killdisk.com
Active@ Kill Disk is a hard drive eraser software for secure formatting of hard drives without any possibility of following data recovery.
At a glance
- Category
- Other
- Language
- English
- Paid-content signal
- Paid contentObserved
- Registered
- 2001
- Hosting
- Amazon.com, Inc.Inferred
- HTTPS certificate trusted
- PassedObserved
- Last updated
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More questions →How to Use Ahrefs for Your First SEO Audit: A Step-by-Step Tutorial
If you're new to Ahrefs and want to run your first SEO audit, the fastest path is: open Site Explorer, enter your target URL, review the Overview for a health snapshot, then dig into Organic Keywords, Top Pages, and Site Audit to find specific problems. From there, build a short prioritized to-do list instead of trying to fix everything at once.
This tutorial walks through that workflow using a realistic starting scenario, explains what the numbers mean, and shows how to turn findings into actions.
Before You Start: Pick a Narrow Scope
A common beginner mistake is auditing an entire large website on day one. The reports become overwhelming, and you can't tell which issues matter.
Instead, choose one of these starting points:
- A single important page (your homepage or a key product/service page)
- A small site (under ~50 pages, e.g., a personal blog or small business site)
- One section of a bigger site (e.g.,
/blog/)
For this tutorial, assume you're auditing a small business site with about 30 pages. The same steps scale up later.
You'll need an Ahrefs account to follow along. Ahrefs offers paid plans, and pricing and feature limits change over time, so check the current Pricing page for what's included in each tier before committing.
Step 1: Enter Your Target in Site Explorer
Site Explorer is Ahrefs' core tool for analyzing any website or URL.
- Open Site Explorer from the top navigation.
- In the search box, paste your domain (e.g.,
example.com). - Choose the Exact URL or Domain mode depending on scope. For a full-site view, use Domain or Prefix; for a single page, use Exact URL.
- Press Enter.
You'll land on the Overview report. Don't try to absorb everything — focus on four numbers first.
Reading the Overview Snapshot
| Metric | What it tells you | How to use it |
|---|---|---|
| Ahrefs Rank (AR) | Relative strength of the site's backlink profile vs. others in the database | Useful for comparing against competitors, not as a standalone goal |
| Organic traffic | Estimated monthly visits from search | A rough trend indicator, not exact analytics |
| Organic keywords | Estimated number of keywords the site ranks for | Shows breadth of visibility |
| Backlinks / Referring domains | Total links and unique sites linking to you | Referring domains matter more than raw backlink count |
Important caveat: Ahrefs' traffic and keyword numbers are estimates based on its own data. They won't match Google Search Console or your analytics exactly. Treat them as directional, not absolute.
Step 2: See What You Already Rank For
Go to Organic Keywords in the left sidebar. This shows queries where your site appears in search results.
Sort by Traffic (descending) to see which pages bring the most estimated visitors. Then look for:
- Keywords ranking in positions 4–15 — these are often the easiest wins. A small content or on-page improvement can push them onto page one.
- Keywords with high volume but low position — potential opportunities if the topic is relevant.
- Irrelevant keywords — if you rank for something off-topic, it may signal thin or mismatched content.
Write down 5–10 of the position 4–15 keywords. These become your first optimization targets.
Step 3: Find Your Best and Weakest Pages
Open Top Pages. This ranks your URLs by estimated organic traffic.
Look for two things:
- Your top performers — understand what topics and formats work. Can you create more content like this?
- Pages with traffic but poor rankings — these may need on-page fixes (title, headings, internal links).
If a page gets zero traffic and targets a topic you care about, it's a candidate for a rewrite or consolidation.
Step 4: Run a Technical Site Audit
Now move to Site Audit. This crawls your site and flags technical and on-page issues.
- Click Site Audit → New project.
- Enter your domain and set crawl settings (default is usually fine for a small site).
- Start the crawl and wait for it to finish.
Once complete, you'll see a Health Score and a list of issues grouped by category.
