# Lab OS-2: Recovery and Disk Information

Domain:
- 1.0 Operating Systems

Works on:
- Windows
- Linux

Does not require:
- macOS

## Goal

Practice safe commands that help identify recovery status, file corruption, boot configuration, and disk layout.

## Windows Steps

Run:

```powershell
reagentc /info
sfc /scannow
bcdedit
```

Optional repair command:

```powershell
DISM /Online /Cleanup-Image /RestoreHealth
```

Record:
- Is Windows RE enabled?
- Did SFC find integrity violations?
- What boot loader description appears in `bcdedit`?
- Did DISM complete successfully, if you ran it?

Do not edit BCD settings in this lab.

## Linux Steps

Run:

```bash
lsblk
df -h
```

Record:
- Main disk name:
- Root filesystem:
- Root filesystem free space:
- Any mounted removable drives:

## What You Should Learn

- `reagentc /info` checks Windows Recovery Environment status.
- `sfc /scannow` checks and repairs protected Windows system files.
- `DISM /Online /Cleanup-Image /RestoreHealth` repairs the Windows image/component store.
- `bcdedit` displays boot configuration.
- `lsblk` shows disks and partitions.
- `df -h` shows mounted filesystem usage.