Recovery volume

A recovery volume, previously recovery partition, is a hidden section of a macOS or Mac OS X startup drive which contains software for macOS Recovery in case a user's installation of macOS or Mac OS X becomes corrupted or unbootable.
==Contents==
Stored as "Recovery HD", the contents are comparable to that of an installation DVD-ROM. If the recovery volume itself is damaged, the Mac will switch to Internet Recovery and download the software from an Apple server.Mac OS X Lion Adds Recovery Partition Support by David W. Martin, Cult of Mac. 2011-02-25.Revive and restore Apple devices, Apple Support. Accessed 2021-10-25.
The following utilities are included:How to reinstall macOS, Apple Support. 2021-10-25.
*Restore from Time Machine backup.
*Reinstall macOS (by default the version that shipped with the computer).
*Safari, a basic installation for browsing Apple Support.
*Disk Utility, to repair or erase a corrupted drive.
==History==
Mac Recovery Mode was first introduced in 2011 with Mac OS X 10.7 (Lion) and was stored in a hidden HFS Plus partition.How to use Mac Recovery Mode by Karen Haslam, Macworld UK. 2021-02-02. Starting with the introduction of APFS in macOS High Sierra (10.13) in 2017, the "Recovery HD" was stored in a hidden volume instead of a partition.Cloning Apple's Recovery HD partition, Bombich Software. 2020-12-12.
==References==
==External links==
*Reinstall macOS at Apple Support
**If Find My Mac is dimmed and you see 'Recovery system update required' (2016-11-10)
 
Category:Troubleshooting