Archive for the ‘Computer Maintenance’ Category

Don’t waste your time with inaccurate antispam products

Tuesday, July 22nd, 2008

I recently had a customer who apparently never received their email from Plimus that contains their download link and registration information.

Apparently, when they emailed me a complaint the same day, to which I replied with their information the same day, they never received that either.

Then, about a month later, the customer did a charge back and at the same time emailed me a long lecture about customer service, complaining that they never received a response.  Interestingly, they did receive my response to the lecture, which briefly explained that the fault probably laid with their anti-spam product, but also thanked them for the feedback.

So, it’s interesting that the customer received my second email, but not the first, and didn’t receive an email from Plimus, the company that processes my yProxy orders for me.

Let me point out that neither I, nor Plimus, has ever spammed anybody.  So, why did our emails get blocked?

This can probably be blamed on an inaccurate anti-spam product.  Either the customer’s ISP, network administrator, or the customer is responsible for the failure.

Inaccurate anti-spam products cause you to lose valuable information and valuable time.  I know that my emails were delivered and accepted because I did not receive an SMTP rejection or a bounce back.  This means that the failure was between the customer’s mail server and the delivery of the mail to the customer’s inbox.  I must assume that the emails were delivered in absence of a message to the contrary.

It’s like me sending someone a letter, the postal carrier puts the letter in your mailbox, but you either overlook the message because you’re so used to getting junk mail and you think it’s just more junk mail.  Or, your mom throws away the letter because she thinks it’s junk mail.

Sending an email is, of course, actually more reliable than the above analogy.  It’s more like me personally handing the letter to your mom because you told me to.

Here’s the thing.  If you’re having to check your junk mail folder, then you may as well just read your mail in the inbox and forgo the anti-spam software.  If your mom is throwing away your mail, then it’s time to fire your mom.

It’s better to have false negatives, where some spam is delivered, than false positives, which marks some emails spam that aren’t.  If your anti-spam product commonly marks legitimate emails as spam, then you must always check your junk mail folder.  This, of course, costs you time.

There is only one antispam product that blocks 99.95% of spam, and is 99.999% accurate when delivering legitimate emails (blocks only 1 in 100,000 legitimate emails).

Get Greenview Data’s SpamStopsHere.  It’s what I use.  You should too.  Otherwise you’ll think people are ignoring you, and you’ll be frustrated, and you’ll spend entirely too much time emailing people misplaced lectures on customer courtesy.

Recovering data from a soft or “logical” disk crash

Friday, July 18th, 2008

Okay, so you have a system disk that’s no longer bootable.  Perhaps you even accidentally deleted the partition or quick formatted it.  Whatever happened, you know you have lots of photos and other treasures on your hard drive that you didn’t back up.  How do you get your files off of a drive that won’t boot?  I’ll explain.

Requirements

Before we proceed, here is what you’ll require:

  1. Another working Windows XP system that supports the same type of hard drive interface, such as EIDE or SATA, and has a spare connection
  2. Sufficient disk space on the spare system’s hard drive, or an external hard drive, to hold your recovered files
  3. A backup device on the spare system, such as a DVD burner
  4. Data recovery software if you’ve deleted the files, deleted the partition, or formatted the drive

Removing the failed drive

Power down the failed computer system, and then unhook the failed drive.

Preparing the spare system for recovering deleted data

Before you hook up the failed drive to the spare system, there are some steps that you must take to prepare the spare system.  This will ensure that when you hook up the failed drive, it will not get written to, which could cause data loss if you are recovering deleted files or partitions.  Here are the steps to perform on the spare system if you are recovering deleted data:

  1. Disable System Restore
  2. Disable the indexing service
  3. Permanently disable all antivirus programs
  4. Turn off all scheduled maintenance, such as scheduled defrags, scheduled virus scans, and scheduled backups

Preparing the spare system for recovering data from a crashing or unbootable operating system

These steps ensure that you will be able to access the required parts of the drive.

