Questions tagged [backup]

Making copies of data so that the copies may be used to restore the original after a data loss event, or for historical retention.

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172
votes
18answers
398k views

What utility can move my Windows boot partition over to another hard drive? [closed]

Can anyone recommend a cheap/free utility that can do this without very much effort? My preference is that it would be really easy. Boot into Windows Pick drive to move Pick target drive It copies ...
119
votes
11answers
386k views

Does an equivalent of Time Machine exist for Windows? [closed]

A simple Google search for "Time Machine for Windows" results in a flurry of different little apps. But instead of relying on forum anecdotes and advertisements, I call on the much wiser Super User ...
79
votes
4answers
37k views

Why is piping 'dd' through gzip so much faster than a direct copy?

I wanted to backup a path from a computer in my network to another computer in the same network over a 100 Mbit/s line. For this I did dd if=/local/path of=/remote/path/in/local/network/backup....
59
votes
15answers
37k views

What medium should be used for long term, high volume, data storage (archival)?

This question was inspired by https://superuser.com/questions/374386/how-to-store-and-preserve-lots-of-data. There have been other similar questions, but none with the same criteria. This is two ...
52
votes
9answers
81k views

How much time until an unused hard drive loses its data?

Do you guys know how much time needs to pass until the data stored on a hard drive starts to degrade? To keep the data intact for long periods of time, I heard you need to periodically rewrite it on ...
51
votes
15answers
11k views

How to store and preserve lots of data?

I have many DVDs with movies and games, they are getting old and dusty, some of them are damaged. And I have more than 300 GB of general files in my PC. I want to store and preserve all of my data and ...
48
votes
22answers
8k views

Software to backup data and files on a Windows computer [closed]

I have data and files on my system, running Windows, and want to make sure that I don't lose all the data or information when it gets toasted, either by a power surge or corrupted medium. I've heard ...
46
votes
6answers
97k views

Good block size for disk-cloning with diskdump (dd)

I use dd in its simplest form to clone a hard drive: dd if=INPUT of=OUTPUT However, I read in the manpage that dd knows a blocksize parameter. Is there an optimal value for the blocksize parameter ...
43
votes
6answers
60k views

How do I use 7-zip to backup files, but exclude some directories

I would like to use 7-zip to backup a directory, but I would like it to exclude all directories named ".svn" (anywhere in the source tree). Does anybody know if this is possible and in that case how?
42
votes
9answers
171k views

How to change iPhone backup location on Windows?

iTunes creates quite a big backup directory on my C: drive whenever I back up my iPhone. Is there a way to tell iTunes to back up the iPhone data to another location?
42
votes
3answers
12k views

How to automate regular Google Takeout backups to cloud storage

I would like to create regular Google Takeout backups (let's say every 3 months) and store them encrypted in some other cloud storage like DropBox or S3. It does not have to be a cloud-to-cloud ...
41
votes
5answers
8k views

Is there a method of getting a percentage on a DD in linux?

So here's what's happening. I started a backup of a drive on my server through a Linux live USB. I started copying the first drive with the dd command vanilla; just sudo dd if=/dev/sda of=/dev/...
40
votes
2answers
76k views

What does dd conv=sync,noerror do?

So what is the case when adding conv=sync,noerror makes a difference when backing up an entire hard disk onto an image file? Is conv=sync,noerror a requirement when doing forensic stuff? If so, why is ...
40
votes
1answer
43k views

Does built in Windows 7 backup perform differential (incremental) backups?

I have win 7 scheduled to backup every Sunday, it's only looking at one of my drives at the moment and is backing up to an external HDD. It's a 1TB drive so should take quite a while to fill but the ...
38
votes
6answers
33k views

How to do rsync-like encrypted backup?

I want to save a backup of my data on a remote server, but never want the backup server to see the data unencrypted. Editing a single file and backing up should not result in everything being ...
37
votes
6answers
43k views

How to view time machine log in MacOS Sierra?

