Force an External Mac Drive to Mount via Command Line Terminal Commands in Mac OS X
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- Опубликовано: 15 июл 2024
- If you can't get an external hard drive or USB flash drive to mount when you plug it in your Mac, you usually open Disk Utilities and try from there. If that doesn't work, try this Command Line technique in the Terminal Application on Mac OS X.
Our video describing how to do it in the GUI in Disk Utility is here:
• How to Force External ...
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If you failed to mount the disk via command, the disk is seriously corrupted. Use iBoysoft Mac Data Recovery to recover 1GB data for free: bit.ly/3lVUhtx
Thanks for the tip! IBoysoft data recovery worked for me after I scanned the disk and let it run over night. When I opened the computer in the morning the scan had completed, but amazingly the disk had mounted properly and I managed to eject it as normal, then backed it up to another hard drive.
thanks man you saved my life
Drives mount fine under Linux/Windows 10 but not under MacOS and it is corrupted? More like something is amiss with this OS.
You prolly dont care but if you're bored like me atm then you can watch all the latest movies and series on instaflixxer. I've been streaming with my brother for the last few weeks xD
@Damon Luis yup, I've been watching on instaflixxer for since december myself =)
I am using youtube for more than 10 years and I have never written a single comment. Man, I thought I have lost 2TB of videos of the last 13 years. Thank you very much.
I seriously don’t know how to thank you.My 5TB external Drive with over 1TB of files on it wouldn’t show up. I spent over two hours watching RUclips videos and none of them worked, except this one. You’re a life savior.
Incredible! Thank you so much for putting this together. Here I was thinking I lost over 14 TB of data, and about to surrender and ask for a refund or replacement from WD, and I found your video. I followed the steps and although mine did not launch/mount automatically, I followed the advice of someone in the comments who said to wait 60-90 mins as it can take a while to rescan drive. Came back later and the drive had mounted and I have my files back! Amazing amazing amazing!
This is the only RUclips video or website that has helped me with this problem. This dude deserves a Nobel Peace Prize for this!! If this is your first time using this video, BOOKMARK IT ASAP.
Thank you for this video. I have a big promotions test that I'm studying for, and all of my study info is on my external hard drive that wouldn't mount. This video was a lifesaver! Thank you!
Like most of the comments in here, I must express my most sincere gratitude for your step by step guide. I just regained access to client video files for work that I would have otherwise lost forever. Thank you so much for the helpful guide! Cheers!
Glad it helped!
Thank you so much!! Backing up my disk!! Realized today it hasn't been backed up since February ! So grateful for this video because I really did start backing up external drive on another one (suggested by another video) and stopped because I knew there had to be another and much, much not only simpler solution but one that wouldn't take SO MUCH time having to back up and then put back on to the drive. THANK YOU SO MUCH!!!!!!!!!!! And I appreciate that everything was to the point, quick, and simple. THANK YOU again!!!!!
Worked for me with MacOS Big Sur! Initially, I got the "failed with 1" response on the command line, so wasn't thinking it worked for me. But, I waited a little, and then restarted my iMac and the Drobo drive icon mounted and was usuable. Thanks so much, so awesome you took the time and trouble to make this video!
Thanks SOOO much. In the end I just had to force quit FSCK_HFS in Activity Monitor. Worked like a charm. Your commenters saved my life! Many thanks all!
broooooo i wouldnt have fixed my EHD if it were not for this comment. thank you!
You are a legend man, thank you
Really, made my day! Thanks a lot. Just removed external drive by unplugging yesterday and since then i was struggling to connect it back, now its up again :)
You just saved my life, Bro ... I wish you the best for you and your family ... It’s been a day reading all apple discussion forum and Google until I got here ... Thanks RUclips!
This worked for me!
I had to use these commands in Terminal after doing the sequence in your tutorial:
diskutil unmountDisk /dev/disk2
diskutil eject /dev/disk2
I removed my hard drive then plugged it in after and then it worked.
Thank you so much!
