disk 0. This is a
320 GB SATA drive. I set up 3 partitions, including partition C: Active,
for Windows XP
Then I re-installed my other hard drive, which holds data only, in my
computer. This is an IDE drive.
What baffles me, is that Windows changed the SATA drive to disk 1, while
the old IDE drive was now disk 0.
So, the OS resides on C: of Disk 1, instead of on Disk 0.
The system works great, I am just used to seeing C: reside on Disk 0,
instead of Disk 1.
Can I, or should I, change the respective Disk numbers?
--
Walter
www.rationality.net
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- References:
- What determines hard disk number?
- From: Walter R.
- What determines hard disk number?
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