Which Issues to Fix First
Not all issues are equal. Prioritize in this order:
| Priority | Issue type | Why it matters |
|---|---|---|
| 1 | Broken links (404s) | Bad for users and crawl efficiency |
| 2 | Pages blocked from indexing | They can't rank at all |
| 3 | Missing or duplicate title tags | Directly affects click-through and relevance |
| 4 | Slow-loading pages | Affects experience and rankings |
| 5 | Thin content | Low value to users and search engines |
Ignore low-impact warnings (like minor meta description length) until the big items are handled.
Step 5: Turn Findings Into a To-Do List
You now have raw data. Convert it into a short, actionable list. Example:
- Fix 3 broken links found in Site Audit.
- Rewrite title tags on 5 pages with duplicate titles.
- Improve 4 pages ranking in positions 6–12 by adding missing subtopics and internal links.
- Remove or update 2 thin pages with no traffic.
Keep the list to 5–10 items max for your first audit. Finishing a short list beats starting a long one.
Common Beginner Mistakes
- Chasing every red flag. Site Audit flags many minor issues. Fix what affects rankings and users first.
- Trusting estimates as exact numbers. Ahrefs data is modeled, not measured from your analytics.
- Auditing a huge site too early. Start small to learn the interface.
- Ignoring search intent. A page can be technically perfect but still fail if it doesn't match what searchers want.
- Forgetting to re-crawl. After fixes, run Site Audit again to confirm improvements.
Where to Go Next
Once your first audit is done:
- Compare with competitors using Site Explorer's Competing Domains and Content Gap reports.
- Track keyword rankings over time with Rank Tracker.
- Explore backlink opportunities in the Backlinks and Link Intersect reports.
- Set up recurring Site Audit crawls so new issues surface automatically.
Your first audit isn't about perfection — it's about building a repeatable habit: enter a target, read the key reports, pick the highest-impact fixes, and act. Do that once a month and your site's health compounds.
What Is DOS and How Can You Play Classic DOS Games Today?
DOS (Disk Operating System) was the command-line operating system that most IBM-compatible PCs ran before Windows became the dominant environment, and it's the platform nearly every classic PC game from the 1980s and early-to-mid 1990s was built for. Because modern 64-bit Windows, macOS, and Linux can't run those games natively, you play them through an emulator such as DOSBox, or through a site that packages the emulator and game together so it launches with a click. This article explains what DOS actually was, why emulation is necessary, and how to get a DOS game running — including the sound, speed, and fullscreen problems that trip most people up.
What DOS actually was
DOS is not a single product but a family of operating systems. The version that mattered for gaming was MS-DOS (Microsoft) and its close relative PC DOS (IBM), with compatible clones like DR-DOS and FreeDOS filling out the field. Key traits:
- Command-line interface. You typed commands at a prompt (
C:\>) rather than clicking icons. Games typically launched by typing an executable name, e.g.PRINCEorDOOM. - Real-mode memory model. Early DOS gave programs direct access to hardware and to a limited pool of conventional memory (640 KB), which is why so many games shipped with memory-configuration instructions for
CONFIG.SYSandAUTOEXEC.BAT. - Direct hardware access. Games talked straight to the sound card, graphics adapter, and input devices. That's what made them fast on period hardware — and what makes them fragile on modern machines, where the operating system mediates all hardware access.
- No multitasking. One program ran at a time. Later versions added limited memory management, but the model stayed fundamentally single-tasking.
Windows 3.1 and Windows 95 could run on top of DOS, and many games of that era shipped as DOS executables launched from within Windows. That's why a preservation project like Zomb's Lair lists DOS alongside Windows 3.1 and Amiga as separate platforms — they're genuinely different targets requiring different handling.
