Ubuntu Installation :: Cannot Boot From External Hd On A Mac
May 25, 2011
I have been trying for many days now to get ubuntu installed on western digital passport 1 TB USB external hd attached to my MacBook Pro (with intel Duo Core processor). I have installed the latest ubuntu 11.0.4 64-bit (needs to be 64-bit for work) on the external USB hd, and when I reboot rEFIt shows a new penguin icon. So, I selected that, and I see a screen with a penguin in the middle for a while, but then the screen turns black and just has a text error message that says "No bootable device -- insert boot disk and press any key". BTW, I checked that my Duo Core is definitely 64-bit. Also, ubuntu does run off the install CD. Even the wireless works and I can use firefox.
I have been reading lots of forums trying to find a solution. A couple that I have tried: 1) reboot and when in rEFIt, choose the sync option and resync the drives. I did that and now the penguin icon just launches a black screen with a different message about "no valid operating system" or something like that. 2) Another site said the key was to change where boot loader got installed, so during the installation, at some point near the end, there would be an "Advanced" button to click on, and in there I could set grub to install onto sdb, the location/name of my external USB hd. However, in the present version 11.0.4, there is no "Advanced" button on any of the install screens.
I really wish Mac just used a BIOS instead of this frustrating EFI. Do I need to edit or alter something somewhere? If so, exactly what?
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Mar 2, 2010
After installing ubuntu 9.10 on external HDD I cannot boot vista if external usb is unplugged(where ubuntu is installed). it says grub loading and after that recover grub ( i think that is what is says ... not certain in this moment ) anyway hope you get my dilemma. If you need more information I'll be glad to provide it.
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Oct 23, 2010
Can Ubuntu install and boot from external HD while still booting windows off internal HD?In an attempt to spread Ubuntu my friend wants to use ubuntu off an external HD and still have windows fully operational on the internal HD. Questions:1) Can Ubuntu install on external HD without tricky mounting methods and if so how doabout it?2) The bois have the capability to boot from usb, will grub work?
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Apr 15, 2010
After removing the Windows HDD from my laptop I installed Ubuntu to a new HDD that I installed in it - it works fine when used as an internal drive. But now I have put the Ubuntu disk in an external enclosure and replaced the original Windows HDD internally.
Now, if I change the BIOS boot priority to CD/DVD -> USB HDD -> Internal HDD will it be the case that I can boot Ubuntu when the external HDD is connected and Windows when not?
Also, if I boot to Unbuntu from the external HDD, will the internal Windows drive be left untouched? I'll be in pretty hot water at home if I damage that!
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Nov 13, 2010
I Installed Ubuntu 10.10 on an external USB Disk Drive - I had chosen to install the boot loader on this drive. When I tried to boot from this drive, I get the the following message:
error: unknown filesystem
after that I get "grub rescue>" prompt
The install was done on /dev/sdb2
I have also tried update-grub using ubuntu 10.04 that i have on my internal drive. It did recognize that I had a kernel on the external drive but still no luck booting. This time i get.
error: no such device d4a3cb16-37b6-416c-a3bc-4f8d03318e28
error: unknown file system
error: you need to load the kernel first
Note that the long device name is the same as the mount point when i do a "df"
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Jan 20, 2011
I boot Ubuntu10.10 from live cd and installed to my external hdd (thats Apacer AC601) . Installation completed but i cant boot from external hdd. i didn't create custom partition layout myself , I choose the option "use entire hdd". Everythings fine with Fedora core 14.
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Feb 28, 2010
I just recently installed ubuntu. I had always used windows before, and I wanted to try something different. My laptop's internal HDD is pretty full so I decided to install ubuntu on my 500gb external HDD. It is connected via USB A to USB B. So I run through the installation no problems at all. I partitioned 200gb of the external HDD for ubuntu. After install I could run ubuntu just fine and I really like it.
However now it boots through GRUB. I am not really sure what GRUB is but it says GRUB loading every time I boot up and then lets me choose what os to boot, but if I do not have my external HDD plugged in then GRUB fails to start and I cannot boot at all from my laptop. Is there a way that I can get it to boot windows from the internal HDD without having the external HDD?
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Mar 13, 2010
I was wondering wether it is possible to boot an eee 901 from an external usb cd drive? (for those who are unfamiliar with the eee, it has no internal cd drive) The cd drive is not listed in the bios boot menu.
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Aug 14, 2010
I installed Ubuntu to an external hard drive and I wanted it to be a portable OS I could take with me and still maintain my settings and files and what not. My problem now is, I cannot boot into Windows without having the USB drive connected. I also cannot boot directly to the drive by selecting the USB drive from my boot options on start up, I have to let it go into the boot menu.
So I need help with being able to boot directly from the USB drive on any computer, and being able to boot into Windows without having the USB drive plugged in. Hopefully this can be done without re-installing Windows.