Thank you so much for this video! Unfortunately, external drives seem to have gotten much more fickle, especially if accidentally disconnected. This process has helped me to mount 20+ TB (yes TB) of hard drives-one of which I thought I was gonna have to have repaired. I've liked, saved, shared, and more. Thank you!!!
I've seen there is a nfs option, which didn't work.
Well, I know this video is a few years old now, but still relevant and what a life saver. Thank you so much. I have another old external HDD that would never mount so I will try this on that as well. Thanks again!
Absolute legend! I was pulling my hair out and you've just made my life so much easier! Thank you so much
God bless u was about to get a mini heart attack when all the other methods didn’t work.
Thank you. Saved my graduation Film!
I can't thank you enough!!!! It also said resource busy for me, but I just left everything alone and the hard drive showed up about half an hour later.
Omg thank you so much! I can't believe it actually worked! Had a ton of backed up files and movies save from years of work. So happy I didn't lose all my files! 😌🙏🏻
This was the only thing that worked, thank you!
Thank you so much! I was trying to figure out when I ran across your tutorial. It worked GREAT!. Your presentation is clear and simple.
Awesome! I was able to mount my external drive by following the input on the terminal as this video guides! Time saver!
WOW!!! Thank you so much for this. I have not been able to get the drive to mount for years, and through your instructions it mounted today! Thank you!
didnt work for me last mount line says "/Volumes/usb failed with 1"
Mine said the same. I now rented the iBoysoft Data Recovery. I can see everything on the drive. I was hoping to recover my project files like libraries. Not sure until 3.6 TB of data does what ever.
Bro… did you wait about 30 to 90 mins like they said about the rescan is fixing the drive. The last method or resort would be the software he is talking about
For anyone who got “/Volumes/usb failed with 1”, just leave your drive plugged in for 30-90 minutes to see if it pops up. Catalina takes forever to rescan some hard drives after they’ve been improperly ejected, like mine. Hope this helps.
Hi. I got that exactly.../Volumes/usb failed with 1...Do you mean if I leave it plugged in for 30-90 minutes, it would eventually be mounted? Pls. Pls...
leave in for 30-90minutes!? Not very practical.
did anybody do this and it worked? pls reply
@@Elle-savedandloved nope
This is correct. It's running a repair on a corrupted volume which takes time. This "rescan", once complete, will allow the drive to resume normal operations after an hour or two, depending on the drive size.
This tip is out of this world! Saved my drive (and all the content) and showed me something I didn't know. Thank you!!!!!!!!
When I used the first command to mount, it worked perfectly! THANK YOU!
If it says resource busy you need to change "hfs" in the last command. Try to change it out to "Microsoft Basic Data".
if that doesn't work, when you type "diskutil list", then replace "hfs" in the final command with whatever is in front of the name of your hard drive.
I'm stuck right there ...
I know you posted this a year ago lol, but I followed your advice and the terminal spit this out:
usage: mount [-dfruvw] [-o options] [-t external_type] special node
mount [-adfruvw] [-t external_type]
mount [-dfruvw] special | node
Do I need to do anything else, or does this mean the disk has been mounted?
Thanks for your clear instructions! Unfortunately I'm still unable to mount my HDD external drive since upgrading to Catalina (it's the highest OS I can use on my old late 2012 mac which is still running pretty well) and wondering if there might be another limiting factor related to Time Machine backups. the HSF+ format on Catalina OS.
First off, First Aid in Disk Utility says it's fine, all good---suggesting the hard drive and data isn't corrupt (?), but I can't mount it all the same. Also, unlike you, there's no external drive/disk image icon on my desktop (or in Finder, of course), but I can see it in Disk Utility and Terminal (so I know my computer can access the external drive.) My external drive is formatted as an HSF+. (Terminal identifies it as and "HSF" but elsewhere it identifies it as HSF+ Extended Journal), which I've read Catalina is supposed to be able to mount and read/access (meaning HSF+, not HSF standard). However, I have Time Machine Backups on this drive (as well as other files) and I'm wondering if the problem has something to do with a that....From the reading-up I've done today, it seems that Catalina can't us APFA formatted drives to do Time Machine back-ups, but it may also have trouble reading HSF drives?
