Những câu hỏi thường gặp về Linux
H:
Tiện ích Mtools nói rằng không thể khởi động ổ đĩa X
Đ:
This means that mtools is having trouble accessing the drive. This can be due to several things.
Often this is due to the permissions on floppy drive devices ([/dev/fd0*] và [/dev/fd1*]) being incorrect.
The user running mtools must have the appropriate access. See the manual page for chmod for details.
Most versions of mtools distributed with Linux systems (not the standard GNU version) use the contents
of a file [/etc/mtools] to determine which devices và densities to use, in place of having this information
compiled into the binary. Mistakes in this file often cause problems. There is often no documentation
about this.
For the easiest way to access your MS-DOS files (especially those on a hard disk partition) see How do
I access files on my DOS partition or floppy? Noteyou should never use mtools to access files on an
msdosfs mounted partition or disk!
H:
At the Start of Booting:
Memory tight
Đ:
This means that you have an extra-large kernel, which means that Linux has to do some special
memory-management magic to be able to boot itself from the BIOS. It isn’t related to the amount of
physical memory in your machine. Ignore the message, or compile a kernel containing only the drivers
và features you need. (“Làm thế nào để nâng cấp/biên dịch lại hạt nhân”)
H:
The System Log kêu rằng, “
end_request: I/O error
, ....”
Đ:
This error message, và messages like it, almost always indicate a hardware error with a hard drive.
This commonly indicates a hard drive defect. The only way to avoid further data loss is to completely
shut own the system. You must also make sure that whatever data is on the drive is backed up, và restore
it to a non-defective hard drive.
This error message may also indicate a bad connection to the drive, especially with home brew systems.
If you install an IDE drive, always use new ribbon cables. It’s probably is a good idea with SCSI drives,
too.
In one instance, this error also seemed to coincide with a bad ground between the system board và the
chassis. Be sure that all electrical connections are clean và tight before placing the blame on the hard
drive itself.
H:
“
Bạn không tồn tại. Đi đi.
”
Đ:
This is not a viral infection. It comes from programs like write, talk, và wall, if your invoking UID
doesn’t correspond to a valid user (probably due to [/etc/passwd] being corrupted), or if the session
(pseudoterminal, specifically) you’re using isn’t properly registered in the [utmp] file (probably because
you invoked it in a funny way).
H:
“
Operation not permitted (thao tác không được phép)
.”
Đ:
One or more of the file’s or directory’s attribute bits are set incorrectly. If the “
I
” bit is set, for
example, you won’t be able to change file permissions with chmod.
The solution is to use lsattr to display file và directory attributes, và chattr to set và unset them. The
programs’ documentation is contained in their manual pages.
68
