Seagate ST9420AG specification

Marathon 420sl Installation Guide, August 1995	15

∙Check the power supply.

∙Reboot the computer and make sure the drive spins up.

∙Verify the BIOS drive type.

∙Check for I/O address conflicts.

During high-level formatting, the drive keeps finding hard errors and reporting the following message: “Attempting to recover allocation units. . .”

∙This is normal with some versions of DOS. The drive will format normally. However, after formatting the drive, you may want to run a third-party surface-scan program to check for bad sectors.

During high-level formatting, the drive does not format to full usable capacity.

∙Verify the BIOS drive type. Your drive’s formatted capacity is limited to the capacity of the BIOS geometry you selected. If your BIOS does not offer a geometry that takes advantage of the full capacity of the drive, and a user-defined drive type is not available, use a third-party partitioning utility.

∙Run FDISK again and make the partitions smaller. Make sure you are using MS-DOS version 5.0 or later or equivalent.

At startup, the messages, “Disk Boot Failure,” “Non-System Disk,” or “No ROM Basic - SYSTEM HALTED,” appear.

∙Run the FDISK program and make sure the primary partition is marked active.

∙Check all cables.

∙Check your DOS version.

∙Reinstall the DOS system files onto the hard disc using the SYS command (see your DOS manual).