Gray screen during startup after boot camp installation

I cannot either Mac and Windows t start on Mac Mini after I updated with Windows7 on Bootcamp.

Hi there Sudarshan21,
I would recommend taking a look at the troubleshooting steps found in the article below.
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/ts2570
-Griff W.

Similar Messages

MacBook Pro 13" Late 2011 Experiencing Significant Slow Down After Boot Camp Installation

     Okay, so today, after installing Windows 7 on my MacBook Pro via Bootcamp Assistant, I experienced significant performance slow down (fans going at full blast, applications opening after extended periods of time, keystrokes not being registered) when I returned to my OS X partition/second hard drive. I have dual hard drives, one of them being a Samsung 256 GB SSD with OS X Mavericks and the other being my original 500 GB HDD, divided into a 250 GB OS X Mavericks partition and a 250 GB Windows partition. I have the SSD set as my startup disk and I have it located in the main HDD bay. I moved the old HDD into a caddy and placed it where the optical drive normally should be.
      After multiple failed attempts to install Windows via USB and Bootcamp Assistant, I decided to reinstall my optical drive and use a Windows installation disk. This attempt proved successful, and I was able to install Windows 7 onto the 250 GB partition I had created for it on the 500 GB HDD. After completing basic setup of Windows, I removed the optical disk drive and reinstalled the SSD and the HDD into their original spots (SSD in the main HDD bay, HDD in the caddy where the optical drive normally is).
     After completing this tedious process, I booted my Mac back up using the SSD. However, I noticed something was wrong when the login screen, apps, and nearly everything else on my desktop had slowed to crawl. I decided to check my Activity Monitor to see what the problem might be. Activity Monitor told me that the task "kernel_task" was taking up anywhere from 200-600% of my CPU, which explained the slowdown in performance. I looked around to see if there were others with the same problem as me, and I found that Spotlight Indexing might be an issue, with a potential remedy being move my Bootcamp Partition into the Privacy section of Spotlight under System Preferences. After doing that, I experienced no increase in performance and everything was still going very slowly.
     The next step I took was to see if booting into Safe Mode would help the issue. After booting into Safe Mode on my SSD, I noticed that things were back to their normal speeds, with applications opening at the speed they should be and keystrokes being registered instantaneously. However, the fans were still going and had not shut off once booting into Safe Mode. In addition, I checked Activity Monitor and the "kernel_task" in question was no longer taking up massive amounts of the CPU.
     At this point, I don't know what to do and I need help in restoring my Mac to original speeds. I may end up deleting my Boot Camp partition as a last measure if all else fails, seeing as I installed Windows in the first place for running a few programs and games that I can live without. However, I'd prefer to not have things come to that and fix things before deleting the Boot Camp Partition. I've heard that if everything runs normally in Safe Mode, then the issue is third-party software. Is this true?
     Any help would be greatly appreciated as I am writing this from the MacBook in question in Safe Mode because it's essentially useless in normal SSD operation.

