CentOS / Redhat: Chroot And Mount Raid Or Actual Hard Disk From Rescue Kernel / CD

Posted on in Categories last updated June 24, 2010

Something is wrong with my RHEL networking configuration so I booted using my ISPs remote rescue kernel mode to fix my system. How do I mount and chroot into actual installation to fix the problem? How do I boot from any Live Linux CD and chroot into /dev/sda1 or /dev/md0 to fix the problem or recover the data?

Ubuntu: Mount Encrypted Home Directory (~/.private) From an Ubuntu Live CD

Posted on in Categories last updated May 13, 2010

Recently my old desktop system crashed and I brought a new Ubuntu Laptop from Dell. To access my data from old hdd; I’ve attached my desktop harddisk using an external USB case. Now my old data is stored using external USB hard disk. How do I recover data from encrypted ~/.private home directory using an Ubuntu Live CD and copy it to existing laptop drive using known passphrase?

Linux Disable /var Access Time Updates ( noatime )

Posted on in Categories , , , , , last updated November 27, 2009

I‘ve configured and mounted /var for squid caching and other purposes under Linux. I’ve noticed that the Linux file system keeps records of when files are created, updated, and accessed. My /var is exclusively used for caching purpose and I do not want to waste disk I/O while updating last-time-read attribute during reads and writes to files. How do I disable access time updates for /var partition?