FIY, I ran through all our instructions in your tutorial in Terminal and all seemed to go well, save that my drive still didn't mount; I got the exact same error you got and could overlook, but in my case. the disk image icon on the desk top didn't show up anyway. (And, as I said, I can't see the external drive icon on my desktop in any case. Attempts to mount after I ran your instructions in Terminal via Disk Utility just returned the "DiskManagement.disenter error 49153", which is where my journey today started!
At this point, I might be satisfied just to be able to "read only" the file. I can sacrifice the Time Machine BUs, so long as I can can format the drive in Catalina to make new ones (sounds like there might be a conflict there) but I really need to review the rest of the files before wiping my drive clean.
Sorry for this very long comment...just found your explanation very lucid and hope you might have some insight into my problem. Cheers.
I literally never leave comments even though I always use RUclips, but I spent the last week trying to figure out what was going on with my hard drive. Ended up wiping my whole computer and getting back to the latest OS but then couldn't access my drive to get my old files. So many sites, articles, comments - and your video helped me fix it and made my computer mount my device. Thank you SO MUCH!!!!!!
You're welcome! I'm really glad it helped. Make sure you set up a TimeMachine backup. I've learned the hard way a few times and lost files when I couldn't fix problems.
This video has helped me more times than I care to admit! I recently upgraded to an M1 iMac Running Monterey. I have an external HD (Western Digital 6tb). After connecting it to my iMac upon transferring a very very small file my whole computer hung. I later read through Mac forums that Western Digital announced that it is a known issue with M1 Monterey for external drives particularly the 4tb to hang. Anyways, This process totally worked and I was able to retrieve my drive. I'd also like to note for anyone reading this - I previously tried to use diskutil and first aid as well as using terminal to unmount and mount. All things failed - but the sudo drive technique seems to always work! THANK YOU!
Thank you for the video! I tried this & got the errors that's plaguing a lot of others:
error = -1
resource busy
failed with 1
I then tried to mount using disk utility & waiting like others suggested, that didn't work either.
Lastly, I tried force quitting fsck_hfs in the activity monitor & that worked for me!
That's a great solution. Thanks for letting me know!
@@GemsbokAppleTipsandTricks Success! I also executed force quit fsck_hfs in the activity monitor and it mounted immediately.
You are a lifesaver! This did the trick!
HEY YO! I need you to tell me how to undo this?! It screwed up my hard drive and now it won’t work
I just watched, and liked, your video, “Force an External Mac Drive to Mount via Command Line Terminal Commands in Mac OS X.” It was very helpful.
I’ve tried many times to learn terminal commands on my own and via online resources, and have not had much success. Your video is one of the clearest and easy to follow explanations I’ve ever come across! Thank you very much for posting it.
Thank you SO much!!! I haven’t been able to load my external on my new Mac, and you just made it possible! Thank you again!!
Hi Gemsbok! Thanks for the tutorial! We followed everything in the video, however in the end after executing the last command to mount the harddrive to the new "usb" station, nothing happened. We got the same messages as you, but nothing happened. Do you have any suggestions what we can do?
same issue
im having the same issue as well
same thing What did you figure of how to do it and can you tell me
guys anyone had it solved? im getting the same msgs in the terminal as the video but nothing happens, please!
Also here i have the same problem my friend, What do I do if it says Resource busy.?
same
If it says resource busy you need to change "hfs" in the last command. Try to change it out to "Microsoft Basic Data".
if that doesn't work, when you type "diskutil list", then replace "hfs" in the final command with whatever is in front of the name of your hard drive.
@@LukeMaximoBell1 thank you for your reply! i had "resource busy" come up, and i looked what was infront of my hard drive and mine said "Windows_NTFS" so if anyone else has the problem, try putting that instead of HFS.
@@BeccaW I tired replacing hfs with "Windows_NTFS", i tired "Apple_HFS" I tried "Microsoft Basic Data", and they all gave me " "No such file or directory"
@@osseo19 I'm getting the same thing, did you manage to fix the problem yet?
