Data recovery adventures

I'm not a data recovery specialist, but I tend to help people out every now and then with computer problems, and sometimes you have to deal with a disk that doesn't seem to work anymore. This is a collection of notes I made after I got a new challenge. I had to resort to using testdisk and ddrescue. I've been testing a few tools, and read about more, but these were the tools I landed on.

IMPORTANT: I'm not an expert on this topic. Every additional moving of the needle can cause a harddrive to fail even harder. If your data is absolutely critical, use a certified data recovery service.

1. Is it replaceable hardware?

When I get a harddrive in a laptop or external enclosure, my first attempt is to see if there is something between computer and the disk. I try to remove the disk from the computer or enclosure and connect it to a USB3 to 4-types of P/SATA adapter I have bought years ago and has saved me multiple times. If it mounts, copy everything to another drive, to b…

Copying / syncing files over a local network with rsync

Just a short article to document for myself how to copy a large directory (e.g. a user-folder) over a local network. While (s)cp might work for smaller operations, rsync is my preferred tool as you can restart it when it breaks + in case you found an optimization, you can just abort and restart. Some things to take into account before I share the command:

• Do not mount a drive, just use ssh
• if you're sharing from macOS, make sure file sharing has access to the entire harddrive, otherwise some important folders will sync empty (e.g. Documents(!))
• Make sure you exclude files you don't need (a home folder typically contains many cache-files that you don't want to sync to a new machine
• Do not enable some form of compression (it waists cpu cycles when your network is fast enough)

So here is the command:

rsync -aWP --inplace --exclude-from=exclude-file.txt murb@someaddress:/Users/username/ .

Breakdown:

• -a is the archival option, and it is typically what y…