16 votes

Raspberry Pi WiFi to Ethernet Bridge for a server?

This is a common problem with tons of documentation on the web. A very informative discussion I've found on (1). Be aware that this problem only belongs to a wifi client connection that you want to ...
Ingo's user avatar
  • 42k
13 votes

Can Rpi4B power external / portable USB HDD / SSD?

not able to power ... from a Raspberry pi 3 Here's why: Pi 3 was designed with USB 2.0 specs, including the 0.5 amp limit. Most hard drives require more current than that. Raspberry Pi 4 has USB 3.0,...
Botspot's user avatar
  • 1,759
9 votes
Accepted

How to change permissions on external hard-drive connected to Raspberry?

You are probably not doing anything wrong. It seems to me that the real issue is that the instructions, as written, don't work generically. The point at which you are apparently stuck is the chown ...
Edward's user avatar
  • 961
9 votes
Accepted

Correctly partition 4TB drive with enclosure using Pi

There are a few things that you need to do to get this to work. First, after physically connecting the drive, run dmesg to see the name of the node in /dev. You should find something like this: [ ...
Rab's user avatar
  • 241
8 votes
Accepted

Boot from USB hard disk?

Now, nearly five years later after author originally asked this question, Raspberry Pi officially supports booting from USB mass storage device. However, this is supported only for Raspberry Pi 3. ...
Andrejs Cainikovs's user avatar
8 votes
Accepted

Will RPI3 power down an external USB hard disk if not used for a certain amount of time?

Yes. Here's what I use: hdparm -B 127 /dev/sda hdparm -S 242 /dev/sda From the command line as the pi user you would have to add sudo there. The first line enables spin down. The second one sets ...
goldilocks's user avatar
  • 58.7k
8 votes
Accepted

Is it safe to power my external hard drive with a Raspberry Pi 3 B+ USB port?

You SHOULD be able to power a USB HDD from the Pi3B+ as the USB ports can supply 1.2A. HOWEVER, I and others have found that this is often unreliable - this seems to be due to transient voltage drop ...
Milliways's user avatar
  • 59.5k
7 votes

Transmission: permission denied on USB disk

None of the answers here worked for me, so I am writing a new one referencing https://pimylifeup.com/raspberry-pi-torrentbox/ which worked great for me and allowed me to run transmission as pi user to ...
Sammaye's user avatar
  • 181
7 votes

Rpi can't see external hard drive

Based on your dmesg output, it looks like the hard drive isn't getting enough power. It's does the connection phase, and then starts the spin up process. Since this is the most energy intensive task,...
Jacobm001's user avatar
  • 11.9k
6 votes
Accepted

How to connect SATA drives without USB

Worth reviewing this answer on ee.se https://electronics.stackexchange.com/questions/118537/interfacing-with-sata-in-embedded-systems In short, not simple. In the most reasonable scenario, ...
crasic's user avatar
  • 2,983
5 votes

Max safe current and power requirements for Raspberry Pi 2 Model B?

The short answer is to use a powered USB hub to connect the drives to the Pi. TL;DR The Pi needs a 5 volt power supply. The Pi will only draw as much current as it needs so something between 1 and ...
Steve Robillard's user avatar
5 votes

Boot from USB hard disk?

Indeed, if you can live with just the SD MS-DOS partition (/boot) where the kernel reside, you can have /root and everything else on an external device. USB memory card or a physical hard drive are ...
fcm's user avatar
  • 1,839
5 votes

Attach SAS Drives

Before the Compute Module 4 came out, the answer was no; however, I'm currently testing an LSI SAS3082E-R SAS controller with the Compute Module 4 + IO Board, and I'm hopeful it will work. I'm ...
geerlingguy's user avatar
  • 1,616
5 votes
Accepted

"Proper" way to (permanently) mount USB hard drive?

using /etc/fstab is the proper way of doing this. if you do not want your system to depend on the drive on startup in case the usb drive is missing you have to set the relevant parameter / options ...
AlexOnLinux's user avatar
5 votes
Accepted

Powered USB3 Hub vs USB3 Y Power Cable

This answer is incorrect. Depending on model & OS USB can supply 1.2A. Typical Power Requirements I doubt it would work, according to this page: USB - port power limits the Raspberry Pi USB ...
ON5MF Jurgen's user avatar
5 votes

Can Rpi4B power external / portable USB HDD / SSD?

