---
title: "QL Spin Doctor"
type: "article"
slug: "ql-spin-doctor"
url: "http://localhost/article/ql-spin-doctor/"
markdown_url: "http://localhost/article/ql-spin-doctor.md"
published_at: "2026-02-08T23:03:22+00:00"
modified_at: "2026-02-08T23:03:22+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "I’ve always had a fascination with disk drives. I I started working on computers 16 years ago when disk drives were actually large enough drives that you could repair them outside of a clean room. I spent many hours replacing and aligning heads, rewriting servo code and all the other jobs necessary to keep disk…"
category:
  - name: "International QL Report"
    slug: "international-ql-report"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/international-ql-report/"
post_tag:
  - name: "QL"
    slug: "ql"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ql/"
model:
  - name: "Sinclair QL"
    slug: "sinclair-ql"
    taxonomy: "model"
    url: "http://localhost/model/sinclair-ql/"
indiv:
  - name: "Don Walterman"
    slug: "don-walterman"
    taxonomy: "indiv"
    url: "http://localhost/indiv/don-walterman/"
publication_r:
  id: 33740
  title: "International QL Report"
  type: "periodical"
  url: "http://localhost/periodical/international-ql-report/"
authors_r:
  - name: "Don Walterman"
    slug: "don-walterman"
    taxonomy: "indiv"
    url: "http://localhost/indiv/don-walterman/"
volume: "4"
issue: "3"
issues_articles:
  - id: 37210
    title: "International QL Report V4 I3"
    type: "issue"
    url: "http://localhost/issue/international-ql-report-v4-i4/"
pages: "35-36"
pubdate: "September/October 1994"
archive_link: false
---

# QL Spin Doctor

I’ve always had a fascination with disk drives. I I started working on computers 16 years ago when disk drives were actually large enough drives that you could repair them outside of a clean room. I spent many hours replacing and aligning heads, rewriting servo code and all the other jobs necessary to keep disk drives working. Since I’ve had my QL, that interest in disk drives has followed over to the world of QL disk drives. I’d like to make this a place where all aspects of disk drives on QL computers can be discussed. I do mean discussed because I have many questions of my own about the early disk interfaces for the QL.