LinuxQuestions.org - /dev/sda (SATA) devices detected as /dev/hda Please help

Hi.

I have an issue with Hard Drives in GNU/Linux CentOS 5.3

I installed linux 5.3 frash copy to new SATA MAXTOR 1000GB Hdd.
And see the partitions is

Code:

SATA MAXTOR 1000GB (NEW INSTALLATION CentOS 5.3)



/dev/sda1 Boot

/dev/sda3 /



(/dev/sda2 is the SWAP)

Then pluged the old SATA HITACHI 500GB Hdd for backup files, etc.
NOTE: the HITACHI 500GB Hard drive cantains old linux installation files (CentOS 5.2 Upgrated to 5.3)

After loading linux I see the Partitions show as

Code:

SATA MAXTOR 1000GB (NEW INSTALLATION CentOS 5.3)



/dev/hda1

/dev/hda3



SATA HITACHI 50GB (OLD LINUX FILES Just Pluged)



/dev/hdc1

/dev/hdc2

etc..

instead of sda and/or sdb

And gmesg said .... timeout..{....} ... (Now i do not remember ...)

When reboot and unplug the 500GB Drive i get the /dev/sda, etc. (all partitions show as sda in new drive)

So what is the reason if the partitions show as hda when i plug another drive ?

P.S.

1) I Formated old drive
2) Removed grub from old drive
3) And Now no errors. But still the partitions show as /dev/hdaX when i plug the second hard drive.

Great Thanks !!!