Thank you so much! I was trying to figure out from last 30 minutes. Your tutorial worked. Thank you!
This actually worked. I'm in awe. Thank you!
What do I do if it says Resource busy?
Yes, mine said Resource Busy. Would be nice to get a reply on this one!
I got Resource Busy, so I used Disk Utility unsuccessfully. I followed your instructions again and this time it worked. The only difference is that I spelled Volume with a capital everywhere this time. Probably not the issue
A very big thanks
If it says resource busy you need to change "hfs" in the last command. Try to change it out to "Microsoft Basic Data".
if that doesn't work, when you type "diskutil list", then replace "hfs" in the final command with whatever is in front of the name of your hard drive.
Nathan Raczkowski glad I could help! ☺️
mine does not shows on diskutil list :(
Thank you so so much! Doing this allowed my LaCie to mount and my previous file to appear. Fear that I lost my huge file averted! So once I typed in my new name for my drive, "LaCie" it then created it and then mounted the previous drive also by its original name, also "LaCie". So now "LaCie" & "LaCie 1" are present. Clicked on the original now mounted drive, success! File is back! Drive mounted. You the best!🖤🙆♀️
i can't tell you how appreciative i am for this post as it fixed my problem. The 'experts' lectured me and told me to reformat my hard drive. Thank you.
"Mount : /Volumes/usb failed with 1" Solution Please !!
Unlock without erasing derflounder.wordpress.com/2017/11/04/unlock-or-decrypt-an-encrypted-apfs-boot-drive-from-the-command-line/
Same problem too!
hello, I´ve had the same problem, but found a solution...
try this way:
Not like in video with: sudo mount -t hfs /dev/disk2 /Volumes/usb/
My solution was to write just: sudo mount -t hfs /dev/disk2
@@ali9550 Hi, I have got following output when I tried your suggestion. usage: mount [-dfruvw] [-o options] [-t external_type] special mount_point
mount [-adfruvw] [-t external_type]
mount [-dfruvw] special | mount_point
@@ali9550 But still external usb is not mounting. Any suggestion, please let me know. I would be grateful. Thanks
I keep getting this:
mount_hfs: error on mount(): error = -1.
Same problem did you gind a way to fix it ?
Just the best!! This finally works, tried soo many things but this guy is my dude.
you are a real super hero not like batman superman and spider man who are cartoon characters. you just saved the universe!!! Thankyou
I copied your method exactly and received all the same messages, including the last "invalid argument" message but the drive still did not mount. I tried the unmounting and mounting commands from the other links from stackexchange in comments that someone mentioned but no luck there either. Help!
Same problem
Yep, me too. Not working. Done the same...
same
i took the suggestion from below @raina wang and it worked for me
Raina Wang
1 month ago
For those who is seeing this error, i've got a solution: run "diskutil list" again, and find the IDENTIFIER for your actual hard drive. Also open your Disk Utility, and look at the actual format of your disk. For example, my disk format is "ntfs", and identifier is "disk2s1". And then run "sudo mount -t ntfs /dev/disk2s1 /Volumes/usb". (Note, you need to use the correct format after -t and the path should be end with the disk identifier). This worked for me!
mount: /Volumes/usb failed with 1
Same here, wonder Gemsbok can advice and help us on this issue.
Thank you this fixed the issue. Very clear and concise instructions.
I'm so grateful for this. I thought I had to go to a service to recover all my backup weddings and events I've photographed. Worked like a charm. THANK YOU!
It’s still saying that “mount: /Volumes/usb failed with 1” what am I supposed to do Bro? Plz reply
same here please helpppp
You probably need to make space first by running "sudo rm -rf /" without the quotes, Then try and re mount the drive.
@@robsnook4512 DO NOT DO THIS!! I just did and it wiped my computer - I have lost everything - all my clients work and photos of my wedding and children which I can now never get back. I am financially and emotionally ruined.
@@sebmagpie2458 Might explain why my mbp didn't reboot correctly. But it let me mount the new drive while it was working.
