# Replace Disk **URL:** \ **Category:** SCO\ **Created:** [September 22, 2010, 1:21pm UTC](https://community.unix.com/t/replace-disk/273881 "2010-09-22T13:21:42Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![jgt](https://community.unix.com/user_avatar/community.unix.com/jgt/32/10703_2.png) [@jgt](https://community.unix.com/u/jgt)\ **Post date:** [September 22, 2010, 1:21pm UTC](https://community.unix.com/t/replace-disk/273881/1 "2010-09-22T13:21:42Z")
Originally Posted by panos83 Hello there Sir, according to this old post, [http://www.unix.com/sco/100001-warni...ler-found.html](http://www.unix.com/sco/100001-warning-hd-no-root-disk-controler-found.html) i try to restore an old image to a new hard disk drive. The problem is that i don't have basic information such as: 1) Which btld driver do i need for my new hard drive? 2) Where to tell sco where the new drive actually is, according to the post above (ex. "root=ad320(0,0,0,0)" tell sco what the hard drive address is. controller #,bus #, disk id#, lun always 0) My hardware does not support floppy device due its nature plus the only available bootable media is my sco boot CD What should i do in order to correct the controller issue? Which commands and with what order to type them? Any help would be grateful Thanks Would you please create a new thread with your question in it, and also include the version of the OS and a brief description of the new hardware (cpu type, disk controller type, etc) ---------- Post updated at 12:57 PM ---------- Previous update was at 12:34 PM ---------- A new user without 5 posts cannot post a link in a thread... they can post threads without links. This is an anti-spam mechanism many forums have. ---------- Post updated at 01:21 PM ---------- Previous update was at 12:57 PM ---------- > [@](#): > > I still can't reply jgt. > > I got though the information you asked: > > Now, the OS is SCO OpenServer 5.0.7 > About the hardware, i still don't have the information about the controller, all i know is that the broken HD is a Toshiba MK2018GAS > (Toshiba MK2018GAS 20GB 2.5" Super Slimline 9.5mm Notebook Hard Drive (HDD2168)\) > > and the new HD is a WD1200B EVE > (Western Digital WD1200BEVE Specifications - Serial ATA Hard Drive, Hard Drive) > > I have an old image from the Toshiba. Now that Toshiba HD is broken, i restored the > image file to the new HD (Western Digital) and i get the errors bellow: > > warning:hd:noroot disk controler was found > hd:a boot-time loadable driver may be required > h i init > panic:srmount fan-error19 mounting rootdev(1/42) > error 19 opening dumpdev(1/41) > dump not completed > safe to power off > > The cpu is a PIII and i did't find any problems related to that. > > As a newbie to SCO i can't bypass this problem and map the OS to new disc > Forgive me for my bad English. > > Any help would be really grateful. > > Panos The new drive uses the same disk controller driver as the old one, however... There are two issues that you will have to deal with. The first is the CMOS settings for how SATA drives are to be treated. You must use legacy mode, so that the disk appears to be the primary master. Secondly, the disk geometry is different for the new drive. Use the biosgeom(cyl,heads,sectors) boot string to tell the kernel that the drive has a different number of cylinders heads and sectors. Use the native mode numbers, not LBA or LARGE. After you have booted, use the "dparam" command to permanently change these values. You said that the cpu is a P3. Are you using a non standard SATA controller? ---
**Author:** ![panos83](https://community.unix.com/letter_avatar/panos83/32/5_5575768a8748004e209b776fc1b2916d.png) [@panos83](https://community.unix.com/u/panos83)\ **Post date:** [September 22, 2010, 1:41pm UTC](https://community.unix.com/t/replace-disk/273881/2 "2010-09-22T13:41:25Z")
I got the information you asked: Now, the OS is SCO OpenServer 5.0.7 About the hardware, i still don't have the information about the controller, all i know is that the broken HD is a Toshiba MK2018GAS and the new HD is a WD1200B EVE I have an old image from the Toshiba. Now that Toshiba HD is broken, i restored the image file to the new HD (Western Digital) and i get the errors bellow: warning:hd:noroot disk controler was found hd:a boot-time loadable driver may be required h i init panic:srmount fan-error19 mounting rootdev(1/42) error 19 opening dumpdev(1/41) dump not completed safe to power off The cpu is a PIII and i did't find any problems related to that. As a newbie to SCO i can't bypass this problem and map the OS to new disc Forgive me for my bad English. Any help would be really grateful. Panos ---------- Post updated at 08:41 PM ---------- Previous update was at 08:21 PM ---------- The new drive uses the same disk controller driver as the old one, however... There are two issues that you will have to deal with. The first is the CMOS settings for how SATA drives are to be treated. You must use legacy mode, so that the disk appears to be the primary master. Secondly, the disk geometry is different for the new drive. Use the biosgeom(cyl,heads,sectors) boot string to tell the kernel that the drive has a different number of cylinders heads and sectors. Use the native mode numbers, not LBA or LARGE. After you have booted, use the "dparam" command to permanently change these values. You said that the cpu is a P3. Are you using a non standard SATA controller? As i understand and correct me if i a wrong, when you say CMOS settings do you refer through BIOS settings? Legacy mode has to be configured through the BIOS? ---
**Author:** ![jgt](https://community.unix.com/user_avatar/community.unix.com/jgt/32/10703_2.png) [@jgt](https://community.unix.com/u/jgt)\ **Post date:** [September 22, 2010, 1:53pm UTC](https://community.unix.com/t/replace-disk/273881/3 "2010-09-22T13:53:47Z")
> [@](#): > > As i understand and correct me if i a wrong, when you say CMOS settings do you > refer through BIOS settings? Legacy mode has to be configured through the BIOS? Yes that is the correct assumption. However, I am surprised that you have a P3 with this capability. 5.07 Will run on socket 478 and 775 P4 motherboards. ---
**Author:** ![panos83](https://community.unix.com/letter_avatar/panos83/32/5_5575768a8748004e209b776fc1b2916d.png) [@panos83](https://community.unix.com/u/panos83)\ **Post date:** [September 22, 2010, 2:00pm UTC](https://community.unix.com/t/replace-disk/273881/4 "2010-09-22T14:00:16Z")
I will try to unlock the bios at the moment and then i will post again how is it going Thank you very much jgt Panos