Why you need an emulator on a modern PC
A DOS game expects to own the machine: it writes directly to video memory, programs the sound chip, and reads the keyboard hardware. A modern OS forbids all of that. Three practical consequences:
- 64-bit Windows cannot run DOS programs at all. The NTVDM (NT Virtual DOS Machine) that provided DOS support was dropped from 64-bit builds. On 32-bit Windows it still exists, but it's unreliable for games.
- Timing breaks. DOS games often tied game speed to CPU clock speed. On a multi-gigahertz processor, a game designed for a 33 MHz 486 may run absurdly fast or refuse to start.
- Sound hardware is gone. The Sound Blaster, AdLib, and Gravis Ultrasound cards these games target don't exist in modern machines, and the games don't know how to use what replaced them.
DOSBox solves all three by emulating a complete DOS PC — CPU, video, sound card, and all — inside a window. It's the standard tool, it's free and open source, and it runs on Windows, macOS, and Linux.
Where to get DOS games
You have two broad routes, and they differ mainly in how much setup you do yourself.
| Route | What you get | Setup effort | Best for |
|---|---|---|---|
| Emulator + game files separately | DOSBox plus game data you supply | Higher — you configure mounts, sound, and cycles | People who want control, or who already own the files |
| Pre-packaged / pre-configured releases | Game bundled with a configured emulator, launched from one executable or shortcut | Low — often double-click and play | People who want to play, not tinker |
Preservation and curation projects occupy the second category. Zomb's Lair, for example, describes itself as "a passion project dedicated to bringing old classics to a modern audience, while eliminating all of the hurdles that that normally entails," and organizes its catalog by platform (DOS, Amiga, Windows 3.1) and by genre (Adventure, RPG). The value of that kind of packaging is precisely the configuration work — memory settings, sound setup, and speed calibration — done for you.
A note on the legal side, since it affects which route you choose: much of this material is abandonware — old commercial software whose publisher has stopped selling or supporting it. Abandonware is a community norm, not a legal category, and rights holders can and do re-release games commercially. Where a game is currently sold (on GOG, Steam, or elsewhere), buying it is both the safer and usually the easier path, since those storefronts ship pre-configured DOSBox builds too.
Running a DOS game: the basic steps
If you're configuring DOSBox yourself, the workflow is the same for almost every game.
- Install DOSBox for your platform and note where you put your game folder. Keep paths short and free of spaces —
C:\DOS\GAMES\GAMENAMErather than a deep folder with spaces in the name. DOS itself had no concept of long filenames. - Mount a drive. At the DOSBox prompt,
MOUNT Cpoints an emulated drive letter at a real folder. The expected result is a confirmation message; if you get an error, the path is wrong. - Switch to that drive and change into the game directory.
- Run the game's setup utility first if it has one (commonly
SETUP.EXE,INSTALL.EXE, orSOUNDSET.EXE). This is where you tell the game which sound card to use — pick Sound Blaster or Sound Blaster 16 with the default port and IRQ values, which is what DOSBox emulates. - Launch the game by typing its executable name.
- Adjust speed if needed. DOSBox's cycle count controls how fast the emulated CPU runs; raising it speeds a sluggish game up, lowering it slows a too-fast one down.
If you're using a pre-packaged release, steps 1–4 are already done. You launch a shortcut and the emulator starts with the right drive, sound, and speed settings.
Troubleshooting the usual problems
No sound, or sound only in some places. The game's own setup utility is almost always the culprit — it's still configured for a card DOSBox doesn't emulate. Re-run setup and select Sound Blaster. If the game predates sound-card setup utilities, it may only support PC speaker audio, which DOSBox emulates but which sounds thin by design.
Game runs too fast or too slow. This is the cycle setting. Games from the late 80s and early 90s are the most sensitive. Some front-ends let you bind hotkeys to raise and lower cycles while the game runs, which is the fastest way to find a stable value.
Fullscreen looks stretched or has black bars. DOS games ran at fixed resolutions like 320×200, which don't match a modern monitor's aspect ratio. Stretching fills the screen but distorts the image; leaving it unstretched preserves the original proportions. There's no correct answer — pick based on whether you prefer accuracy or a filled screen.