In previous version of OSX, I was able to view the results of past Time Machine backup jobs thus: sudo syslog -F '$Time $Message' -k Sender com.apple.backupd Now syslog is no longer part of the ...
34
votes
6answers
20k views

Backing up Google Chrome

Having recently switched to Google Chrome, I was wondering what files and directories I should be including in my backups to make sure that bookmarks and history are included. Along the same lines, ...
33
votes
7answers
92k views

Copy directory contents using 'cp' command

How do you copy all the contents of one directory into another? For example: $ cd /home/newuser $ cp -a /backup/olduser/* . The problem with the above is that the globing pattern '*' matches the ...
31
votes
14answers
98k views

How do I export the history of Skype?

Is it possible to export Skype v4 chat history into some readable plain-text format? (.txt, .xml, .html) Alternatively, is it possible to backup/restore skype chat history? (I wouldn't mind backup to ...
30
votes
2answers
133k views

ROBOCOPY command to do an incremental backup

I am overwhelmed by the ROBOCOPY documentation. I want to do an incremental backup of my local files to the network drive (M). I want it to run as quickly as possible, with no log file and with as ...
29
votes
7answers
17k views

How to delete all glacier data?

I was using a tool on Mac OS X called Arq to backup my data, but i found it so hard to upload all my stuff since I don't and can't have an internet connection that is fast enough for it. So I decided ...
28
votes
6answers
31k views

How to restore Chrome without “Restore” button and the files “Last Session” and “Last Tabs”?

I was using Chrome halfway when the computer crashed. Usually if I restart and re-run Chrome, there would be a Restore button to recover my lost Chrome session. However, I restarted in Safe Mode, and ...
27
votes
5answers
5k views

Is it safe to use a HDD while rsync is running?

I plan to backup my large HDDs by rsync, and anticipate that it takes a few days. Is it safe to use the original HDD (adding files) while rsync is working? Or it is better to leave the HDDs untouched ...
26
votes
13answers
8k views

Long-term backup storage media

Rumors say CDs and DVDs won't remember your data longer than ten years. Are there backup media that do better?
26
votes
4answers
46k views

How do I backup a git repo?

I am planning to switch from SVN to git. With svn I just copy my repo folder when I want to back it up. However git doesn't have one so what do I do? Should I create a clone on a separate drive and ...
24
votes
7answers
6k views

What's the point of having a RAID 1 configuration over incremental backups to a secondary drive?

I have a synology NAS and I don't understand the point of RAID 1 system. Why bother having a mirror? If I delete a file by accident it's deleted on both drives.
24
votes
10answers
11k views

Google Docs: How to backup periodically?

How do I periodically backup my entire online documents in Google Docs? I am looking for a tool that can download the documents to my PC. I do not need any kind of two-way synchronization, just plain ...
24
votes
3answers
17k views

How to rename a BTRFS subvolume?

I have a BTRFS filesystem with a set of subvolumes in it. So far so good. I need to change the name of a subvolume, unfortunately the btrfs program does not allow me to rename a subvolume. Searching ...
23
votes
5answers
33k views

Is there a copy-and-verify command in Ubuntu/Linux?

I back up all my digital photos to a couple of places. I've been using the cp command, but--given the personal value--have started to wonder if there's a more reliable way. I'm no stranger to Linux, ...
23
votes
1answer
28k views

Thunderbird: export email account settings

I'd like to create a new profile for Thunderbird using the same mail accounts I already configured in my old profile. As it is quite a number of accounts, it would be great to have a way to export/...
22
votes
12answers
2k views

What is a good backup strategy for home? [closed]

We have about four computers. What is a good strategy for making sure our data is always backed up?
21
votes
6answers
39k views

Does rsync --inplace write to the entire file, or just to the parts that need to be updated? (for btrfs+rsync backups)

I was reading several guides how combine btrfs snapshots with rsync to make an efficient backup solution with history. However it all depends on if rsync --inplace modifies only those portions of ...
21
votes
7answers
23k views

Verifying Time Machine backups

I'm preparing my system for a Snow Leopard upgrade, and I prepare for the worst case scenario: full reinstall and restore. I would like to verify that my Time Machine backups are valid, and will ...
20
votes
4answers
13k views

How to backup (WSL) Linux Subsystem for Windows 10, before system reset or reinstall?

