Arch will only boot if I have USB drive plugged in

So this is a bit of a weird problem. I was having trouble installing arch from USB with GPT and UEFI last night (got a new SSD and did a fresh install onto it). Everything worked fine except efibootmgr couldn't find efivars, but I ended up fixing that and setting a boot entries.
Now, I can boot into Arch, everything works perfectly, but only if my USB stick is plugged in when I boot. If it isn't, I just boot into a black screen and have to do a hard restart. Once I am booted into Arch I can remove the USB stick without anything failing.
The only thing I can think of is I might have somehow written some important information needed to boot onto the USB instead of the SSD? I don't know enough about linux/UEFI/booting to pin point exactly what is going wrong, though. Any ideas?
I'm using a Lenovo Thinkpad T420 if that helps. I previously had arch installed with UEFI and GPT before doing a fresh install on the new hdd, so I don't think it's the laptop.
Cheers!

I am using UUID in my fstab.
cfr wrote:
How are you booting? That is, I know EFI but are you booting the stub loader directly? Or are you using a boot manager (rEFInd, gummiboot)? Or a boot loader (grub, syslinux)? Or something else (no idea but don't want to rule anything out)?
What does
modprobe efivars
efibootmgr -v
give?
I ran efibootmgr -v and noticed the entry I set during installation was missing, so I added it again but now I can't boot at all.
I tried using both the direct efibootmgr method and gummiboot method listed in the beginner's install guide.
I can chroot into the system using the live usb but I'm not sure how to post the results of efibootmgr - v here, if I could startx as my user I could but I'm not sure how to do it.

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Hi NcBunky,
Are you using Win 7 64 bit? Did you update the Texas Instruments (TI) USB 3.0 XHCI Host Controller?
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Jaco
****I am not an HP employee****
Please give a" Kudos" if advice received is relevant or" Accept as Solution" if your problem has been solved.
+++++++++++++++++++++++++++++++++++++++++++++++++++++
H8 1380t CTO, Intel i7 3820
16 GB DDR3
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Errare humanum est.

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My Internal HD became corrupt and it would not boot up so I installed My osx onto a new HD via usb and then inserted into my macbook pro but it wont boot up. It will only boot up if i connect via usb how can i boot it as an internal HD?

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Shootist007 wrote:
If the system won't boot from the new drive the OP bought and install OS X on it it certainly won't boot from the original drives Recovery HD partition.
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Thank you

24" iMac will only boot in safe mode

Here is the short version:
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Please read this whole message before doing anything.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
Third-party system modifications are a common cause of usability problems. By a “system modification,” I mean software that affects the operation of other software — potentially for the worse. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions — they’re easy to carry out and won’t change anything on your Mac.
These steps are to be taken while booted in safe mode.
Below are instructions to enter some UNIX shell commands. The commands are harmless, but they must be entered exactly as given in order to work. If you have doubts about the safety of the procedure suggested here, search this site for other discussions in which it’s been followed without any report of ill effects.
The commands may line-wrap or scroll in your browser, but each one is really just a single line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, and you can then either copy or drag it. The headings “Step 1” and so on are not part of the commands.
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
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Step 1
Triple-click the line of text below to select it. Copy the selected text to the Clipboard (command-C). Then click anywhere in the Terminal window and paste (command-V).
find /Sy*/L*/Ex* -type f -name Info.plist -exec sh -c '/usr/libexec/PlistBuddy -c "Print :CFBundleIdentifier" "$1" 2> /dev/null | egrep -qv "apple|Accusys|ArcMSR|ATTO|CalDigit|HighPoint|hp-fax|JMicron|print|SoftRAID|stex" && echo ${1%*.kext/*}.kext' {} {} \;
Post the lines of output (if any) that appear below what you just entered (the text, please, not a screenshot.) You can omit the final line ending in “$”.
Step 2
Repeat with this line:
ls -1A /e*/mach* {,/}L*/{Ad,Compon,Ex,Fram,In,Keyb,La,Mail/Bu,P*P,Priv,Qu,Scripti,Servi,Spo,Sta}* L*/Fonts 2> /dev/null
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My iMacG5 will only boot to white screen, gray apple and spinning gear. Help?

My iMacG5 will only boot to white screen, gray apple and spinning gear. Help?
Also not totally sure if it's an Intel based computer, but that's what I recall. Any way to check, since I can't get to About This Mac window?
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Have tried...
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And...
Booting From An OS X Installer Disc
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You need to do an Erase and Install or an Archive and Install depending on whether the hard drive is OK or needs to be reformatted.
Start by booting from your Leopard DVD. The rest is just following directions.
How to Perform an Archive and Install
An Archive and Install will NOT erase your hard drive, but you must have sufficient free space for a second OS X installation which could be from 3-9 GBs depending upon the version of OS X and selected installation options. The free space requirement is over and above normal free space requirements which should be at least 6-10 GBs. Read all the linked references carefully before proceeding.
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Repairing the Hard Drive and Permissions
Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Installer menu (Utilities menu for Tiger, Leopard or Snow Leopard.) After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer. Now restart normally.
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6. You can now download a Combo Updater directly from Apple's download site to update your new system to the desired version as well as install any security or other updates. You can also do this using Software Update.

