How Do I Boot Up From External HD?

I want to boot up from the external HD, which I use to backup Time Machine. I turned Time Machine off but the backup HD still does not appear in Startup Disk.
Do I need to install Leopard on the external HD in order to boot up from it?

I completely misunderstood your question. I thought you had made a copy of your Time Machine backup and wanted to boot from that. You should be able to boot from a separate partition with a clone. If your MacBook is a PPC Mac you need to use the firewire option for your G-Tech to boot. If that isn't the issue there is a slight chance that a restart might work.
I've had good luck with using CCC to clone twice but I saw someone else post that they had one success and one failure so you might want to give cloning again another shot. Posting your question at Bombich.com might be a good idea if someone doesn't come up with a satisfactory solution for your problem here.

Similar Messages

How do I boot Leopard from external hard drive?

I'm currently staring off into space... my 3 month old MBP seems to have finished its painfully long boot and all that appears the Leopard background. The local Mac guru isn't available until Monday but did tell me I need to boot from my external hard drive. Um, how do I boot from external hard drive?
The cause of the problem: inserting flash drive powering up.
Tried safe boot. Only difference was iCal reminder popped up in space.
Mac guru told me do NOT use install disks!
Help!
AR

Apple support has told me that you cannot boot a MBP from an external drive when Leopard is installed on a MBP.
That is just plain wrong.
1) Hook up your external drive. Use FireWire for better performance.
2) Launch Disk Utility and highlight the actual drive icon at the left. Click on the Partition tab.
3) In the Partition section, click on the Options button. Click on the radio button for "GUID Partition Map". This is the option you must use in order for a drive to be bootable on an Intel based Mac. Click OK.
4) Set up your partitions however you want and click the Partition button at the lower right.
From here, you can either clone your internal drive to the external, or install Leopard on it from scratch.

How can I boot/run from external HD when internal HD is fried?

Background: I have an original vintage 2002 emac G4 1.25 that I've been messing with for the past couple of months due to slow running and hanging/crashing apps. I upgraded the RAM with an additional 256 MB several years ago and I was running OSX 10.2 without many problems until recently. I was getting messages about the hard drive being full, so I cleaned up and backed up my files to an external HD (USB, of course, since I hadn't found this forum at that time). Freeing up memory didn't help and neither did creating an administrator account, so I ran Apple Hardware Test, which turned up an error code: mem_/2/4 DIMM1/J1601
When I tried to do an erase and reinstall, the erase part went fine but the reinstall wouldn't work because (on the last of 4 discs) the machine returned a "can't write" error and suggested that the hard drive is unusable.
My questions: How can I use an external HD (Firewire, of course) to boot and run my emac when the internal HD is fried and there's no operating system on board? How do I install OSX on the external HD to boot the emac in the first place? Also, will the 384 MB of RAM be enough, or must I upgrade that, too? For that matter, what version of OSX would be best?
Thanks for any help you can offer. I am a long-time mac user (still have my Classic, which still works), and I'd really rather not replace the emac.

HFS stands for Hierarchical File System. The plus sign stands for extended or extended format.
This is the data system format that Apple uses for their operating systems.
When you buy an external hard drive device, typically they do not come pre-formatted.
You'll need to use the Disk Utility app in OS X in your username/Applications/Utilities folder on your eMac if it's still operational or when you start up your eMac from the OS X 10.5 DVD located in the Applications/Utilities folder.
You use this app to initialize and format the drive once it is connected to your eMac. If you wish, you can also, at that stage, partition the drive into separate variable size sections to make a large capacity HD more manageable.
You need to have a functioning stick of RAM in your eMac in order for it to boot up correctly.
The OS X startup routine looks for all components in your eMac that are necessary for a successful start up.
Your eMac will not boot up, even from CD/DVD, without any RAM installed.
If you have only one stick of RAM in your eMac and it's bad or corrupted, you'll need to purchase and Install a new stick of RAM to start.
You might as well purchase 2 brand new 1 GB RAM sticks for your eMac. 2 GBs
OS X 10.5 Leopard's minimum RAM requirements are 512 MBs of RAM.
Your eMac can max out at 2 GBs of RAM.
The specs for the RAM are PC2700 SDRAM, DDR333, 184 pins.
Here are links to websites I use to buy Mac accessories and Hard drives compatible with Macs.
http://eshop.macsales.com/shop/firewire/
http://www.lacie.com/us/products/range.htm?id=10033

Booting up from external hard drive

I'm about to take the plunge and install Leopard. But first, I am backing up all data on an external harddrive. My question is, should the worst happen, how do I use the external as a bootable harddrive? (Am I saying this right?) How do I boot up from the external?
Also, can I keep that and run Tiger after I successfully install Leopard? In case I need to run a classic program, which Tiger does and from what I read Leopard doesn't handle?
thanks for any advice for a mac user and not a programmer!