1. This procedure is a diagnostic test. It changes nothing, for better or worse, and therefore will not, in itself, solve the problem. But with the aid of the test results, the solution may take a few minutes, instead of hours or days.
Don't be put off merely by the seeming complexity of these instructions. The process is much less complicated than the description. You do harder tasks with the computer all the time.
2. If you don't already have a current backup, back up all data before doing anything else. The backup is necessary on general principle, not because of anything in the test procedure. Backup is always a must, and when you're having any kind of trouble with the computer, you may be at higher than usual risk of losing data, whether you follow these instructions or not.
There are ways to back up a computer that isn't fully functional. Ask if you need guidance.
3. Below are instructions to run a UNIX shell script, a type of program. All it does is to collect information about the state of the computer. That information goes nowhere unless you choose to share it. However, you should be cautious about running any kind of program (not just a shell script) at the behest of a stranger. If you have doubts, search this site for other discussions in which this procedure has been followed without any report of ill effects. If you can't satisfy yourself that the instructions are safe, don't follow them. Ask for other options.
Here's a summary of what you need to do, if you choose to proceed:
Copy a line of text in this window to the Clipboard.
Paste into the window of another application.
Wait for the test to run. It usually takes a few minutes.
Paste the results, which will have been copied automatically, back into a reply on this page.
The sequence is: copy, paste, wait, paste again. You don't need to copy a second time. Details follow.
4. You may have started the computer in "safe" mode. Preferably, these steps should be taken in “normal” mode, under the conditions in which the problem is reproduced. If the system is now in safe mode and works well enough in normal mode to run the test, restart as usual. If you can only test in safe mode, do that.
5. If you have more than one user, and the one affected by the problem is not an administrator, then please run the test twice: once while logged in as the affected user, and once as an administrator. The results may be different. The user that is created automatically on a new computer when you start it for the first time is an administrator. If you can't log in as an administrator, test as the affected user. Most personal Macs have only one user, and in that case this section doesn’t apply. Don't log in as root.
6. The script is a single long line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, though you may not see all of it in the browser window, and you can then copy it. If you try to select the line by dragging across the part you can see, you won't get all of it.
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PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/libexec;clear;cd;p=(Software Hardware Memory Diagnostics Power FireWire Thunderbolt USB Fonts 51 4 1000 25 5120 KiB/s 1024 85 \\b%% 20480 1 MB/s 25000 ports ' \*AutoCad \*dropbox \*GoogleDr\* vidinst\* ' DYLD_INSERT_LIBRARIES\ DYLD_LIBRARY_PATH -86 ` route -n get default|awk '/e:/{print $2}' ` 25 N\\/A down up 102400 25600 recvfrom sendto CFBundleIdentifier 25 25 25 1000 MB com.apple.AirPortBaseStationAgent 464843899 );N5=${#p[@]};p[N5]=` networksetup -listnetworkserviceorder|awk ' NR>1 { sub(/^$[0-9]+$ /,"");n=$0;getline;} $NF=="'${p[26]}')" { sub(/.$/,"",$NF);print n;exit;} ' `;f=('\n%s: %s\n' '\n%s\n\n%s\n' '\nRAM details\n%s\n' %s\ %s '%s\n-\t%s\n' );S0() { echo ' { q=$NF+0;$NF="";u=$(NF-1);$(NF-1)="";gsub(/^ +| +$/,"");if(q>='${p[$1]}') printf("%s (UID %s) is using %s '${p[$2]}'",$0,u,q);} ';};s=(' /^ *$|CSConfigDot/d;s/^ */ /;s/[-0-9A-Fa-f]{22,}/UUID/g;s/(ochat)\.[^.]+(\..+)/\1\2/;/Shared/!s/\/Users\/[^/]+/~/g ' ' s/^ +//;5p;6p;8p;12p;' ' 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("T")";printf("\nContents of %s\n%s\n",F,f);if(l>L) printf("\n ...and %s more line(s)\n",l-L);} ' ' /^ +[NP].+ =/h;/^( +D.+[{]|[}])/{ g;s/.+= //p;};' 's/0/Off/p' ' END{print NR} ' ' /id: N|te: Y/{i++} END{print i} ' ' / / { print "'"${p[28]}"'";exit;};1;' '/ en/!s/\.//p' ' NR!=13{next};{sub(/[+-M]$/,"",$NF)};'"`S0 39 40`" ' $10~/$L/&&$9!~"localhost" { sub(/.+:/,"",$9);print $1": "$9;} ' '/^ +r/s/.+"(.+)".+/\1/p' 's/(.+\.wdgt)\/(Contents\/)?Info\.plist$/\1/p' 's/^.+\/(.