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Aug 29, 2010
I installed ubuntu 10.04 on external usb hdd after having the internal drive disconnected. When now I try to boot i can only do it from the internal. I can see the external when in ubuntu, but no booting. Also I can see the external in the internal grub menu but when booting disappears. I suspect that it has to do whith the designation of volume names, when installing from external the disk is named sda1 but in the internal grub is sdb1. How can I change the name to sdba1 in the external grub
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Jan 3, 2011
I just installed maverick netbook edition on an external hard drive, creating my own partition table. When I tried to boot the drive, grub rescue mode told me file not found. I installed again and used the default partition table and got the same error. I gave up and tried to boot my fedora 13 internal hdd but was told that there was no such device. I looked through these forums and ran a bootloader script and was told that my internal hdd had a bootloader but my external didn't. I tried to load the kernel through grub rescue, but the file system was unknown to grub. The files are still on my internal drive and I don't want to reinstall just to boot it.
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Jun 30, 2010
The thing is i want to have windows xp on my internal drive and ubuntu on the external. Not very hard but i want it so that i can choose what to boot when i start my computer and i also want to store other things then ubuntu on my external drive so i can use it in xp also
The reason i want ubuntu for is to use it while watching movies or chatting osv and use xp for games and my animation programs since they tend to be quite hard to get to work on ubuntu.
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Aug 21, 2010
Im using Ubuntu 10.04 64bits with external journal.
/dev/sda1 is the "/" partition.
/dev/sdb1 is the external journal
Everything is working fine, but if a new HD is added (like dev/sdc), I have a boot error, initramfs error!
Why this is happening? How can I add a new HD without error?
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Nov 14, 2010
I have a 320gb USB hard drive, one partition for my files, one for playing Wii games, and one which I would like to use for an Ubuntu instillation.
To do this, I partitioned my disk accordingly using Windows, then booted from the Ubuntu CD to install the OS to my external hard drive partition. It asked me where I wanted to install the boot loader, so I selected the hard drive itself, rather than the specific partition, reasoning that it would scan the hard drive for a boot record.
However, when I booted it (with USB boot selected) it simply said "No Operating System found, replace system disk and press enter" or something similar.
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Jan 16, 2011
I have installed ubuntu 10.10 on and external usb drive and now my computer which runs XP will not boot unless the external drive is connected and on. Can I by pass this situation or do I have to uninstall ubuntu altogether and start over?
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Apr 8, 2011
I'm trying to install Ubuntu 10.04 (32-bit) on my external harddrive, and the boot loader also on my ext.HDDThe problem is, is that the boot loader won't install himself on my HDD. Is it possible to install the boat loader still on my external HDD?
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May 10, 2011
I am having trouble booting ubuntu 11.04 from my external hard drive, i did a custom instal using the 11.04 CD.
i made 4 partitions
/dev/sda1 ext2 /boot 1024mb (1gb)
/dev/sda5 swap 4096mb (4gb)
/dev/sda6 ext4 / 10240mb (10gb)
/dev/sda7 ext4 /home 204800mb (200gb)
and i put grub on the one what was mounted to /boot.
but my problem is when i restart my computer it just starts up windows.
my external hard drive is on, i have it set to boot from removable storage or something like ehtat first. i forget what i just know that booting from my internal hard drive is set to last so it should boot from the external.
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Jul 11, 2010
I installed Ubuntu on external USB hard drive and while booting I did got option to log into windows XP, Ubuntu. Both operating systems ran fine. i.e. GRUB had overwritten MBR and I was able to dual boot. Main issue: I have installed Ubuntu in external hard-drive so that I can use Linux whenever I want other people who are using same computer can operate on WindowsXP. Sometimes my external hard drive gives problem if there is loose connection and so that oper people using computer do not face any problem I want to disconnect external USB HD whenever I am not using Linux. GRUB menu was pointing to external hardrive so disconnecting it meant my system wont boot!!I rewrote MBR using WindowsXP CD recovery mode. Now I am unable to boot from external USB hard disk( I thought I would be able to if I choose USB hard drive in BIOS option but it did not work it logged into WindowsXP by default).Is there any way I can change WindowsXP boot.ini file so that it also shows Ubuntu in external hard disk? Or is there any way.(I do not want GRUB way as then I would have to keep my external drive connected to log into windows - which I do not want).
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Apr 15, 2010
I originally had windows vista on my pc and then I installed ubuntu on a partition, then I decided that I wanted ubuntu to be installed on my external hard drive so that it can be run on any computer, so I installed linux on my external hard drive then I deleted the linux partitions on my internal hard drive, then to further complicate thing I decided that I wanted grub un-installed because it ran slow when reading off of a external hard drive and just use dell's normal boot selector so I inserted my vista cd and ran /fixmbr and /fixboot which deleted GRUB and returned the default booting into vista, now my problem is that when I try to run linux by using dell's boot devices options It won't run and says that 'there is no boot manager installed'. Is it possible to have ubuntu on a external hard drive so that it can be booted from any computer? if so, how can I do it?