Presuming that the external has a valid copy of Mac OS X, either through installing from the system disks or Mac OS X install disk or by making a clone of your current boot drive (via a utility like Carbon Copy Cloner or SuperDuper), then you just hold down the Option key while starting, or restarting, the Mac. You'll be presented with a list of bootable drives and you can just choose the external.
can I keep that and run Tiger after I successfully install Leopard?
Presuming you're referring to Tiger on the external drive, yes, you certainly can.
In case I need to run a classic program, which Tiger does and from what I read Leopard doesn't handle?
You are correct; Leopard no longer supports the Classic environment.
Regards.

How do I retrieve data from external hard drive

How do I retrieve data from external hard drive

What problem are you encountering?
Normally you would connect it to your Mac and just drag and drop.

How to run Boot Camp on External Hard Drive?

I use my mid-2012 11" MacBook Air for gaming and school work. My hard drive is filling up fast, and I was hoping I could use an external hard drive and Boot Camp to run Windows for my games, thus freeing up most of my hard drive.
My questions are:
1) Is this possible?
2) What equipment would I need to do it?
3) What would I be looking for in an external hard drive for this purpose?
4) If I did this, would I be able to unplug and replug my external hard drive without causing a problem?
5) What version of Windows should I use?
The program I will be using for my games is Steam.

For the MacBook Pro Retina and Windows 8.1 the setup procedure was the following:
Step -1: Make sure your Thunderbot drive works, stable and reliable.
Step 0. Make sure you have a complete Time Machine backup of you Mac OS hard drive. Seriously. Very easy to mess things up completely.
Step 1. Get a Windows 8.1 64 bit iso. You might want to try it out first before committing money to it. For that you can download an official 90 day Windows 8.1 Enterprise evaluation from Microsoft. It's somewhat hidden from mainstream experience, but search engines help you there.
It is important to use 64 bit, as 32 bit will not work.
Step 2. Get a USB flash drive. 8 GB USB flash drive worked fine for me.
Step 3. On Window box or from virtualized Windows machine make a bootable setup USB. I have used Rufus for that. Make sure you have selected "GTP partition scheme for UEFI computer" and FAT32.
I've tried MBR partition scheme, but it hasn't worked for me.
Step 4. Once bootable setup USB is created, shutdown everything. Plugin your external thunderbolt drive and bootable setup USB flash drive. Hold ALT (Option key) to choose from what thing to boot.
Step 5. If you are lucky you will see yellow "EFI Boot". Yellow usually meens 'external'. That meens you are going to boot into setup from USB flash drive. Go for it.
Step 6. In 5-10 minutes you should get into Window setup. Whenever you are asked, always choose "Custom" or so, till you get to the hard drive selection screen. You should see list of many partitions coming from 2 drives - one internal and one external.
WARNING: Be super careful here!!!!!
Step 7. Convince Windows to install itself on the drive that is external. You might have to delete all of the partitions of the external drive and leave it completely unpartitioned. This will make Windows autoconvert it's partition scheme to GTP.
WARNING: Think twice before deleting any partitions; do not delete any partitions on your internal drive.
Step 8. Let Windows install itself. I recommend turning off windows autoupdate for now, especially drivers part of it, since Windows 8.1 autoudate seams to be pushing buggy drivers at the moment.
Step 9. If you are SUPER lucky after reboot (and holding ALT/Option) you should see gray "EFI boot" that will boot Windows from external drive.
Step 10. Download and install Apple latest bootcamp drivers, things should work normally once those drivers are installed.
Step 11. Enjoy!

How do I copy iTunes from external hard drive to iMac?

How do I copy iTunes from external
Hard drive to iMac?

if your main library is on your external, then when not connected, you wont have access to it.
so first decide, where do you want to keep the files.
E.g. In my case, I keep my files on "C:\iTunes Music".
I have a backup on external "Z:\iTunes Backup". If I format my laptop, this is how I restore everything.
Edit -> Preferences -> Advanced.
The iTunes music folder in selects as "C:\iTunes Music"
I have checked Keep iTunes Music Folder Organized, and also Copy Files to iTunes Music folder when adding to ibrary". Click OK to save and close preferences.
My iTunes list is now empty. I go to file, and select "Add Folder to Library". From that window, I select "Z:\iTunes Backup". iTunes then copies everything from the backup to "C:\iTunes Music". For me, backup is backup, I dont need it to play music.
Now decide this. If you do not want to keep music on C:, but want to only connect the external to update music on your ipod, do this:
In preferences, set iTunes Music folder as "Z:\iTunes Backup", and uncheck Copy files to iTunes Music folder, since they are already there. Then in files, select Add folder to library again to build and update the list.

