Author Archives: Randy

Windows Vista through Windows 10 Boot Repair

After cloning a larger HDD to a smaller SSD, you will most likely face a blinking cursor or other boot issues.   The following steps should get you back on track from a rescue command prompt: bootrec.exe /fixmbr bootsect.exe /nt60 all /force bootrec.exe /rebuildbcd If you are getting integrity check errors on winload.exe, you can try […]

GL-MT300A tricks – WIFI Client Bridge

In a search to replace several NetGear WNCE2001 devices which had over time, proven themselves to be so unreliable they would literally kill entire wireless AND wired networks by randomly hijacking DHCP. I tried many devices — some either couldn’t bridge at all, others ‘worked’ but had such terrible range or connection quality they were […]

Enable megasas2.sys Critical Mass Storage Driver

This reg key will enable the ability to boot from MegaRAID storage devices using the megasys2.sys driver. Useful to run before hand when upgrading or otherwise changing hardware to something with a LSI 9260, 9271 or similar card. This reg key REQUIRES that you already have the correct megasas2.sys driver installed one way or another. […]

OpenVPN Slow Downloads on Windows clients

Recently I upgraded my remote office connection to 100Mbps (cable) and spent almost a month dealing with slow downloads over an openVPN client connection. Uploads were fine (maxing out the pipe) but downloads were 12-20 Mbps at best and fluctuating like crazy. TCP client mode actually performed better than UDP so I knew something was […]

Debian PXE boot image from scratch

After facing issue after issue with Idera/R1soft’s PXE and CD-ROM boot media — specifically, ancient kernels which are unable to obtain network connectivity on modern hardware, I decided to roll my own PXE boot image including the R1soft agent and a few other tools with the latest Debian stable. It turned out to be easier […]

Grub with Xen Guests

In order for grub to ‘see’ virtual disks, you have to tell it about them with the ‘device’ command: # grub grub> device (hd0) /dev/xvda grub> root (hd0,0) grub> setup (hd0) grub> quit Keep in mind, installing grub on the MBR is not always necessary with Xen PV guests, but is highly useful for V2P […]

XenServer 6.2 with Software RAID

Historically XenServer does not support software RAID out-the-box, and this is unchanged in the latest 6.2 release. We can convert it to RAID after installation. First we set up the 2nd disk by copying the partition tables whilst enabling a degraded RAID on it, then copy data over with custom initrd. sgdisk -R/dev/sdb /dev/sda # […]