My macbook pro will only boot in safe mode

Hey,
I have a macbook pro 15-inch, Early 2011 running osx 10.9.4. I have a SSD hard drive that i installed myself a year ago and hasn't shown any defects. Its a 120 gb OCZ-AGILITY3.
My problem:
My macbook will only boot in safe mode nowadays. I have done a complete erasion of my hard drive and installed osx mavericks twice already. After the installation the computer will safely go to the desktop. But if i then do a reboot it won't get further than after the first apple logo, sometime the turning wheel will pop up, before turning off and trying again. i have tried resetting PRAM, I have tried resetting SMC, i have tried avoiding SMC (with big fan rate), but all with no success.
I have done a complete hardware test (the longer one) and it showed "no troubles found".
My guess is that the problem is with the battery. My computer won't run anymore without the adapter, when i pull the adapter out it either stays on for a while before just turning off. Without having it plugged in it won't start. Is it possible that during normal start up there is some kind of communication with the battery that can cause this?
I ran a diagnostic shown in this thread (Will only boot in safe mode) and included it in this post.
Hope someone can help me out.
Thanks,
Bram
Start time: 17:07:42 08/25/14
Model Identifier: MacBookPro8,2
System Version: OS X 10.9.4 (13E28)
Kernel Version: Darwin 13.3.0
Boot Mode: Safe
Time since boot: 10 minutes
Battery
Condition: Replace Now
Diagnostic reports
2014-08-25 UserEventAgent crash
Log
Aug 26 00:41:52 Previous Shutdown Cause: -128
Aug 25 16:23:38 smb1_treeconnect_internal: Malformed tree connect with a bad word count! wc= 2
Aug 25 16:24:05 process rpcsvchost[94] thread 917 caught burning CPU! It used more than 50% CPU (Actual recent usage: 99%) over 180 seconds. thread lifetime cpu usage 100.014147 seconds, (82.533432 user, 17.480715 system) ledger info: balance: 90006319931 credit: 100003230498 debit: 9996910567 limit: 90000000000 (50%) period: 180000000000 time since last refill (ns): 90079246240
Aug 25 16:25:50 smb1_treeconnect_internal: Malformed tree connect with a bad word count! wc= 2
Aug 25 16:58:05 jnl: b(1, 3): replay_journal: from: 9340928 to: 9773056 (joffset 0x37a000)
Aug 25 16:58:05 jnl: b(1, 3): examining extra transactions starting @ 9773056 / 0x952000
Aug 25 16:58:05 jnl: b(1, 3): txn starting at 9773056 (9773056) @ index 80 bnum 2696544 (8192) with disk cksum != blhdr cksum (0x93b69228 0xc647562)
Aug 25 16:58:05 jnl: 0x662b0000 0x451b0000 0x2a0001ff 0x40000000 0xd7330300 0x46001d00 0x6c006f00 0x65006400
Aug 25 16:58:05 jnl: b(1, 3): restarting journal replay (9340928 - 9773056)!
Aug 25 16:58:05 jnl: b(1, 3): replay_journal: from: 9340928 to: 9773056 (joffset 0x37a000)
Aug 25 16:58:05 jnl: b(1, 3): journal replay done.
Aug 25 16:58:06 Previous Shutdown Cause: -128
Aug 25 16:59:26 smb1_treeconnect_internal: Malformed tree connect with a bad word count! wc= 2
Aug 25 16:59:59 smb1_treeconnect_internal: Malformed tree connect with a bad word count! wc= 2
Activity
CPU: user 17%, system 4%
CPU per process: WindowServer (UID 0) is using 30.5 %
launchd
/System/Library/LaunchAgents/com.apple.AirPortBaseStationAgent.plist
- com.apple.AirPortBaseStationAgent
Contents of /System/Library/LaunchAgents/com.apple.AirPortBaseStationAgent.plist (XML document text)
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>com.apple.AirPortBaseStationAgent</string>
<key>EnableTransactions</key>
<true/>
<key>LowPriorityIO</key>
<true/>
<key>LimitLoadToSessionType</key>
<string>Aqua</string>
<key>POSIXSpawnType</key>
<string>Background</string>
<key>LaunchEvents</key>
<dict>
<key>com.apple.distnoted.matching</key>
<dict>
<key>com.apple.airport.agent.prefschanged</key>
<dict>
<key>Name</key>
<string>com.apple.airport.agent</string>
</dict>
</dict>
<key>com.apple.bonjour.events</key>
...and 21 more line(s)
Spotlight: Indexing and searching disabled
Font issues: 11
Wi-Fi
link auth: wpa-psk
Restricted files: 1
Elapsed time (s): 278

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How can I transfer files from a 27" iMac which will only boot in safe mode?

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Hello Myles, likely it is a Hardware problem.
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We have a PowerMac G5 Dual 2.5GHZ . This mac will ONLY boot up when the side panel and the clear plastic panel are removed. If the Mac is assembled, the Mac will start and Chime, but thats it. No display and the fans are dead quite. Any Suggestions? Thanks in advance

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Hi All
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Hi buddy,
It seems that this is a typical example, that only pretested display drivers from Toshiba should be used. Why?
The nVidia drivers are not pretested and they dont have an overheat protection. So for me it sounds like that the nVidia driver has destroyed your graphic card. That means no driver will help you and reinstallation of the whole system too.
I think the only option is replacing the graphic card. Therefore you should contact an authorized service provider in your country. Here you can search:
http://www.csd.toshiba.com
Explain the whole story and then you will see, what the technicians say. If your notebook is under warranty, hopefully this will be covered too. Normally other display drivers you have to install on your own risk
Good luck! :)

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Dave M.
MacOSG Founder/Ambassador  An Apple User Group  iTunes: MacOSG

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Welcome to the Apple Support Communities
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http://support.apple.com/kb/HT1379
In fact, do 3 in a row, takes a bit of time.
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Arch will only boot if I have USB drive plugged in

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