My problem is that I have to reset or reinstall windows because of some problems but I spent a lot of time to configure WSL for development and don't want to lose it. Is there any way of backing up ...
20
votes
7answers
84k views

Windows Backup failed with error 0x807800C5

I setup backup of my Windows 8 laptop with Windows 7 File Recovery (known as Backup and Restore in Windows 7). Backup of files runs successfully. But if I try to create system image, it fails with ...
19
votes
4answers
21k views

I need a simple way to backup files to Amazon glacier from the command line?

I have a CentOS server online with a directory of cPmove files I need to back up to Amazon Glacier. I only have command line access, no GUI. I need a command line client that is relatively easy to ...
19
votes
4answers
24k views

What is backup mode in Robocopy

I am trying to copy a large database backup file over network. The traditional program copy or xcopy failed with different binary resulted. Also tried robocopy without parameter, and resulted a ...
18
votes
27answers
2k views

Time Machine vs Source Control?

Finally got convinced to start using some kind of version control for my code instead of zipping down a copy of the project at the end of each day. Downloaded Tortoise SVN and used it to create a ...
18
votes
13answers
760 views

How to test your backups against medium degeneration?

Because most storage media degenerate over time (CD, DVD, harddisk, tape), it is very important to test your backups. Is there a way to monitor the condition of your backups? I am looking for both ...
18
votes
2answers
33k views

Backup Picasa 'people' tags data

OK, so I've spent a fair amount of time putting names to faces in Picasa 3.5 but in a few days (hopefully) my copy of Windows 7 should arrive and I'll need to reinstall Windows. So, does anyone ...
18
votes
3answers
6k views

How to avoid losing all my files when my Dropbox syncs to a compromised Dropbox account?

So I am trying to find a way to prevent a possible Dropbox doomsday scenario. Say someone gets my dropbox login credentials. They log into the Dropbox web interface as me. They delete all my files. ...
18
votes
2answers
20k views

Why is Crashplan so slow to upload my computer's files?

I just installed Crashplan on my MBP running OS X Lion. Crashplan is extremely slow in uploading all my files. Sitting overnight, it only has backed up about 4GB out of 450GB. Crashplan itself shows ...
17
votes
5answers
8k views

How to copy a btrfs filesystem

How can make a full copy of the contents of a btrfs filesystem? By full copy I mean not only the current data, but also different subvolumes with their snapshots, ideally preserving their CoW ...
17
votes
4answers
25k views

Incremental backup with 7zip

I have googled and searched, but can't find the command that 7zip command line utility uses for making incremental backups. So can someone please share the command ? Thanks btw I found this link: ...
17
votes
3answers
3k views

How does one go about backing up older CD-ROM games from the 90's?

I have a bunch of those point and click adventure games from the 90's (my youth) like Pajama Sam, Putt-Putt and Spy Fox. These CDs are becoming old and scratched. Being that these were such a ...
17
votes
4answers
8k views

Finding files with BTRFS Uncorrectable Errors

I have a question concerning unrecoverable errors on a BTRFS file system. Specifically, I've run a BTRFS Scrub recently after experiencing a problem with one of my RAM sticks and it seems to have ...
16
votes
5answers
48k views

How to copy Cyberduck bookmarks to another MacBook?

Got a new MacBook, how can I copy Cyberduck bookmarks from my old MacBook?
16
votes
4answers
18k views

Can I use rsync for backing up at Amazon S3

I have bought some space from evbackup which provides me FTP, rsync and SSH. But I have also read that Amazon S3 can also be used to backups. So I am really confused that do Amazon give FTP access ...
16
votes
3answers
5k views

How to decode/decipher Mozilla Firefox proprietary .jsonlz4 format? (sessionstore-backups/recovery.jsonlz4)

I'm trying to get a handle on Mozilla Firefox's proprietary file format .jsonlz4, used, for example, for sessionstore-backups/recovery.jsonlz4, but to no avail. How do I get back my data, ...
16
votes
1answer
12k views

Are Time Machine backups incremental? And is Time Machine any better on Snow Leopard?

I would like to understand how Time Machine backups work and has this been made any better in Snow Leopard?