HT1660 How do I run itunes from external Hard drive?

How do I run itunes from external hard drive. I only have ssd on PC and media is too large to fit

You do not.
iTunes, like all programs is installed on the C drive.
You can store the media on another drive.
Assuming you are moving an existing library from another computer:
Move or Copy the ENTIRE iTunes folder from the old computer to the new computer and put it where you want it.
Install iTunes using the default options.
Hold <SHIFT> while launching iTunes. It will prompt to create a new library or locate an existing library.
Select the option to locate an existing library.
Point iTunes to the iTunesLibrary.itl file in the iTunes folder that was moved from the old computer.

How do you boot up from a 2nd drive?

I will be installing a 2nd drive and doing a clean instal of 10.6. How do I boot up from this drive, and then how do I transfer the files, favopurites and email etc across?

You asked if it transferred every folder. I answered that Migration Assistant does not transfer the old System, only your User files. Every single User file.
Once you have finished transferring your User files, you can stop using the old system drive, or even remove it and set it aside on a shelf as a backup, or wait a week or two and and re-use it for something else.
Once you boot from a new System drive, / (the root directory) is located on the new Boot Drive, and new /Users is created there, and everything is referenced from there. Move your User files over as well, and the old drive will not be referenced any more.

How do I import photos from external hard drive to iCloud library?

I have saved many photos to an external hard drive for security. I would like to store at least some of them in iCloud so I have direct access from Photos. Is this possible please?

how do I import photos from external hard drive to iCloud library?
Just like you'd do it with iPhoto. Drag the photos or folder of photos into the open Photos Library window or onto the Photos icon in the Dock.
If you have the iCloud Photo Library activated in Photos the new photos will be copied to the online iCloud Photo Library along with the rest of the photos in your library. Remember, with the iCloud Photo Liberty it's all the photos or none. You may have to purchase additional iCloud space to store all of your photos.

How do change boot disk from single user mode?

My G5 hangs when booting at the blue screen while "Loading printing services...". Attempting to boot into safe mode only hangs at the grey gear screen. It will, however, successfully boot into single user mode. I've run fsck but no change in bootability. I have another disk in the machine that has Tiger on it. How do I change the boot disk from the single user prompt?

You can hold c and boot off the installer disk and select disk utility repair disk/permissions
or you can hold option to boot off Mac OS X on another drive, like a clone and run Data Rescue to recvoer your files.
It does sound bad, you can try going through these
http://docs.info.apple.com/article.html?artnum=106464
But I think you'll need a fresh install, hopefully you have been backing up/cloning to a external drive.
http://homepage.mac.com/hogfish/Personal11.html

Can't boot OS9 from external HD

I have an external HD with OS X4 and OS9 installed on it. Classic will open, but I can't instal an OS 9 app because the app says I need virtual memory. I tried to boot OS9 from the external drive to install the app from OS9, but it is not a start up option in system preferences. I also can't start it from the c key. I have a full retail version of OS9.
Does any one have any suggestions? Do I need to install an earlier version of OS X?

Allan,
Thanks for the response.
When I upgraded my iMac G5 to OS X5 I thought it was time to finally get rid of all of my OS9 apps. I originally had them on an external bootable HD. It's now Thanksgiving and I had a few holiday graphics in Corel Print House 2000 I would like to use (OS9). I thought I would reinstall OS X4 and OS9 on the external HD which I did. OSX4 boots fine and classic opens but I can't get it to boot from OS9. I can't reinstall Print House because it says it needs virtual memory to instal.
Any ideas how I could load Print House onto my external HD or how to open a .cxx file? I wonder how I got this app on the external originally.

