Site TIPS PAGE🔎 SEARCH  Ξ INDEX  MAIN MENU  UP ONE LEVEL
 OJB's Web Site. Version 2.1. Mac Tip.You are here: tip tips mac owen2 
Tip

Up to OJB's Mac Tips List

Bad Block Scan from Terminal

How to do a bad block scan of a volume.

This reads the whole disk and reports any (hardware) errors found.

List available disks: diskutil list
Find the ID of volume to be scanned in the list, eg /dev/disk2

Enter this: sudo fsck_hfs -dylS DISKID
Example: sudo fsck_hfs -dylS /dev/disk2s2

Meaning of options...
d = output debugging info
y = assume a yes response to all questions
l = live fsck (lock down and test-only)
S = Scan disk for bad blocks



I usually write a blog post about once a week. The latest post can be viewed here: Manufactured Outrage: We might be beginning to win some battles, but the war is far from over. (posted 2024-12-17 at 19:19:15). I do podcasts too!. You can listen to my latest podcast, here: OJB's Podcast 2024-12-04 Avoid Microsoft: If you don't really like computers much you could make things a bit better for yourself..
 Site ©2024 by OJBWeb ServerMicrosoft Free ZoneMade & Served on Mac 
Site Features: Blog RSS Feeds Podcasts Feedback Log07 Jun 2024. Hits: 203,674,322
Description: Mac TipKeywords: Macintosh,Computers,Fixing Problems,TipsLoad Timer: 11ms