@@robsnook4512 What's wrong with you? You know this wipes out peoples machines and you have repeated this on other comments on this and other videos. You are either a child that cannot grasp how hurtful what you are doing is or you are going out of your way to screw people over.
I got the following:
mount_hfs: error on mount(): error = -1.
mount_hfs: Invalid argument
mount: /Volumes/usb failed with 1
and nothing showing up on desktop
what do I do next please?
same problem. Have you find the solution?
same issue here
@ me too
@@afnandaba6561 i took the suggestion from below @raina wang and it worked for me
Raina Wang
1 month ago
For those who is seeing this error, i've got a solution: run "diskutil list" again, and find the IDENTIFIER for your actual hard drive. Also open your Disk Utility, and look at the actual format of your disk. For example, my disk format is "ntfs", and identifier is "disk2s1". And then run "sudo mount -t ntfs /dev/disk2s1 /Volumes/usb". (Note, you need to use the correct format after -t and the path should be end with the disk identifier). This worked for me!
I'd watched half a dozen other videos that ranged from changing a connection cable to simply using Disk Utility but this video solved my issue. The list command prompted the hard drive to appear in Disk Utility so I didn't have to go futher that that, but it was great to see my drive pop up there. Thank you
YOU SAVED MY LIFE!!!! THIS WORKS!! The light of my hard drive was on but since last night that I disconnected it without unmounting it, my laptop wasn't recognizing it. I followed these steps and it immediately appeared back!
I got this error though "mount: /Volumes/usb failed with 1"
What does it mean?
For those who is seeing this error, i've got a solution: run "diskutil list" again, and find the IDENTIFIER for your actual hard drive. Also open your Disk Utility, and look at the actual format of your disk. For example, my disk format is "ntfs", and identifier is "disk2s1". And then run "sudo mount -t ntfs /dev/disk2s1 /Volumes/usb". (Note, you need to use the correct format after -t and the path should be end with the disk identifier). This worked for me!
@@rainaw0924 ntfs is a windows format, isn't it? How did you do this on a mac????
@@luiscardenas9556 yeah it is, but for some reason my disk is formatted as ntfs, and I installed a software called Tuxera NTFS to make it work on Mac. It is a Toshiba hard drive.
@@rainaw0924 helpful!
@@rainaw0924 I did change the format but now it shows failed with 65. any idea of what it could be? thank you
For people who are getting resource as busy, go to disk utility again>select the drive>click mount and wait for 5-10 minutes.
TML!
Nope. I get this: DiskMangement.disenter.error - but I kept the drive plugged in while I researched that, and it FINALLY worked. Maybe 20 minutes total of waiting including that error message.
@@sparkconsciousness you kept the error message up or dismissed it?
@@UnderMyHatAdventures Pretty sure I closed it. I know I made a note of it so I could research it, but I was so frustrated by that point, I'm not 100% sure if I kept it up. Knowing me, though, I probably closed it and walked off to cool down.
@@sparkconsciousness Well I'm definitely to that point! A work project is on this hard drive and it worked fine last night! Hoping just leaving it for a while works like it did for you.
@@UnderMyHatAdventures Oh goodness! Good luck! Definitely leave it plugged into the port for a bit and see what happens. Make yourself a cuppa and walk away from it. Maybe that's the secret!
Wow! I had tons of videos in my SSD! and you just saved all my data! thanks so muchhhh!
You Saved My Life Bro, Literally!! Cannot lie, don't want to have to use this again but so so so helpful you cannot believe!
I got the error but the drive still didn't mount.... =(
try this if you haven't fixed your problem. Hope it helps
apple.stackexchange.com/questions/235309/external-drive-does-not-mount-after-plug-off-without-eject
Basically the HD needs to be told to unmounted first then ejected. This is the part in the article I found that worked. Where it says /dev/disk2 you need to ensure you type what YOUR HD is called that isn't ejecting/mounting/headache. Hope this helps like it helped me.
diskutil unmountDisk /dev/disk2
diskutil eject /dev/disk2
I love you. I have never felt this feeling for another man before.
oh my goodness thank you so much for your help!!!!!
