Shulou(Shulou.com)06/01 Report--

This article mainly introduces "how to solve the problem of" Missing operating system "when starting a computer. In daily operation, I believe many people have doubts about how to solve the problem of" Missing operating system "when starting a computer. The editor has consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for everyone to answer" how to solve the doubt of "Missing operating system" when starting a computer. Next, please follow the editor to study!

There are three possible causes of the "Missing operating system" error after the computer post:

1. There is a problem in the system boot area

two。 The computer was attacked by a virus.

3. There is a problem with the hard drive.

It is usually due to an error in the system boot record. The system boot record is located in the logical sector 0 and is generated by the advanced formatting command FORMAT. After checking that the partition table is correct, the master boot program reads the system boot record according to the starting address of the system partition indicated in the partition table. If the reading fails, it displays the error message of "Error loading operating system". If the system boot record can be read correctly, the master boot program will check whether the last two bytes of the system boot record are 55AA, and if not, give a prompt of "Missing operation system". In general, you can repair it with NDD. If it is not successful, you will have to rewrite the DOS boot record with the FORMAT Crane hand S command.

If the problem persists, it can be solved by reinstalling the system.

Specific operation steps:

1. Repartition with a partition disk is estimated to be a track 0 error, so the partition is divided into extended or hidden partitions first (there must be one), and the main partition is distinguished at the end, because track 0 can be booted and track 255 can also be booted.

2. You can use the system reply disk to enter the DOS program and copy the three files necessary to start the system: MSDOS.SYS,IO.SYS and COMMAND.COM:

Type copy MSDOS.SYS C:

Type copy IO.SYS C:

Type copy COMMAND.COM C

At this point, the study on how to solve the problem of "Missing operating system" on computer boot is over. I hope to be able to solve everyone's doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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