Fragmentation makes your hard disk
do extra work that can slow down your computer. Removable storage devices such
as USB flash drives can also become fragmented. Disk Defragmenter rearranges
fragmented data so your disks and drives can work more efficiently. Disk
Defragmenter runs on a schedule, but you can also analyze and defragment your
disks and drives manually. To do this, follow these steps:
To
defragment your hard disk
- Open Disk Defragmenter by clicking the Start button . In the search box, type Disk Defragmenter, and then, in the list of results, click Disk Defragmenter.
- Under Current status, select the disk you want to defragment.
- To determine if the disk needs to be defragmented or not, click Analyze disk. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
Once
Windows is finished analyzing the disk, you can check the percentage of
fragmentation on the disk in the Last Run column. If the number is above 10%,
you should defragment the disk.
- Click Defragment disk. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
Disk Defragmenter might take from
several minutes to a few hours to finish, depending on the size and degree of
fragmentation of your hard disk. You can still use your computer during the
defragmentation process.
Hard Drive Failure: Warnings and Solutions
Sooner or later, all hard drives
crash. It is only a matter of when. When it happens, the degree of sweat and
tears you experience is directly related to how prepared you were for it to
begin with. Backing up your data is important. I even have two computers which
are set up almost identically so that if the drive on one of my machines dies,
I don’t lose any worktime or data. Preparation is the best medicine, but this
stuff happens anyway.
Warning
Signs
In some cases, you start to see
signs of a problem before the drive up and dies on you. Early warning signs
include:
- Computer freezes often. When it happens, the mouse cursor is unmovable and keyboard input is ignored. Nothing works and a restart is required to recover the computer.
- Files Mysterious disappearing.
- Frequent lock-up during booting. I say “frequent” because all computers will freeze every now and then and it doesn’t necessarily mean the drive is failing. You’re looking for a pattern here.
- File access mysteriously slows to a turtle’s pace. Saving files or open files simply takes forever.
These are typical warning signs of a
pending drive failure. When you start to see a noticeable increase in these
patterns, backing up your data needs to take top priority. Otherwise you really
are playing Russian roulette with your hard drive.
Signs
of Real Failure
When the drive actually fails, it is
a mechanical failure. Many times you will actually hear the drive making
strange metallic noises. This is the read/write head thrashing around aimlessly
and indicates failure. When your system has a crashed hard drive, it will not
be able to boot. You may even get a blue screen of death.
Hard drive failure is a black and
white thing. If the drive is working at all, you have a drive which is about to
fail and is exhibiting the above warning signs in varying degrees. Once actual
failure occurs, it just doesn’t work.
Diagnostics
The first thing to do is run through
some inspection of the computer to see if this is indeed a drive failure. Here
is a basic checklist. Now, if the PC was working fine and then just stopped
working, chances are these items are not the case.
- Check to ensure the power cable is properly connected to the drive.
- Check to be sure the data cable is properly connected to the drive.
- If it is an IDE drive, ensure the ribbon cable is aligned properly. Red edge of the cable is aligned with Pin 1 of the connector on the drive. Pin 1 is closest to the power plug, typically.
- Master/slave assignment is correctly set if this is an IDE drive.
Once the physical connections have
been verified, it’s good to see if the computer can even see the drive at all.
If this is an IDE drive, go into the computer’s BIOS and have it auto-detect
the drive. If it can detect it, then we know we have a solid connection. It
doesn’t mean the drive is good, just that the BIOS can see it.
Using a bootable diskette for your
anti-virus program, reboot and run a scan on the drive. It will scan the drive,
including the boot partition, for viruses. If it finds anything, let it do it’s
job. If it is able to successfully scan the drive at all, the drive is at least
still working.
Use a third-party disk management
program or simply FDISK to view the partitions on the drive. If no active
partitions are found, then you know the partitions are screwed up.
Unfortunately, that would be bad news. You can try a data recovery utility (see
below) to recover the data. Otherwise, you will need to re-partition the drive
and lose your data in the process.
You may want to run a ScanDisk or
Check Disk on the drive. This is best if the drive is functioning partially. If
you have a full mechanical failure, nothing will work. If some data is
retrievable but others are not, then we have a partial failure. Try running
Scandisk or Check Disk to scan the drive. Allow it to perform a full scan and fix
anything it finds.