Dual-hard drive dual-win8 and Ubuntu are the conditions. grub cannot be started anymore. You need to fix it so that it can start the three systems. The specific distribution is: Hard Disk A + Win8A hard disk B + Win8B + ubuntu. Win8 is started by default.
Use LinuxLive USB Creator to create usb live and then start the
access, right-click, select Properties, and select the Security message box on the Security tab, and select your own username under the "Owner" tab on the Advanced tab, which is typically administrator. When you select the above options, click OK to save these settings.
In addition, repair software such as Easepecovery Pro can be used to repair a mobile hard
drive thing, send repair it, the general hard drive we will not repair.
If it's your own system, you look at it from the Device Manager, move the hard disk before the exception icon, such as the question mark exclamation point,
Introduction to Interfaces
IDE interface
(Integrated-drive-electronics) is now commonly used external interface, mainly connected to the hard disk and optical drive. Using 16-bit data parallel transmission mode, small size, fast data transmission. An IDE interface can only receive two external devices.
The IDE's English is all called "Integrated
Even if the hard disk's daily use and maintenance is good, it is possible to produce bad way (many of the reasons, such as: hard disk quality problems, etc.). Once the hard drive appears bad, people do not have to panic, I have to identify and repair the
checking the integrity of the backup is also important to protect the data on the hard disk, because the Windows operating system is damaged and can be reload, and if the hard disk partition table is broken, the system will not recognize the hard drive and the problem is much more serious. Use disk tool software, such
unplug the host US interface, a little wait to insert again to try, the author encountered many this situation, began to access computer prompts due to equipment access, But in my computer can not see the mobile hard drive letter, repeated Plug and pull a few results have.
③ first to get another computer to try, if normal, is your system, if not normal, is your hard
Test hard drive Bad Sectors in CentOS
Hard Disk status testing tools: smartctl, Badblocks, hdparm
You can quickly see whether the hard disk is healthy by using smartctl. The command is as follows:
[Root @ qy ~] # Yum installsmartmontools-y
Start SMART
# Smartctl -- smart = on -- offlineauto = on -- saveauto = on/dev/sd
-effective bit corruption can generally also be enforced with FDISK/MBR override resolution. Partition table corruption is troublesome, because the partition is not recognized, the system will treat the hard disk as an unpartitioned bare disk, resulting in some software can not work.
There is also a form of partition table corruption, which I would like to call "Partition mapping", which shows the same partition as the active partition. The same incl
normally. This is not necessarily "bad", usually with the MBR removed and 70% better to repartition. Second, can be normal partition, can be formatted, but the scan found that there is a "B" marked, that is, usually called "out of the bad way." There is no "physical bad way" or "Bad Logic", "B" a small number of words (less than 100), basically 80% can be fixed as a "good hard drive." Three is not normal p
(24 hours * 7 days), mail support and online repair, Dell also provides server extension program and "Keep your hard drive service", so that it builders or managers more assured.
Dell "Keep your hard drive" allows the user to obtain replacement and replacement of the
People who use laptops may have encountered unreadable data and failed to identify hard drive failures such as hard drives. So what are the causes of these failures? How to solve it after the appearance? How to recover data loss caused by hard disk damage? After consulting professional data recovery personnel, I consul
the hard drive of the main boot area of the data is damaged, you can use the partition software to repair the main boot zone program code, such as using a floppy disk to start the computer, use the FDISK/MBR command to Also can go to the corresponding hard disk manufacturer's website to download special
and write the hard disk after the drive or the Drive boot system. You can use fdisk to reset the active partition for repair.
If a partition type is incorrect, the loss of a partition may occur. The fourth byte of the partition table is the partition type value. Normally, the basic DOS partition value larger than 32
computers often do not detect the hard drive what to do
The computer often does not detect the hard drive solution one:
There are several reasons for these:
1, the hard disk itself has a problem, may be broken, with tools to detect, bad can only send
How to use a low-level hard drive
Functions of Hard Disk low-level formatting Low disk formatting is the most thorough Initialization Method for the hard disk. After a low disk, all the data previously protected will be lost, so generally, the low disk is very undesirable, the ephemeral
. If the program is damaged, it cannot be booted from the hard disk, but the hard disk can be read and written after being started from the soft drive or optical drive. The solution to this fault is relatively simple. It is most convenient to use the FDISK of the higher DOS version. When the FDISK with parameters/mbr i
the Drive boot system. You can use FDISK to reset the active partition for repair.
If a partition type is incorrect, the loss of a partition may occur. The fourth byte of the partition table is the partition type value. Normally, the basic DOS partition value larger than 32 MB is 06, and the extended DOS partition value is 05. Many people use this type of value to encrypt a single partition and restore the
good, change the interface to try , the front is not good, change back to try again. Why the computer crashed? How does the computer often crash?
PS: Some computers because of the front USB interface and not connected to the motherboard interface, resulting in the front USB interface is not available a lot, so this also need to pay attention to.
② when the computer host USB interface is available, and the data cable and hardware are firmly connected, the mobile
format.
Ghost also has a killer, which is to repair the hard disk's bad sector. I used to ghost a hard drive to get it done before long. The thing is this: I get 120 g of hard disk from friends, connect to the computer but found that the
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