+)\.wdgt$/\1/p' );c1=(system_profiler pmset\ -g nvram fdesetup find syslog df vm_stat sar ps sudo\ crontab sudo\ iotop top pkgutil 'PlistBuddy 2>&1 -c "Print' whoami cksum kextstat launchctl sudo\ launchctl crontab 'sudo defaults read' stat lsbom mdfind ' for i in ${p[24]};do ${c1[18]} ${c2[27]} $i;done;' defaults\ read scutil sudo\ dtrace sudo\ profiles sed\ -En awk /S*/*/P*/*/*/C*/*/airport networksetup mdutil sudo\ lsof test );c2=(com.apple.loginwindow\ LoginHook '" /L*/P*/loginw*' '" L*/P*/*loginit*' 'L*/Ca*/com.ap*.Saf*/E*/* -depth 1 -name In*t -exec '"${c1[14]}"' :CFBundleDisplayName" {} \;' '~ $TMPDIR.. \( -flags +sappnd,schg,uappnd,uchg -o ! -user $UID -o ! -perm -600 $' '.??* -path .Trash -prune -o -type d -name *.app -print -prune' :${p[35]}\" :Label\" '{/,}L*/{Con,Pref}* -type f ! -size 0 -name *.plist -exec plutil -s {} \;' "-f'%N: %l' Desktop L*/Keyc*" therm sysload boot-args status " -F '\$Time \$Message' -k Sender kernel -k Message Req 'bad |Beac|caug|dead[^bl]|FAIL|fail|GPU |hfs: Ru|inval|jnl:|last value [1-9]|n Cause: -|NVDA$|pagin|proc: t|Roamed|rror|ssert|Thrott|tim(ed? ?|ing )o|WARN' -k Message Rne 'Goog|ksadm|SMC:' -o -k Sender fseventsd -k Message Req 'SL' " '-du -n DEV -n EDEV 1 10' 'acrx -o comm,ruid,%cpu' '-t1 10 1' '-f -pfc /var/db/r*/com.apple.*.{BS,Bas,Es,J,OSXU,Rem,up}*.bom' '{/,}L*/Lo*/Diag* -type f -regex .\*[cgh] ! -name *ag \( -exec grep -lq "^Thread c" {} \; -exec printf \* \; -o -true $ -execdir stat -f:%Sc:%N -t%F {} \;|sort -t: -k2 |tail -n'${p[38]} '-L {/{S*/,},}L*/Lau* -type f' '-L /{S*/,}L*/StartupItems -type f -exec file {} +' '-L /S*/L*/{C*/Sec*A,E}* {/,}L*/{A*d,Ca*/*/Ex,Compon,Ex,In,iTu,Keyb,Mail/B,P*P,Qu*T,Scripti,Sec,Servi,Spo,Widg}* -type f -name Info.plist' '/usr/lib -type f -name *.dylib' `awk "${s[31]}"<<<${p[23]}` "/e*/{auto,{cron,fs}tab,hosts,{[lp],sy}*.conf,pam.d/*,ssh{,d}_config,*.local} {,/usr/local}/etc/periodic/*/* /L*/P*{,/*}/com.a*.{Bo,sec*.ap}*t /S*/L*/Lau*/*t .launchd.conf" list getenv /Library/Preferences/com.apple.alf\ globalstate --proxy '-n get default' -I --dns -getdnsservers\ "${p[N5]}" -getinfo\ "${p[N5]}" -P -m\ / '' -n1 '-R -l1 -n1 -o prt -stats command,uid,prt' '--regexp --only-files --files com.apple.pkg.*|sort|uniq' -kl -l -s\ / '-R -l1 -n1 -o mem -stats command,uid,mem' -i4TCP:0-1023 com.apple.dashboard\ layer-gadgets '-d /L*/Mana*/$USER&&echo On' '-app Safari WebKitDNSPrefetchingEnabled' );N1=${#c2[@]};for j in {0..8};do c2[N1+j]=SP${p[j]}DataType;done;N2=${#c2[@]};for j in 0 1;do c2[N2+j]="-n ' syscall::'${p[33+j]}':return { @out[execname,uid]=sum(arg0) } tick-10sec { trunc(@out,1);exit(0);} '";done;l=(Restricted\ files Hidden\ apps 'Elapsed time (s)' POST Battery Safari\ extensions Bad\ plists 'High file counts' User Heat System\ load boot\ args FileVault Diagnostic\ reports Log 'Free space (MiB)' 'Swap (MiB)' Activity 'CPU per process' Login\ hook 'I/O per process' Mach\ ports kexts Daemons Agents launchd Startup\ items Admin\ access Root\ access Bundles dylibs Apps Font\ issues Inserted\ dylibs Firewall Proxies DNS TCP/IP Wi-Fi Profiles Root\ crontab User\ crontab 'Global login items' 'User login items' Spotlight Memory Listeners Widgets Parental\ Controls Prefetching );N3=${#l[@]};for i in 0 1 2;do l[N3+i]=${p[5+i]};done;N4=${#l[@]};for j in 0 1;do l[N4+j]="Current ${p[29+j]}stream data";done;A0() { id -G|grep -qw 80;v[1]=$?;((v[1]==0))&&sudo true;v[2]=$?;v[3]=`date +%s`;clear >&-;date '+Start time: %T %D%n';};for i in 0 1;do eval ' A'$((1+i))'() { v=` eval "${c1[$1]} ${c2[$2]}"|'${c1[30+i]}' "${s[$3]}" `;[[ "$v" ]];};A'$((3+i))'() { v=` while read i;do [[ "$i" ]]&&eval "${c1[$1]} ${c2[$2]}" \"$i\"|'${c1[30+i]}' "${s[$3]}";done<<<"${v[$4]}" `;[[ "$v" ]];};A'$((5+i))'() { v=` while read i;do '${c1[30+i]}' "${s[$1]}" "$i";done<<<"${v[$2]}" `;[[ "$v" ]];};';done;A7(){ v=$((`date +%s`-v[3]));};B2(){ v[$1]="$v";};for i in 0 1;do eval ' B'$i'() { v=;((v['$((i+1))']==0))||{ v=No;false;};};B'$((3+i))'() { v[$2]=`'${c1[30+i]}' "${s[$3]}"<<<"${v[$1]}"`;} ';done;B5(){ v[$1]="${v[$1]}"$'\n'"${v[$2]}";};B6() { v=` paste -d: <(printf "${v[$1]}") <(printf "${v[$2]}")|awk -F: ' {printf("'"${f[$3]}"'",$1,$2)} ' `;};B7(){ v=`grep -Fv "${v[$1]}"<<<"$v"`;};C0(){ [[ "$v" ]]&&echo "$v";};C1() { [[ "$v" ]]&&printf "${f[$1]}" "${l[$2]}" "$v";};C2() { v=`echo $v`;[[ "$v" != 0 ]]&&C1 0 $1;};C3() { v=`sed -E "$s"<<<"$v"`&&C1 1 $1;};for i in 1 2;do for j in 2 3;do eval D$i$j'(){ A'$i' $1 $2 $3; C'$j' $4;};';done;done;{ A0;A2 0 $((N1+1)) 2;C0;A1 0 $N1 1;C0;B0;C2 27;B0&&! B1&&C2 28;D12 15 37 25 8;A1 0 $((N1+2)) 3;C0;D13 0 $((N1+3)) 4 3;D23 0 $((N1+4)) 5 4;for