General failure reading drive
Microsoft MS-DOS
Severity: CriticalWhat Does This Error Mean?
General failure reading drive means DOS cannot read any data from the specified drive. This is more severe than a single bad sector — DOS cannot communicate with the drive at all. The disk may be unformatted, the wrong format, or physically damaged.
Affected Models
- MS-DOS 3.x
- MS-DOS 4.x
- MS-DOS 5.x
- MS-DOS 6.x
- PC-DOS
- FreeDOS
- DOSBox
Common Causes
- Floppy disk is unformatted or formatted for a different system (e.g. Amiga or Mac disk in a PC)
- Floppy disk is physically damaged or has a corrupted file system
- Drive door not fully closed (5.25-inch drives)
- Drive head dirty or misaligned
- Attempting to read a CD-ROM drive without a CD-ROM driver loaded
How to Fix It
-
Press R for Retry first — sometimes a second attempt succeeds.
Floppy drives occasionally fail to read on the first try, especially with old disks. Retrying two or three times can work if the issue is marginal.
-
Check that the disk is inserted properly and the drive door is closed.
On 5.25-inch drives, the latch must be down to grip the disk. On 3.5-inch drives, make sure the disk clicks fully into place.
-
Try a different floppy disk to rule out drive problems.
If a known good disk also fails, the drive itself may be faulty or dirty. If only one disk fails, that disk is likely damaged or formatted for a different system.
-
If the disk is unformatted, use FORMAT A: to format it (WARNING: this erases all data).
FORMAT A: prepares a blank disk for use with DOS. Never format a disk that might contain data you need — there is no undo.
-
Clean the drive head with a head-cleaning disk kit.
Oxide from old disks builds up on the read/write head over time. A cleaning disk with isopropyl alcohol restores reliable reading.
Frequently Asked Questions
What is the difference between General failure and Abort, Retry, Fail?
Abort, Retry, Fail appears for many types of disk errors and is often recoverable with Retry. General failure means DOS has completely failed to communicate with the drive — it is a more severe error that Retry is less likely to fix.
Can I recover data from a disk that shows General failure?
Sometimes. If the disk is physically intact, specialised tools like Norton Disk Doctor or SpinRite can attempt to read sectors directly. But if the magnetic surface is damaged, the data may be permanently lost.