旧ATA/IDE硬盘经USB适配器连接后仅可访问部分文件夹，如何获取硬盘内全部数据？

Hey there! This is a super common issue when accessing older Windows drives via external adapters—let’s walk through the most likely fixes step by step:

1. Fix Permissions (Most Common Culprit) #

Windows locks down folders like Documents and Settings tight, especially when accessing them from a different PC. Here’s how to take ownership:

• Right-click the empty Documents and Settings folder, go to Properties > Security tab.
• Click Advanced, then in the Owner section hit Change.
• Type your current PC’s username, click Check Names to confirm, then hit OK.
• Check the box that says Replace owner on subcontainers and objects, apply the changes, and confirm any prompts.
• Go back to the Security tab, click Edit, add your user account, and grant it Full Control permissions. Apply the changes, then either restart File Explorer or re-plug the drive—you should see the content now.

2. Scan for File System Corruption #

Older drives often develop minor file system errors that block access. Use the built-in chkdsk tool:

• Press Win+X and select Windows Terminal (Admin) or Command Prompt (Admin).
• First, note your drive’s letter (e.g., E:—you can find this in File Explorer).
• Run the command: chkdsk E: /r
• This will scan for bad sectors and repair file system issues. It might take a while depending on the drive size—let it finish completely, then check the folder again.

3. Show All Hidden/System Files #

Sometimes just enabling "View hidden files" isn’t enough—you need to unhide protected system files too:

• Open File Explorer, go to the View tab.
• Check Hidden items, then click Options > Change folder and search options.
• Switch to the View tab, uncheck Hide protected operating system files (Recommended), and click OK.
• Refresh the folder—you might find the missing content now.

4. Check USB Adapter Power #

Old ATA/IDE drives need more power than some cheap USB adapters can provide, which can cause partial access issues:

• Plug the adapter into a rear USB port on your PC (front ports often have weaker power).
• If your adapter has an extra power cable (like a second USB plug or a dedicated power adapter), make sure it’s connected—this is critical for older drives.

If none of these work, you might want to try a different USB adapter (sometimes compatibility is an issue) or use a disk recovery tool built into Windows if the drive was part of a previous Windows installation.

备注：内容来源于stack exchange，提问作者JohnJohn95