i in 0 1 2;do D13 0 $((N1+5+i)) 6 $((N3+i));done;D13 1 10 7 9;D13 1 11 8 10;D22 2 12 9 11;D12 3 13 10 12;D23 4 19 44 13;D23 5 14 12 14;D22 6 36 13 15;D22 7 37 14 16;D23 8 15 38 17;D22 9 16 16 18;B1&&{ D22 11 17 17 20;for i in 0 1;do D22 28 $((N2+i)) 45 $((N4+i));done;};D22 12 44 54 45;D22 12 39 15 21;A1 13 40 18;B2 4;B3 4 0 19;A3 14 6 32 0;B4 0 5 11;A1 17 41 20;B7 5;C3 22;B4 4 6 21;A3 14 7 32 6;B4 0 7 11;B3 4 0 22;A3 14 6 32 0;B4 0 8 11;B5 7 8;B1&&{ A2 19 26 23;B7 7;C3 23;};A2 18 26 23;B7 7;C3 24;A2 4 20 21;B7 6;B2 9;A4 14 7 52 9;B2 10;B6 9 10 4;C3 25;D13 4 21 24 26;B4 4 12 26;B3 4 13 27;A1 4 22 29;B7 12;B2 14;A4 14 6 52 14;B2 15;B6 14 15 4;B3 0 0 30;C3 29;A1 4 23 27;B7 13;C3 30;D13 24 24 32 31;D13 25 37 32 33;A2 23 18 28;B2 16;A2 16 25 33;B7 16;B3 0 0 34;B2 21;A6 47 21&&C0;B1&&{ D13 21 0 32 19;D13 10 42 32 40;D22 29 35 46 39;};D13 14 1 48 42;D12 34 43 53 44;D22 0 $((N1+8)) 51 32;D13 4 8 41 6;D12 26 28 35 34;D13 27 29 36 35;A2 27 32 39&&{ B2 19;A2 33 33 40;B2 20;B6 19 20 3;};C2 36;D23 33 34 42 37;B1&&D23 35 45 55 46;D23 32 31 43 38;D12 36 47 32 48;D13 20 42 32 41;D13 14 2 48 43;D13 4 5 32 1;D22 4 4 50 0;D13 4 3 32 5;D12 26 48 49 49;B3 4 22 57;A1 26 46 56;B7 22;B3 0 0 58;C3 47;D23 22 9 37 7;A7;C2 2;} 2>/dev/null|pbcopy;exit 2>&-
Copy the selected text to the Clipboard by pressing the key combination command-C.
7. Launch the built-in 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.
Click anywhere in the Terminal window and paste by pressing command-V. The text you pasted should vanish immediately. If it doesn't, press the return key.
8. If you see an error message in the Terminal window such as "Syntax error" or "Event not found," enter
exec bash
and press return. Then paste the script again.
9. If you're logged in as an administrator, you'll be prompted for your login password. Nothing will be displayed when you type it. You will not see the usual dots in place of typed characters. Make sure caps lock is off. Type carefully and then press return. You may get a one-time warning to be careful. If you make three failed attempts to enter the password, the test will run anyway, but it will produce less information. In most cases, the difference is not important. If you don't know the password, or if you prefer not to enter it, press the key combination control-C or just press return three times at the password prompt. Again, the script will still run.
If you're not logged in as an administrator, you won't be prompted for a password. The test will still run. It just won't do anything that requires administrator privileges.
10. The test may take a few minutes to run, depending on how many files you have and the speed of the computer. A computer that's abnormally slow may take longer to run the test. While it's running, there will be nothing in the Terminal window and no indication of progress. Wait for the line
[Process completed]
to appear. If you don't see it within half an hour or so, the test probably won't complete in a reasonable time. In that case, close the Terminal window and report the results. No harm will be done.
11. When the test is complete, quit Terminal. The results will have been copied to the Clipboard automatically. They are not shown in the Terminal window. Please don't copy anything from there. All you have to do is start a reply to this comment and then paste by pressing command-V again.
At the top of the results, there will be a line that begins with the words "Start Time." If you don't see that, but instead see a mass of gibberish, you didn't wait for the "Process completed" message to appear in the Terminal window. Please wait for it and try again.
If any private information, such as your name or email address, appears in the results, anonymize it before posting. Usually that won't be necessary.
12. When you post the results, you might see the message, "You have included content in your post that is not permitted." It means that the forum software has misidentified something in the post as a violation of the rules. If that happens, please post the test results on Pastebin, then post a link here to the page you created.
Note: This is a public forum, and others may give you advice based on the results of the test. They speak only for themselves, and I don't necessarily agree with them.
Copyright © 2014 by Linc Davis. As the sole author of this work, I reserve all rights to it except as provided in the Use Agreement for the Apple Support Communities website ("ASC"). Readers of ASC may copy it for their own personal use. Neither the whole nor any part may be redistributed.

