It is simply not compatible with your current version or OS. Or it may be due to corrupt sectors in the drive making a read error and making it display that message.
the logical choices is:: MAY BE YOUR DISK IS DAMAGED; SYSTEM MALFUNCTION; AND INVALID HARD DRIVE
the boot loader is incorrectly confugured
The "invalid BSD file type" error when repairing a Mac disk typically indicates a corruption in the file system or an issue with the disk's partition structure. BSD (Berkeley Software Distribution) refers to the underlying file system used by macOS. This error can prevent the disk utility from properly accessing or repairing the disk, potentially requiring more advanced troubleshooting or data recovery methods if the disk is severely damaged. In some cases, reformatting the disk may be necessary, but this will erase all data.
- The computer displays an "Invalid Boot Disk" error after POST.- The computer displays a "Missing NTLDR" error after POST- The computer displays an "Invalid Boot Disk" error after POST- The computer displays a "Missing NTLDR" error after POST
If the computer thinks your C: drive is invalid, you need to reload the operating system. In those conditions the disk has become corrupted or the OS has been trashed by a virus. If you have a disk in either the floppy drive or the CD drive and the computer is trying to bootload from there, just remove the disk and it should boot ok.
While booting, a computer looks at a number of available disks (floppies, CDs, harddisks) to see if they contain a bootable operating system. Older PCs would always boot from the harddisk, unless a floppy was present, and if that floppy didn't contain an operating system (like DOS), it would give this error message so you could remove the floppy and the computer could go on booting from the harddisk.
"Invalid system disk" is an error message that typically indicates that the computer is unable to locate a valid operating system on the disk it is trying to boot from. This can occur due to various reasons, such as a corrupted operating system, a missing boot sector, or issues with the hard drive itself. It may also indicate that the BIOS is set to boot from a disk that does not contain a valid OS, or that there is a problem with the physical disk or connections. To resolve this issue, users may need to check their BIOS settings, inspect hardware connections, or use recovery tools.
A Disk Boot Fail means that the disk you normally start your computer from is not working. The computer can be started from the System Disk but that system disk will wear out so you will have no boot disk and no way of repairing the boot disk. Time to look for a new boot disk or better a brand new computer
System error memory and mini dump files are where system errors that you receive, are stored. They are safe to delete during disk cleanup.
The space on the hard disk is full delete some data from the hard drive it will be ok or add more hard disk in the system
"No Disk" Its not a virus........ Its ur disk problem . . . .
Dynamic disk get invalid or unreadable, as we all know, dynamic disk can not be recognized by Windows Home Edition. For example, dynamic disk applied in Windows XP Pro Edition, then, upgrade the OS to Windows 7 home, dynamic disk becomes invalid; accidentally power off when write data to dynamic disk; hardware environment changed.