https://wiki.jeremybryansmith.com/index.php?action=history&feed=atom&title=Making_Block_Devices_Read_Only Making Block Devices Read Only - Revision history 2026-05-31T18:45:15Z Revision history for this page on the wiki MediaWiki 1.45.3 https://wiki.jeremybryansmith.com/index.php?title=Making_Block_Devices_Read_Only&diff=380&oldid=prev Jeremy: Created page with " Making block devices read-only (and read+write): To make '''<tt>/dev/XXX</tt>''' read-only using the '''<tt>blockdev</tt>''' command: blockdev --setro /dev/XXX To make '''..." 2021-02-11T20:13:53Z <p>Created page with &quot; Making block devices read-only (and read+write): To make &#039;&#039;&#039;&lt;tt&gt;/dev/XXX&lt;/tt&gt;&#039;&#039;&#039; read-only using the &#039;&#039;&#039;&lt;tt&gt;blockdev&lt;/tt&gt;&#039;&#039;&#039; command: blockdev --setro /dev/XXX To make &#039;&#039;&#039;...&quot;</p> <p><b>New page</b></p><div><br /> Making block devices read-only (and read+write):<br /> <br /> To make &#039;&#039;&#039;&lt;tt&gt;/dev/XXX&lt;/tt&gt;&#039;&#039;&#039; read-only using the &#039;&#039;&#039;&lt;tt&gt;blockdev&lt;/tt&gt;&#039;&#039;&#039; command:<br /> blockdev --setro /dev/XXX<br /> <br /> To make &#039;&#039;&#039;&lt;tt&gt;/dev/XXX&lt;/tt&gt;&#039;&#039;&#039; read-write using the &#039;&#039;&#039;&lt;tt&gt;blockdev&lt;/tt&gt;&#039;&#039;&#039; command:<br /> blockdev --setrw /dev/XXX<br /> <br /> To make &#039;&#039;&#039;&lt;tt&gt;/dev/XXX&lt;/tt&gt;&#039;&#039;&#039; read-only using the &#039;&#039;&#039;&lt;tt&gt;hdparm&lt;/tt&gt;&#039;&#039;&#039; command:<br /> hdparm -r0 /dev/XXX<br /> <br /> To make &#039;&#039;&#039;&lt;tt&gt;/dev/XXX&lt;/tt&gt;&#039;&#039;&#039; read-write using the &#039;&#039;&#039;&lt;tt&gt;hdparm&lt;/tt&gt;&#039;&#039;&#039; command:<br /> hdparm -r1 /dev/XXX<br /> <br /> Changes will only be temporary. The device will revert to read-write mode upon a reboot.</div> Jeremy