[Dell E5510] Blank screen during and after boot

Hello,
I performed system update some time ago (2 or 3 weeks) and left my computer unused. Today I tried to power on it and I was very surprised, because I didn't see anything on screen during boot and after it. I rebooted computer in fallback mode (I also added "i915.modeset=0" to kernel init args), and I saw command line. Then I updated whole system and rebooted it again - no luck again blank screen during boot and after.
I rebooted it one more time, but with default kernel (I disabled KMS again via GRUB command line) and I saw systemd output during boot. I teems, that all services were started successfully, because all messages were prefixed with "OK". Then I cloud only use command line, because Gnome 3 was not running under seventh console.
Any idea what is going one here?

Hi there Sudarshan21,
I would recommend taking a look at the troubleshooting steps found in the article below.
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/ts2570
-Griff W.

Windows 7 - Blue screen of death after Boot Camp install

Hello! I have done some searches with no answers, so...
After installing Windows 7 from scratch I then install Boot Camp 3.0 which then leads to the Windows blue screen of death upon reboot. I then have to recover Windows to the previous state prior to installing Boot Camp.
Help!?

Most likely, Apple HFS read-only, which is AppleHFS.sys and AppleMNT.sys - rename those and see.
You might want to run chkdsk after all this to make sure there are no errors with the drive and file system.
Windows Explorer will not accept HFS+ filenames with special characters and will "green bar" and hang when it does, too.
The faulty HFS driver is a valid concern.
Rename AppleHFS.sys and AppleMNT.sys
By doing the following you will disable HFS mount / read mode on windows XP, Vista, 7.
Navigate to c:/windows/system32/drivers/AppleMNT.sys, rename the AppleMNT.sys file to something like AppleMNT_keep.sys or something of your likings.
The faulty HFS driver is a valid concern. It seems to happen on many systems.
You find it in Windows/system32/drivers/AppleHFS.sys
Renaming to AppleHFS_disabled.sys will avoid the blue screens until you have found another solution or Apple updates Bootcamp 3
After renaming both myself because they are no longer "*.sys" or something? they are gone. In my case AppleHFS prevented Windows Backup from running to end and was causing error "some files skipped" and while some might find reading convenient, I prefer Windows not have even read-only access.
You can probably do better with MacDrive, or probably Paragon's HFS driver, to read AND write if needed, to HFS from Windows.

Windows 7 Black screen with cursor after boot camp partition

So I realise this is a problem that was plaguing people a few years back. So I'll go from the very start.
I've downloaded a copy of windows 7 professional 64bit from the Microsoft website. My optical/CD drive isn't working, so I've been unable to use it
to install windows. I decided I'd try booting from my USB. So I have the ISO file and formatted my USB and I've downloaded the latest drivers for boot camp assistant on my mac (version 5.0.4) I'm up to date with every update for my mac. Now, I do realise that Apple doesn't recommend using a USB to load windows, but I watched this http://www.youtube.com/watch?v=8z1gqw0ougo and it explained how to get the checkbox up when you're in boot camp so you can run from your USB.
My problem now, is that straight after I have partitioned my hard drive, it goes on to install windows but upon restarting it reaches "the black screen of death" with just the white cursor blinking. I've tried multiple times and keep getting the same result. I've even tried what Apple suggested and only have one USB device plugged in http://support.apple.com/kb/TS4536
The details for my mac are as follows:
Model Name:
iMac
Model Identifier:
iMac10,1
Processor Name:
Intel Core 2 Duo
Processor Speed:
3.06 GHz
Number of Processors:
1
Total Number of Cores:
2
L2 Cache:
3 MB
Memory:
4 GB
Bus Speed:
1.07 GHz
Boot ROM Version:
IM101.00CC.B00
SMC Version (system):
1.53f13
Serial Number (system):
W800992A5PE
Hardware UUID:
A108E54E-3C53-5AF8-BFDF-2CF7ED567A74
and it's a late 2009 model.

I have solved this issue now but seem to have encountered another one. I solved the above issue simply by keep on trying time and time again, partitioning the hard drive and trying to install windows 7.
Anyway, I have encountered this error: windows setup could not apply the configuration set. The WINDOWS folder cannot be found.
Please help!