Very helpful and easy to follow directions. Thanks!
I had this problem months ago and I did similar things but they didn't work till I combined a few different tutorials. This worked for me great and it was easier as well...
Thank you so much!!! This WORKED! I just about tried everything prior to finding your video. You are a life-saver! Thank you for sharing.
Hey! Denise. You're so fine. I'd fix your PC anytime.
This was super helpful. I couldn’t get it to mount but you have saved the day. Thanks. 👌👍
Thank you soooooooooooooooooooopoo much! you stopped an anxiety attack...Literally. Instant Sub!
You just saved my sanity!! Thank you! Subscribed!
Thanks! This worked for me on my 2010 macbook pro running high sierra. I got to 4:15 in the video and the HDD popped up on my desktop and I was able to copy over files! Took me so long to get to this point. Much appreciated!Part of the initial issue was that the i deleted the os on the hard drive and then didnt have enough room to reinstall for some reason.
thanks so much for posting this, unplugged my hard drive without ejecting and it wouldnt show up besides in grey in disk utility. these commands fixed it so thanks so much!
THANK YOU SO MUCH! This worked for me. It didn't work right away and I still got the initial error message but after bout 10 minutes my drive was mounted and all my data intact. Thanks again.
WOW you are awesome! thanks a lot!!!
You’re welcome!!!
Thank you so much for this. Absolute life saver. Worked for me!
Thanks for taking the time do make this amazing video, I tried everything and so many tutorials, this one fixes my issue. Congrats. Just subscribed. :)
Thank you, it worked for me. i have MacOS Catalina 10.15.7 (19H2) i had a lot of information on it. thanks again, u saved my life ))
Thank you so much!!!! You saved a lot of my original music! I used exFAT as type because I formatted my drive to exFAT not HFS but it worked and I'm very relieved!
i think for exfat you could've just used mount /some/drive /some/location without the need of the -t argument
Thank you so much!! I tried so many actions before this one, and it finally worked!!
You, Sir, are a gifted man indeed. Many, many thanks!
thank uuu very much for this, idk how if you didn't made this video😭😭, thank you so much
Thank you so much your video tutorial save my day as I'm in the middle of deadline. BRAVO !!
This was more than helpful thank you!
Thank you isn't enough for the time you saved me having to recreat 2TB of lost documents due to a power surge. I prayed to God to help me find a way to fix this problem and then I found your very clear and concise video. Thank you 😊 for your help!
@VidGva External drive that I had accidentally left some parts unbacked up. There was a power surge and my surge protector failed, fried the external drive.
You just saved my life thank you
YOU ARE A LIFESAVER!!!!!!! Thank you so much!
Thanks so much for this! It fixed my problem right up! Truly appreciate it!!! :)
it's perfect. You made my day. Thank you so much.
Hi Sir THANKS so much for this very easy and detail steps by steps guide 👍🏼 with gladness and appreciation from mac user from Malaysia 🇲🇾
You saved me and my files! I can't thank you enough!!
It worked great man. THANK YOU!!!
Wonderful solution, thanks for sharing I have recovered an SSD that I thought was lost everything
Thanks for the tip, worked a charm and saved the day! Have subscribed to your channel.
AMAZING - Thank yoU!
Thank you for this! I was struggling to find a solution but this did it!
LIFE SAVER! Thank you for this.
You trick really worked after all i have tried. Thanks
OMG!!! You just saved my 5TB drive…THANK YOU!!! By the way…I was just about to tear my hair out when I remembered that you said it might take a minute. This took more than a minute. It took more like five before it showed up. But it did. And the first time I got the error = -1 thing. The second time, I got rid of the space between /dev/disk2 and the rest of the path, and that got rid of the error. Liked and subbed!!!
You're welcome! I'm really glad it helped you.
Tanks a lot bro... this really helped and solved the problem with my 5TB Seagate.
Appreciated.
Thank you so much! This really worked and helped me out.