How to merge key field from external source system with SAP R/3 master

Hi,
In SAP BW 7.0 system, our scenario is Master Data for 0GL_ACCOUNT is coming from SAP R/3 alongwith the Transactional data records for standard FI cubes. Then, one more set of transaction data is coming from external source system, a flat file, into another custom DSO(ZDSO_FI), which also has this GL Account field.
This flat file's GL account, GL_file, has to be basically mapped/merged with the standard 0GL_ACCOUNT field so that at the time of loading the transactional data for custom DSO, ZDSO_FI (with transformation mapping GL_file > 0GL_ACCOUNT), system automatically refers to the 0GL_ACCOUNT master data to load these incoming transactional values, from the external flat file system. How can this be done?
To illustrate the scenario, say I have 5 records in 0GL_ACCOUNT, loaded from SAP R/3 into SAP BW-
0GL_ACCOUNT      Short Description     Source System
100                                   D1                          R/3
200                                   D2                          R/3
300                                   D3                          R/3
400                                   D4                          R/3
500                                   D5                          R/3
Now suppose if my flat file has following sample transactional data, to be uploaded in SAP BW ZDSO_FI-
GL_file      Key Figure1
400          789
200          567
Then after uploading this transactional data in ZDSO_FI (with transformation mapping GL_file > 0GL_ACCOUNT), the 0GL_ACCOUNT data becomes as below-
0GL_ACCOUNT      Short Description     Source System
400
200
100                                   D1                          R/3
200                                   D2                          R/3
300                                   D3                          R/3
400                                   D4                          R/3
500                                   D5                          R/3
So note that the system did not refer the incoming GL's from flat file, although the field is mapped to 0GL_ACCOUNT in transformation, to the already available master data. Rather created 2 new data rows for the GL accounts coming from external system. Because of this I am not able to perform the calculations common from standard FI cube and ZDSO_FI, with GL account as key field. I need to synchronise these data values based on GL Account to proceed with further calculation and am badly stuck.
Request if anyone can please throw some light on how to achieve this seemingly simple requirement?
Thanks in advance.
Nirmit

Better post this thread is in the [Enterprise Data Warehousing|Data Warehousing; forum.

Can't boot Arch from external HDD

Hi, well first off this is not my first Arch Linux installation, I'm using Arch for a little over a year now (coming from slack). But this is my first attempt to have Arch on an external HDD.
Alrighty, the situation is as follows: A rather new computer (supports booting from USB devices and the bios is set to boot from removable devices first) with a built in HDD and an external HDD that's connected to that computer via USB.
What I did: I connected the external HDD to the computer and booted off a 2008.6 Overlord core-CD.
Arch-Live recognized the internal HDD as sda and the external HDD as sdb.
I partitioned the external HDD using cfdisk and ran mkfs.ext3 on it (I didn't use any switches with that).
I started the installer, set my mount points (I should mention I'm not gonna use a swap partition here), installed the packages, well just went through the installation routine and installed grub in the MBR of sdb (the external HDD).
Then I rebooted. And this is what doesn't work: When I boot that computer with the external HDD connected the computer completely hangs right before grub would come up. It freezes completely, ctrl+alt+del doesn't work, I need to use the powerswitch to reboot the computer.
So I put the Arch-CD back in the CD drive trying to boot into my Arch System on the external HDD. So I started typing:
root (hd1,0)
kernel /boot/vmlinuz26 root=/dev/sdb1 ro vga=773
initrd /boot/kernel26.img
When I try to boot off that grub tells me that there is no such device as hd1,0. The funny thing is, that the auto copmletion in grub works for the kernel /boot/vmlinuz26 but it doesn't for the device /dev/sdb1, in fact even root=/de<tab> returns a "unrecognized string" message.
So this is what I did and I can't boot off my external HDD, neither can I boot into my system on the external hdd from the cdrom.
What am I missing here?

The harddrive you boot from is in my experience always hd0. Could this mean your external disc is hd2?
Have you tried chainloading from the installer cd to your external disc?

Help, need help booting XP from external hard drive

Hi all, i can't seem to get XP to boot from my external hard drive.
OK, heres the story. i have an imac. i use bootcamp to run OSX and XP. things are good. but i run out of space, so i buy myself a 2tb bare drive and swap it out. so i put the original internal with OSX and XP into an external firewire/usb enclosure. I install refit. I hold option on startup and it shows that i have a windows and a mac OS i can boot from the External firewire disk. looks great, but when i choose the windows from the Ext disk, it doesn't boot, instead it loads windows7 on my new 2tb internal disk.
i hear its hard to boot windows XP from an external disk. my professor told me it has something to do with the boot.ini file on the XP disk... something about changing the value of the "rdisk" to 1, which i have done.
i am not trying to reinstall xp, rather just boot from it because i have so many applications/plugins that i do not wish to reinstall.
Does anyone know if this is possible?>> Logon to windows7, and create a system image/backup of the system FROM the XP external disk? and then reinstall XP on that disk, then restore back onto itself? that way i won't have to reinstall.
anyone have any ideas?

Hi boi,
you can't start ANY windows OS from external HD...

How Do I Boot Up From External HD?

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