  1. Turn on show hidden files
  2. Disable hide protected operating system files
  3. Disable “Use simple file sharing”

Hookup the failed drive to the spare system

Power down the spare system and install the failed drive.

Ensure that you set master/slave settings properly for IDE or EIDE drives.  If you set things up properly, your failed drive will appear as one or more new drive letters in Windows when you boot up the spare system.

Restoring data from a crashing or unbootable Windows system drive

If the problem was simply that the operating system wouldn’t boot or was crashing, all of your files should be there for the grabbing.

If you’ve used encrypted folders, ensure that you log into the spare system using the same username and password.  Create an account if it doesn’t already exist.

Otherwise, log into the spare system as administrator and take control of all of the files on the drive.  To do this, simply:

  1. Assuming you’ve already disabled the Simple File Sharing mode, right click on the failed drive and click Properties from the pop-up menu
  2. On the security tab, click the Advanced button
  3. On the Owner tab, select your login ID, fill in the checkbox for “Replace owner on subcontainers and objects” and click Ok
  4. You should now have full access to all of the files on the failed drive

To find a user’s Desktop, My Documents, and Internet Explorer Favorites folder, look in:

\Documents and Settings\username\

To find your Outlook Express database files, look in:

\Documents and Settings\username\Local Settings\Application Data\Identities\{GUID}\Microsoft\Outlook Express\

Restoring deleted data

If you did a low level format, your files are gone.

Restoring other deleted data requires specialized software.

Stellar Phoenix NTFS Data RecoveryI’ve had recent experience using Stellar’s Phoenix Recovery Software.  The NTFS Data Recovery Software package is sufficient for restoring your deleted files, including files from a deleted partition or even a quick formatted partition.

Stellar’s software worked, but the user interface was outdated and just plain not friendly.  For example, I only wanted to recover JPEGs over 1 MB, so I sorted the lost file list by size, but then I had to select each JPEG manually.  I couldn’t select a range.  Also, why I can’t I scan the whole drive for lost folders without scanning raw files at the same time?  In order to do that, I had to uncheck all of the file types.  Where are the FLV file types?  The file types list needs an upgrade.  Also, every time I wanted to change the selected file types, I had to start over from scratch because each time I went into the dialog to pick my file types, it automatically selected them all for me.  This was even a bigger pain because in order to add file types, I had to leave the dialog, add the file type, then come back.  The pros, of course, were that it worked.

When restoring deleted files, always restore the data to your spare computer’s drive and never to the failed drive.   Any time you write to the failed drive, you may be overwriting other data, which will then be gone forever.

Backing up and archiving your data

Now that your data is successfully recovered to your spare system’s drive, it is time to archive all of your important files.  The preferred backup method is DVD.  DVDs are more resiliant than magenetic or flash based media.  Use the verification mode on your DVD burning software to verify that the files were correctly burned.  If you don’t have this feature, you’ll need to test the backups before you archive them.

You can cheaply make multiple backups on DVD.  Store one copy in your home safe, if you have one.  If they’re not in a safe,  thieves may inadvertently grab them or your spouse may accidentally pitch them.

Store another copy in a safety deposit box.  This protects you in the case of fire or anything else that might happen to your home.  An alternative to a safety deposit box is a locked drawer at your office, or a local family member’s safe.

Label every DVD with the contents, such as “Photos”, “Home movies”, “Artwork”, or “Important Documents”, and a date.  Don’t start throwing away the old backups unless your safety deposit box and safe are out of room.  It’s best to have two or more generations of backups around.

Keep all of your photos and other masterpieces backed up on an external drive.  You can quickly grab them if you need them, and you’ll be protected in case of another system crash.  However, a backup on an extenal drive is not the same as archiving the data.  The external drive will burn in a fire and it will be the first thing the thieves grab.  The external drive is for convenience, not peace of mind.

Archive all of your data on DVDs in your home safe and a safety deposit box or other secure site away from your home.  Then, sleep well at night.