How do I install the Hdd Expert skill?

Run npx skillmds@latest add majiayu000/hdd-expert in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Hdd Expert safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: PASS, Skill Scanner: PASS. Capability flags: docs only. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Hdd Expert?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Hdd Expert free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Hdd Expert?

majiayu000 (@majiayu000) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Hdd Expert by majiayu000 — Agent Skill

Name: Hdd Expert
Rating: 4.5 (4 reviews)
Author: majiayu000

File contents

HDD Expert - ST-506/MFM

Expert knowledge for the ES-1841's hard disk controller.

Key Specifications

Property	Value
I/O Ports	`320h`-`327h`
DMA Channel	3
IRQ	5
Addressing	CHS

I/O Ports

Port	Read	Write
`320h`	Data	Data
`321h`	Error Register	Write Precomp
`322h`	Sector Count	Sector Count
`323h`	Sector Number	Sector Number
`324h`	Cylinder Low	Cylinder Low
`325h`	Cylinder High	Cylinder High
`326h`	SDH Register	SDH Register
`327h`	Status	Command

Status Register (`327h`)

Bit	Name	Description
7	BSY	Controller busy
6	RDY	Drive ready
3	DRQ	Data request
0	ERR	Error occurred

SDH Register (`326h`)

Bit 7: 1 (always)
Bit 6: LBA mode (0=CHS)
Bit 5: 1 (always)
Bit 4: Drive select
Bits 0-3: Head number

Commands

Command	Code
Recalibrate	`10h`
Read Sector	`20h`
Write Sector	`30h`
Seek	`70h`

Command Sequence

Wait BSY=0, RDY=1
Write parameters (322h-326h)
Write command (327h)
Wait for IRQ or poll DRQ
Transfer data
Read status

References

See references/ for detailed documentation.

---name: hdd-expertdescription: Expert on ST-506/MFM Hard Disk Controller for ES-1841. Provides guidance on hard disk access, sector read/write, CHS addressing, command registers, and HDD DMA operations.--- # HDD Expert - ST-506/MFM Expert knowledge for the ES-1841's hard disk controller. ## Key Specifications | Property | Value | | ----------- | ------------------------ | | I/O Ports | `320h`-`327h` | | DMA Channel | 3 | | IRQ | 5 | | Addressing | CHS | ## I/O Ports | Port | Read | Write | | ------- | ---------------- | ---------------- | | `320h` | Data | Data | | `321h` | Error Register | Write Precomp | | `322h` | Sector Count | Sector Count | | `323h` | Sector Number | Sector Number | | `324h` | Cylinder Low | Cylinder Low | | `325h` | Cylinder High | Cylinder High | | `326h` | SDH Register | SDH Register | | `327h` | Status | Command | ## Status Register (`327h`) | Bit | Name | Description | | --- | ---- | --------------- | | 7 | BSY | Controller busy | | 6 | RDY | Drive ready | | 3 | DRQ | Data request | | 0 | ERR | Error occurred | ## SDH Register (`326h`) ```text Bit 7: 1 (always) Bit 6: LBA mode (0=CHS) Bit 5: 1 (always) Bit 4: Drive select Bits 0-3: Head number ``` ## Commands | Command | Code | | ------------ | ------ | | Recalibrate | `10h` | | Read Sector | `20h` | | Write Sector | `30h` | | Seek | `70h` | ## Command Sequence 1. Wait BSY=0, RDY=1 2. Write parameters (`322h`-`326h`) 3. Write command (`327h`) 4. Wait for IRQ or poll DRQ 5. Transfer data 6. Read status ## References See [references/](references/) for detailed documentation.

Frequently asked questions

Hdd Expert