Answer If your Rpi4B's power supply meets the official spec of 3A output, then it is OK to use USB HDS/SSD without external power supplies. I measured the idle current and write current of a 1TB SSD,...
tlfong01's user avatar
  • 4,665
5 votes
Accepted

Permission denied to access `/media/pi` folder

This happens because you have mount helpers which mount the storage devices with the identity of the user holding the current session on your machine. If you have a GUI and log in as pi, that's the ...
Dmitry Grigoryev's user avatar
5 votes

2,5" USB external hard drive not detected

Plug the disk and run sudo dmesg: There should be lines related to the USB host driver. If there aren't any, either the USB port, or the cable or the disk is broken, to the point there is no reliable ...
Dmitry Grigoryev's user avatar
4 votes

NTFS USB HDD Read-Only - How to enable write permissions

I just wanted to share my experience on using the current version of ntfs-3g installed with apt-get install ntfs-3g (version 1:2014.2.15AR.2-1+deb8u2). I was getting "Input/output error" using that ...
Ricardo Pereira's user avatar
4 votes
Accepted

Keyboard and mouse stops working after connecting usb hard drive

Just like most other issues with the Raspberry Pi, this is most likely a power issue. Make sure you are using a short and thick USB cable. And a supply that provides at least 5V at 1A, but I highly ...
Patrick Cook's user avatar
  • 6,365
4 votes

Raspbian won't boot when hard drive is connected

This is (like most questions involving weird behavior of the Pi) a power supply issue. Make sure you have at least a 1.2A 5V power supply for your Pi, and that may not even be enough, you may want to ...
Patrick Cook's user avatar
  • 6,365
4 votes
Accepted

Unable to mount external harddrive (Openmediavault)

Because you state that your Pi is the original model b and that another external hard drive also does not work I believe that you are experiencing a power issue. The original model b raspberry Pi ...
Mohammad Ali's user avatar
  • 2,383
4 votes

Can Raspberry Pi draw power FROM an external HD?

I'm going to provide a few details on why it is not recommended to do this. You completely bypass the protection circuit. the RPi has several components on the power socket, such as the polyfuse F1 ...
Dmitry Grigoryev's user avatar
4 votes
Accepted

How to use external flash drive as raspberry pi 3 root storage?

You can put your filesystem on an external drive, there are instructions to use an external drive to boot your Pi. See https://www.raspberrypi.org/documentation/hardware/raspberrypi/bootmodes/msd.md ...
Milliways's user avatar
  • 59.5k
4 votes
Accepted

How Can My Raspberry Pi 3 B+ Power All My Devices?

The Pi3B and Pi3B+ USB can supply 1.2A without modification (subject to an adequate PSU). Your question has a lot of incorrect assumptions about USB - this is all explained in Raspberry Pi Power ...
Milliways's user avatar
  • 59.5k
4 votes

Using /mnt vs /media for Transmission storage on external hard drive

The default names and structure for linux are defined in the Linux Standard Base (LSB). Part of this document is the Filesystem Hierarchy Standard. Herein you find the definition for /media : Mount ...
Ingo's user avatar
  • 42k
4 votes

Is it safe to power my external hard drive with a Raspberry Pi 3 B+ USB port?

Having graduated with honors from the school of hard knocks last night with a PhD in low voltage faults corrupting root partitions on a pi, I would advise against this. It appeared to work fine with a ...
David Dohm's user avatar
4 votes
Accepted

Pi with multiple HDDs from a powered hub

Will the read speed of each hdd drop the more hdds I add due to the pi usb controller? This is exactly what will happen. Connecting multiple HDDs (and the more so SSDs) to an RPi to increase disk ...
Dmitry Grigoryev's user avatar
4 votes
Accepted

How to connect a SATA disk through GPIO (not USB)

I don't see how this can be done. Even if it could it would probably be a serious waste of time and money. SATA uses GHz signalling. The Pi's GPIO function in the say 30Mhz range. https://en....
joan's user avatar
  • 70.9k
4 votes

Delete and modify not supported smb external drive (exfat)

It seems you have an answer that addresses your question. I'm posting this as potentially "another answer" to augment @Ephemeral's answer, and because it's something that may be overlooked ...
Seamus's user avatar
  • 21.7k

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