Can not boot into OSX after boot camp installation and resizing of Macintosh HD

So from the beginning what I was trying to do was set up my iMac (27-inch, Late 2013) with boot camp so that I could play some old windows based games that can not be played in Parallels.
I went through the Boot camp process and everything set up just fine.
I had both OS X Yosemite 10.10.2 and Windows 8 Professional running but as I was installing games on to boot camp I discovered I did not allocate enough space and needed to extend the Boot Camp partition.
I used boot camp utility to set OS X as the default start up disk and had it restart
I launched into OS X and used Disk Utility to shrink Macintosh HD another 120GB
Restarted again holding option and launched into Windows
Used the disk management in windows to try and extend the boot camp partition into the unallocated space.
It was not an option to extend it so I tried to create a new simple volume from the unallocated space then delete it and try to extend it again.
It still was not an option.
From there I went to restart again while holding option and the only options I had were 10.10 Recovery and Windows
I tried using disk utility in recovery and Macintosh hd now only showed disk0s2
I tried to verify and it could not verify
I tried to repair and it could not repair.
I put the iMac in target disk mode and using a thunderbolt cable I tried using disk utility from my MacBook Pro (13-inch Mid 2012)
Verifying volume “disk2s2”Verifying file system.** /dev/rdisk2s2
Invalid BS_jmpBoot in boot block: 000000
File system check exit code is 8.Error: This disk needs to be repaired. Click Repair Disk.
Verify and Repair volume “disk2s2”Repairing file system.** /dev/rdisk2s2
Invalid BS_jmpBoot in boot block: 000000
File system check exit code is 8.Updating boot support partitions for the volume as required.Error: Disk Utility can’t repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files.
This is the same error I got on my iMac
I used terminal diskutil list and got:
/dev/disk2
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *1.0 TB     disk2
   1:                        EFI EFI                     209.7 MB   disk2s1
   2:       Microsoft Basic Data                         799.3 GB   disk2s2
   3:                  Apple_HFS Recovery HD             650.0 MB   disk2s3
   4:       Microsoft Basic Data BOOTCAMP                70.3 GB    disk2s4
I can see that Macintosh HD was disk2s2 but it now shows its Microsoft Basic Data.
I did not format this partition and it was working fine till I restarted the computer after resizing Macintosh HD.
I am not sure what I can do to fix this.
I've found multiple articles about similar issues, but the issue thet they have was that they could not boot to Windows instead of my issue not booting to OS X

****************    Update    *****************
From the Windows Partition using Disk Management I can see that the drive is still labeled Macintosh HD and that all of my data is there.
I have a complete backup so i'm not worried so much about the data.
What I'm most interested in is trying to solve this issue because I'd like to continue using boot camp and I actually work with mac computers and would like to be able to help others if this issue arrises again.

External HD "Not Readable" after Boot Camp Installation

After installing Windows XP on my Mac, I switched back over to OS X and tried to access my external hard drive which greeted me with the message: "The disk you inserted is not readable by this computer." I assume that the Boot Camp process must've affected the external drive and made it incompatible with OS X. The external does show up in Disk Utility, but there are no options to repair the disk, only erase. Can anyone tell me how to reformat the drive, without losing all of the precious data on the disk, for OS X?

XP can't see Mac OS file system.
There is your drive, and your volume_name on the left side column. You have to click on volume_name and select the tab for Repair.
Best to backup before installing or updating any OS, and leave everything you don't need disconnected.
I doubt anything changed, should not have.

After Boot Camp installation, Kernel Panic when launching OSX partition

Hey guys. I have a mac mini (early 2009) with Mac OSX 10.6.2 running. I installed XP Professional Sp3 using the Boot Camp Assistant with no errors. It works fine. However, whenever I launch the OSX partition, even in single-user mode, it Kernel Panics. What can I do to stop this?
I have a legal copy of XP and OSX, by the way.

this does not sound like a problem with anything on your drive then but rather a firmware issue. just to make sure, how are you booting from the DVD? reboot and hold "c" at the chime. any luck? if not reboot and hold option at the chime. this ought to boot you into startup disk manager where you can choose what to boot from.

Driver BSOD on Startup after Boot Camp 3.0 Upgrade.

Hello all you support board types. I have a little bit of a problem these days.
Yesterday I went and installed the Boot Camp 3.0 Drivers from my shiny new Snow Leopard Disc. The install went off without a hitch and I hit restart to complete the install.
And then I hit a nice big blue screen of death.
Here is the info from the blue screen:
Driver in Question: NV4_DISP (sounds like graphics card driver to me) thrown into an infinite loop.
*STOP: 0x000000EA (0x8A46E428, 0X8A91A1B8, 0XF78C3CBC, 0X0000000)
NV4_DISP
It will not start up with multiple restarts. It will start in safe mode. You cannot reinstall the Boot Camp drivers while in safe mode (a feature, it seems, of safe mode, natch).
Any ideas?
Thanks.

Your assupmtion is right....its a problem with the nvidia display driver.
Try booting in safemode and deinstalling the driver. This should at least make u able to boot normally. Then try to install one of those modded-drivers. I've been using those for a long time without problems

IMac Freezes on blue screen during startup after installing itunes 9.2

I let iTunes update to 9.2 today on my 27" iMac quad and when it restarted itself it froze on startup at the blue screen. The blue screen switches between two different shades but never exits that loop. I CAN boot in safe mode (which is what i'm doing right now).
Thus far i've tried:
- reinstalling itunes
- resetting my pram
- uninstalling itunes
- removing itunes startup app
I still cannot boot normally. Help!

You might try booting from your install CD and running disk repair in Disk Utility.

Windows 7 Pro not finding network connections after boot camp installation. Is there something special we have to do to get the network (wired and wireless) set up?

Any suggestions for getting the network connections working on Windows 7 Pro running on a Mac Min with OSX Lion?

tim-bob wrote:
Any suggestions for getting the network connections working on Windows 7 Pro running on a Mac Min with OSX Lion?
If you haven't yet installed the Windows Support Software, that's probably why, so install it now.