The game can't find enough memory. Classic DOS memory errors come from the 640 KB conventional-memory limit. DOSBox handles most of this automatically, but games with unusual requirements may need specific memory settings in the emulator's configuration file.
Keyboard or mouse doesn't respond correctly. DOSBox captures input when the game window is focused; releasing the capture (usually with a hotkey) returns control to your desktop. If a game needs a joystick, it has to be configured both in DOSBox and in the game's own setup.
What to take away
DOS was the command-line, single-tasking, hardware-direct operating system that defined PC gaming for roughly a decade, and its design is exactly why those games don't run on a modern machine without help. DOSBox emulates the whole environment; packaging projects remove the configuration burden on top of that. If you want to play rather than configure, start with a pre-packaged release and treat the game's own setup utility as the first thing to check whenever sound or speed misbehaves.
Website Overview
Software versions and possible internal network details are exposed together, potentially making targeted reconnaissance easier. Identifiable technologies and additional version or configuration signals make the service easier to fingerprint, which may help targeted scanners narrow their checks.
Domain and Registration
Registered in 2001, this domain has about 24 years of history. That suggests continuity, although ownership and purpose may have changed. Transfer-protection status is present, helping reduce the risk of unauthorized domain transfers. The domain uses the common .com extension, which is not an independent safety signal.
DNS and Email
The observed email authentication setup is incomplete: DMARC is missing. Nameservers are provided by worldwidedns.net, indicating managed DNS hosting. MX records point to the lsoft.net email service. No CNAME was found; the observed records resolve directly to addresses. DNSSEC signatures were not detected, so this additional DNS authenticity protection is not confirmed.
TLS and Certificates
The certificate issuer is Sectigo Limited, a commercial certificate authority. The certificate uses an RSA 2048-bit public key, offering broad client compatibility. The server supplied a complete certificate chain. No organization name is present in the certificate; the available fields are consistent with domain validation. The certificate is valid for about 198 days in total, with 90 days remaining.
HTTP and Browser Security
The Server header exposes the software version: Microsoft-IIS/10.0. This makes version-targeted checks easier, but is not proof of an exploitable vulnerability. X-Powered-By exposes backend information: ASP.NET. The checked browser-security headers were not detected, leaving fewer explicit browser-side safeguards. The headers contain possible internal network information: Microsoft-IIS/10.0. No explicit CDN or WAF marker was found in the response headers.
Technology Stack Analysis
The public page identifies Bootstrap, Google Tag Manager, Microsoft IIS 10.0, with exact versions exposed for 1 technologies. These details can narrow vulnerability checks, although exposure alone is not a vulnerability.
Search and Social Sharing
The title has 66 characters and may be truncated in search results. No homepage canonical URL was detected. If duplicate URLs exist, consolidation may be less explicit. No Open Graph metadata was detected, so social previews may depend on platform inference. A meta description is present, with 138 characters. The observed directives allow indexing and link following.
Hosting and Email
Registration details
| Registrar | Rebel Ltd |
|---|---|
| Registered | 2001-12-14 |
| Expires | 2028-12-14 |
| Domain status | client transfer prohibited、client update prohibited |
| Nameservers | ns1.worldwidedns.net、ns2.worldwidedns.net、ns3.worldwidedns.net |
| DNSSEC | unsigned |
DNS records
TLS and certificates
HTTP response headers
| Header | Value |
|---|---|
| content-type | text/html |
| server | Microsoft-IIS/10.0 |
Identified technologies
Pages, Search and Sharing
| Meta description | Active@ Kill Disk is a hard drive eraser software for secure formatting of hard drives without any possibility of following data recovery. |
|---|---|
| Canonical URL | Not detected |
| Language | English (default) |
| Twitter Card | Not detected |
Unknown
robots.txt (opens in a new tab)
HTTP 404No robots.txt found
Sitemaps
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