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Jun 21, 2010
I have a 9.10 fully updated install on an old P4 HP desktop that otherwise runs flawlessly. We moved it to the bedroom to use as a media center and when I plug in a Thermolake toaster with a Hitachi 750G SATA drive it is recoginized and available no problem. I can read/write no problem. It works via nfs4 no problem. The issue is if I reboot while the drive is attached it the machine refuses to reboot and hangs on the initial hardware screen not even showing a grub screen. This has always been a native ubuntu machine with no dual boot or any weird grub2 issues previously. Interestingly, I am getting the exact same issue with another HP desktop (Celeron machine) with 9.10 Server 32bit that I' using as a home server. This is obviously a bigger problem because if the server updates or requires a reboot for any reason I can't just leave the drive attached. This drive houses our movie and music collection.
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Aug 8, 2010
Esteemed (K/X)Ubuntu'ers, I need some help. I had a Samsung HDD (Internal) that crashed, was a fault of the store that sold it to me and they went bankrupt. I thought I buy an external HDD (Western Digital Elements 1.5TB) and boot Kubuntu from there, so I still use the computer till I buy a super nice one after USB 3.0 hit the streets.
The problem I keep having by booting of the external HDD is that GRUB keeps saying Code: error: bad filename how to install Kubuntu on a external HDD and make it boot correctly?
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Oct 30, 2010
Have a Dell Studio XPS with 64 bit Meerkat on it. Whenever I connect my Samsung external monitor by displayport/dvi ubuntu no longer boots. Machine unresponsive and have to cut power and disconnect it. :/
Sounds exactly like this bug, no? [URL] Except for the fact I have ATI video card and the restricted drivers (with Catalyst control center, although it is useless).
Code:
02:00.0 VGA compatible controller: ATI Technologies Inc Madison [Mobility Radeon HD 5000 Series] Win7 install works fine.
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Jun 1, 2011
Instructional post - medium difficulty. Installing on an older notebook (or other system) with no external bootable device available:No CD/DVD drive
No floppy
No boot to USB capability
No (usable) OS on HD
Solution went like this:Remove target HD from notebook.*
Disconnect HD from a desktop.**
[Code]...
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Jun 9, 2011
I have an external hard drive connected to my iMac. I have installed Ubuntu on unallocated space on my external, the first time I chose to put the bootloader on the external but when I booted up the computer and held the Option key it didn't recognize an OS to boot from.I am currently reinstalling Ubuntu but placing the bootloader on the internal hard drive hoping that the Mac boot menu will recognize an OS to boot from.
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Feb 23, 2016
In my pc I have Ubuntu and Windows while Debian on external HDD, and when boot from usb opens a black screen. Have done a boot-repair test and the result is this: URL... (there isn't MBR in sdb) now I need to istall manually it. What are the commands?
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Apr 19, 2010
I'm new to the world of Linux, but am intrigued by the variety and functionality it offers over Windows. I have an external HDD from which I would like to dual boot Linux Mint, with Windows Vista (64 Bit) remaining on the primary internal HDD. I know that my BIOS supports dual booting and booting from USB devices (my external HDD). Are there any specific dangers I need to be aware of? Is it as simple as putting in the installation disc and selecting my external HDD?
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Nov 14, 2010
I have a 320gb USB hard drive, one partition for my files, one for playing Wii games, and one which I would like to use for an Ubuntu instillation.o do this, I partitioned my disk accordingly using Windows, then booted from the Ubuntu CD to install the OS to my external hard drive partition. It asked me where I wanted to install the boot loader, so I selected the hard drive itself, rather than the specific partition, reasoning that it would scan the hard drive for a boot record.However, when I booted it (with USB boot selected) it simply said "No Operating System found, replace system disk and press en
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May 25, 2010
I have Ubuntu/Vista dual boot desktop with Single HDD (200GB) that i cloned to an external USB HDD (320GB) using clonezilla. My intention is to use the external HDD as a backup to up running in case my 3 year old desktop HDD fails. To make sure the clone is good to use if need, i connected external HDD to USB port and tried boot from it but got "Error 18". I tried to Google got some infoDid a fdisk -lu and got the following.
Code:
Disk /dev/sda: 200.0 GB, 200049647616 bytes
255 heads, 63 sectors/track, 24321 cylinders, total 390721968 sectors
[code]....
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Aug 11, 2010
i currently have lucid installed on my laptop hard drive. i took this drive out and then on a new drive in its place i have installed windows 7. reason why i couldn't put windows 7 on the same drive is that i have a BIOS based system and the hard drive is GPT based not MBR. therefore, i couldn't get windows back on it.
I figured that using an esata expresscard interface i should be able to use the Windows 7 drive externally without much speed penalty since ExpressCard in my case is implemented on PCI Express and not USB.
So i can update grub using
Code:
update-grub
and Windows 7 appears on the list. However, when i select this option during boot, it gives me errors that indicates that the external drive cannot be found (not surprising)
My guess is that when GRUB appears, the external hard drive has not been detected yet, and the modules for the expresscard may only be loaded during the boot process of lucid.
So I am wondering if there is anyway I can get this to work. meaning use lucid on my main drive and boot to Windows 7 from the external drive time to time.
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Nov 11, 2009
I have an Acer netbook that I installed Remix on. Now I can't get the thing to boot from the CD drive which is connected via the USB port. Any suggestions? I set the boot order with the CD drive first and the HD last.
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