MacBook stuck at gray screen during start up

Lately my 2008 model MacBook has been freezing up. When I shut it down, it starts up just fine, however, the last two times I've shut it down, it gets stuck at the gray screen during start up. The first time, I was unsuccessful with a Safe Boot, however I was successful using CommandOption+PR to reset my NVRAM/PRAM. It has been working fine for the past two days, but it froze again this evening. I tried Safe Booting, removing peripherals, resetting the NVRAM/PRAM and I even was able to repair the disk and the permissions, but still, I am unsuccessful during a start up.
When I did try to "Perform an Archive and Install installation of Mac OS X", it said my computer was not able to install 10.5 (I run 10.6) because it did not meet the system requirements.
As a final effort, I tried doing another SafeBoot, this time viewing the status. It has been stuck at a console screen that reads "disk0s2: media is not present...." for about ten minutes now, if that helps at all.
Any advice on how to fix this would be highly appreciated. And yes, I have read the Gray screen article
Zach Irwin

Your hard drive may be damaged or requires reformatting. You might try this to start:
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.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
If you still are unable to restart or if DU cannot repair the drive or the SMART status is not "verified" then you can try reformatting the drive to see if that fixes the problem, otherwise you will have to replace the drive.
Extended Hard Drive Preparation
1. 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.)
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID (for Intel Macs) or APM (for PPC Macs) then click on the OK button. Click on the Partition button and wait until the process has completed.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.
And, you cannot do an Archive and Install of Leopard over a Snow Leopard installation. You have to reinstall using the Snow Leopard installer.

IMac G5 gray screen on startup and fan maxes out!! Help!

I've heard this problem quite a bit on several forums, but have yet to find an answer. I Need help!! My iMac G5 delays on startup ( i hit the button, and startup doesn't actually start for a minute or 2), and when it does, i get the gray screen, and then after another minute, the fan goes crazy and maxed out until I manually shut down. I reset the memory, and check the LED lights, (all came on normally). What's going on here!? I appreciate any help

If the troubleshooting solutions listed in Mac 101 were of no help & you found no solutions to your problem(s) listed in the various Knowledge Base Articles see if the following suggestions are of any help:
Except for the keyboard & mouse, disconnect all devices/peripherals from your computer.
Step 1: Restart into Safe Mode by holding down the Shift key during startup. The comp will run a complete & lengthy file systtem check, then start up w/only the required kerenel extensions & w/o running any Startup items tthat you installed.
If you are running OS 10.4 it will also perform some font finagling.
Try starting up normally again. If you are still stalling, restart in Safe Mode & move on to Step 2...........
Mac OS X: Starting up in Safe Mode
Step 2: Open Library>Startup items folder-the root level Library, not the one in your user name folder.
Look for potentially problematic 3rd party items such as virus scanning software components, etc. Remove 1 or more items to a location outside the Library folder, such as the Desktop, then restart normally & see if your Mac stalls. It it does, try removing all the items in the Startup items folder & restart. If all’s now well, place the items back into the Startup items folder 1 by 1, restarting each time you put one back. If and/or when the stall resurfaces, you just identified the faulty component.
If the above does not work, then it’s time to move on to Step 3.................
Step 3: WARNING-This step can be tedious-removing .plist files from the /Library/Preferences folder.
Remove the entire Preferences folder from the Library folder on your startup drive then place the files back 1 by 1 until you see the problem return. *The Mac will automatically create a new Preferences folder in the Library folder*
Alternatively, you can take half of the items out (all non-Apple .plist file, for example), restart to see if your Mac stalls, then move to a smaller set of items, repeatingn the process until the culprit is found.
Or you can use Preferential Treatment which is a FREE utility that does all the work for you.
Hang in there & good luck!!!!

My Mac is producing gray screen at startup and crashes. I'm afraid that everything explode and disappear, and can no longer connect and work with my Mac. Can anyone help ?? Thank you.

