Update: 5/3/17 — Add additional notes for CentOS7 (dracut + grub2) and XenServer targets All commands are run on new server. 1. Boot into rescue mode (iso, pxe, ect). 2. Create partitions with ‘fdisk /dev/sda’. Type 83 for non-RAID fs, 82 for swap, type fd in the case of RAID (all partitions). Flag boot partition […]
A quick non-destructive test of disk write performance on Linux. Useful for testing cheap HDD’s (write will almost always be worse than read): dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync
The following will copy two disks, partition table and all, with forensic quality, and pad the destination disk with zeroes if any data is unreadable on the source disk. Be sure you’ve identified which disk is which using combinations of dmesg and ‘fdisk -l’. The destination disk must also be equal or greater in size. […]
Make forensic-quality copies and backups of any type of media using free software.
FreeBSD is great for certain tasks (such as firewalls and other embedded devices), but has some real shortcomings when it comes to booting from attached or remote storage. This severely complicates the installation process in some cases. In my case, I have a remote server in a rack with no CD-ROM. Pulling the server from […]