What Is the System Volume Information Folder?
The hidden System Volume Information folder on every drive, what fills it, and how to shrink it safely.
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System Volume Information sits at the root of every drive and belongs to Windows itself: restore points and shadow copies first, plus the indexer database, link tracking, quotas and chkdsk fragments depending on the machine's roles. USB sticks get one too.
Explorer denies even administrators because the ACL grants only SYSTEM, which protects restore data from well meaning damage. Never take ownership or delete inside by hand. Shrink it through System Protection settings, Disk Cleanup's restore point option, or vssadmin commands. Disabling protection never removes the folder; Windows recreates it and keeps non restore data there.
Where Windows stores this, by platform
C:\System Volume Information
Exists per drive as X:\System Volume Information (NTFS view needs protected OS files shown plus SYSTEM rights; FAT32 USB sticks may open directly). Manage via sysdm.cpl System Protection tab, cleanmgr restore point cleanup, or vssadmin delete/resize shadowstorage. Never delete files inside by hand.
Frequently asked questions
Why is access denied to System Volume Information even as admin?
By design. The ACL grants only NT AUTHORITY\SYSTEM so nothing disturbs restore points and shadow copies. Forcing ownership with takeown can corrupt them, so use the supported tools instead.
How do I safely free space used by System Volume Information?
Open System Protection settings to lower the quota or delete points, use Disk Cleanup's system files option, or run vssadmin delete shadows and vssadmin resize shadowstorage. Oldest points purge automatically once the quota fills.
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