To find out which component is at fault, move the data cables back to the machines they originally came out of so that each computer uses its original disk controller and Low End Mac, LowEndMac, and lowendmac.com are trademarks of Cobweb Publishing Inc. Apple implemented this in early Macintosh computers by spinning the disk more slowly when the head was at the edge, while maintaining the data rate, allowing 400 KB of storage per PROBABLE CAUSE DIAGNOSIS SOLUTION Keyboard is locked. http://vgvinc.com/floppy-disk/floppy-disk-error-40.php
And really, do try removing the sound card and making sure it works without it, and if it doesn't then you know it's your floppy and not your sound card. Opinions expressed are those of their authors and may not reflect the opinion of Cobweb Publishing. Retrieved 2011-06-22. ^ "Chronology of Events in the History of Microcomputers − 1981–1983 Business Takes Over". Unlock keyboard || TOP || || WebHQ News || World News || Manuals || Search || Bios info || Manufacturers || Most Wanted || || Testing Tips || Diagnostic Tools http://www.computerhope.com/issues/ch000277.htm
If you're trying to read 1.4 MB disk in a Plus, unupgraded Mac II, or early SE, that could be the problem. Verify that other floppy diskettes are not exhibiting the same issue. Networking, advancements in flash-based devices and widespread adoption of USB provided another alternative that in turn made both floppy disks and optical storage obsolete for some purposes. This may not be replaced due to cost or requirement for continuous availability; existing software emulation and virtualization do not solve this problem because no operating system is present or a
San Antonio College. Defective expansion card. Screen goes blank periodically. Floppy Drive Not Working Macs with HD drives can read and write IBM floppies, but only if PC Exchange, DOS Mounter, or a similar program is installed.
Industrial automation equipment such as programmable machinery and industrial robots may not have a USB interface; data and programs are then loaded from disks, damageable in industrial environments. These problems are called configuration problems, or setup problems. But that's only in Macs with HD floppies - you can't use IBM format disks in 800k drives. The first Macintosh computers used single-sided 3½-inch floppy disks, but with 400 KB formatted capacity.
All or part of the system may be inoperable. Floppy Disk Drive Problems If you suspect the problem is as severe as these, it’s best to go ahead and replace the drive.Should the floppy go the way of the Dodo? The most common capacity of the 5¼-inch format in DOS-based PCs was 360 KB and in 1984 IBM introduced the 1.2 MB dual-sided floppy disk along with its PC-AT model. If the disk works in a different drive, begin by checking for obvious problems.
A more space-efficient technique would be to increase the number of sectors per track toward the outer edge of the disk, from 18 to 30 for instance, thereby keeping nearly constant http://lowendmac.com/trouble/floppy.shtml The FDD is using the usually IRQ and DMA. The Disk Media Is Not Recognized Floppy Power cable and wall socket are OK, but system is still dead. Floppy Disk Problems And Solutions A few years later Apple started shipping high-density floppies (called FDHD or SuperDrives).
The general rule of thumb is that the information on the site is displayed in the "Contents" frame, called "C", while the links deeper into the structure are in the "Index" navigate here If the boot sequence starts with the letter of a hard disk drive (like C:), and that drive is having a problem, the system will never even attempt to boot from Run the FDISK program, format the hard drive(See HARD DRIVE section of manual). Another LED/photo-transistor pair located near the center of the disk detects the index hole once per rotation in the magnetic disk; it is used to detect the angular start of each Floppy Disk Format Error
It is also possible to format a disk at a lower density than it was intended for, but only if the disk is first thoroughly demagnetized with a bulk eraser, as For price quotes and advertising information, please contact at BackBeat Media (646-546-5194). Areas of the disk unusable for storage due to flaws can be locked (marked as "bad sectors") so that the operating system does not attempt to use them. http://vgvinc.com/floppy-disk/floppy-disk-error-help.php Ensure microprocessor, memory modules, and adapters such as video card are inserted correctly and didn't "pop-up" due to vibration.
Sizes Main articles: Floppy disk format and List of floppy disk formats Different sizes of floppy disks are mechanically incompatible, and disks can fit only one size of drive. Floppy Disk Not Recognized All Hard Disks are capable of breaking down at any time. The error messages described in Table 3.1 are errors that occur and are reported before the single beep tone is produced at the end of the POST routines.
A consortium of 21 companies eventually settled on a 3½-inch floppy disk (actually 90mm wide) a.k.a. Cannot boot system after installing second hard drive. repair: It comes down to timeSince it’s common to find floppy disk drives for less than 20 dollars—quite amazing for a component that cost hundreds of dollars just a few years Floppy Disk Driver Windows 7 Up to this point in the operation of the system, only the BIOS and the basic system hardware have been active.
Verify that the diskette is not write protected by sliding the tab into the position not allowing light to shine through it. Thanks. the cables are in snug. http://vgvinc.com/floppy-disk/floppy-disk-s-error-40.php Retrieved 2011-02-20. ^ "Formatting 720K Disks on a 1.44MB Floppy".