My Mac is producing gray screen at startup and crashes. I'm afraid that everything explode and disappear, and can no longer connect and work with my Mac. Can anyone help ??
Thank you.
Problem description:
gray screen at startup and crashes
EtreCheck version: 2.1.1 (104)
Report generated 6 de dezembro de 2014 13:29:43 BRST
Hardware Information: ℹ️
MacBook Pro (15-inch, Early 2011) (Verified)
MacBook Pro - model: MacBookPro8,2
1 2.2 GHz Intel Core i7 CPU: 4-core
4 GB RAM
BANK 0/DIMM0
2 GB DDR3 1333 MHz ok
BANK 1/DIMM0
2 GB DDR3 1333 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
AMD Radeon HD 6750M - VRAM: 1024 MB
Color LCD 1440 x 900
Intel HD Graphics 3000 - VRAM: 384 MB
System Software: ℹ️
Mac OS X 10.6.8 (10K549) - Uptime: 0:31:56
Disk Information: ℹ️
TOSHIBA MK7559GSXF disk0 : (698,64 GB)
S.M.A.R.T. Status: Verified
- (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / : 749.81 GB (378.70 GB free)
MATSHITADVD-R   UJ-898
USB Information: ℹ️
Apple Inc. FaceTime HD Camera (Built-in)
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Inc. BRCM2070 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Computer, Inc. IR Receiver
Thunderbolt Information: ℹ️
Apple, Inc. MacBook Pro
Problem System Launch Daemons: ℹ️
[not loaded] org.samba.winbindd.plist [Support]
Launch Agents: ℹ️
[running] com.babylon.activation.plist [Support]
[loaded] com.divx.dms.agent.plist [Support]
[loaded] com.divx.update.agent.plist [Support]
[loaded] com.hp.help.tocgenerator.plist [Support]
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist [Support]
[loaded] com.microsoft.office.licensing.helper.plist [Support]
User Launch Agents: ℹ️
[loaded] com.adobe.ARM.[...].plist [Support]
[loaded] com.facebook.videochat.[redacted].plist [Support]
[loaded] com.google.keystone.agent.plist [Support]
[running] com.skype.c2c_service.plist [Support]
User Login Items: ℹ️
iTunesHelper UNKNOWNHidden (missing value)
FaceboxPro Aplicativo (/Applications/FaceboxPro.app)
Safari Aplicativo (/Applications/Safari.app)
Octoshape Aplicativo (/Users/[redacted]/Library/Octoshape/Octoshape.app)
uTorrent UNKNOWN (missing value)
Dropbox Aplicativo (/Applications/Dropbox.app)
Inkscape UNKNOWN (missing value)
RealPlayer Downloader Agent Aplicativo (/Users/[redacted]/Library/Application Support/RealNetworks/RealPlayer Downloader Agent.app)
HP Product Research Aplicativo (/Library/Application Support/Hewlett-Packard/Customer Participation/HP Product Research.app)
Internet Plug-ins: ℹ️
OVSHelper: Version: 1.1 [Support]
Google Earth Web Plug-in: Version: 7.1 [Support]
Flip4Mac WMV Plugin: Version: 2.4.4.2 [Support]
RealPlayer Plugin: Version: Unknown [Support]
AdobePDFViewerNPAPI: Version: 10.1.12 [Support]
FlashPlayer-10.6: Version: 15.0.0.239 - SDK 10.6 [Support]
DivX Web Player: Version: 3.1.1.9 - SDK 10.6 [Support]
Silverlight: Version: 5.1.30514.0 - SDK 10.6 [Support]
Flash Player: Version: 15.0.0.239 - SDK 10.6 [Support]
QuickTime Plugin: Version: 7.6.6
iPhotoPhotocast: Version: 7.0 - SDK 10.7
SharePointBrowserPlugin: Version: 14.1.2 [Support]
AdobePDFViewer: Version: 10.1.12 [Support]
JavaAppletPlugin: Version: 13.9.8 - SDK 10.6 Check version
User internet Plug-ins: ℹ️
npsf_uni: Version: sf 3.3.2.1 [Support]
OctoshapeWeb: Version: 1.0 - SDK 10.8 [Support]
Safari Extensions: ℹ️
Searchme Adware! [Remove]
Skype Click to Call
iSkyDeluxe
TED HTML5 video playe
Audio Plug-ins: ℹ️
iSightAudio: Version: 7.6.6
3rd Party Preference Panes: ℹ️
Flash Player [Support]
Flip4Mac WMV [Support]
Skype Click to Call [Support]
Tuxera NTFS [Support]
Time Machine: ℹ️
Time Machine information requires OS X 10.7 "Lion" or later.
Top Processes by CPU: ℹ️
      5% WindowServer
      4% DivXMediaServer
      1% fontd
      0% RealPlayer Downloader Agent
      0% WebProcess
Top Processes by Memory: ℹ️
296 MB WebProcess
202 MB FaceboxPro
185 MB Microsoft PowerPoint
163 MB Safari
137 MB Microsoft Word
Virtual Memory Information: ℹ️
843 MB Free RAM
1.76 GB Active RAM
706 MB Inactive RAM
978 MB Wired RAM
577 MB Page-ins
0 B Page-outs
Diagnostics Information: ℹ️
Dec 6, 2014, 12:58:24 PM Self test - passed
Dec 6, 2014, 12:23:11 PM Kernel_2014-12-06-122311_MacBook-Pro-de-...panic [Details]
Dec 6, 2014, 07:08:28 AM PluginProcess_2014-12-06-070828_MacBook-...crash
Dec 5, 2014, 05:24:39 PM WebProcess_2014-12-05-172439_MacBook-Pro...crash
Dec 5, 2014, 10:45:59 AM Kernel_2014-12-05-104559_MacBook-Pro-de-...panic [Details]
Dec 5, 2014, 10:18:14 AM Kernel_2014-12-05-101814_MacBook-Pro-de-...panic [Details]
Dec 3, 2014, 08:28:35 PM locationd_2014-12-03-202835_localhost.crash
Dec 5, 2014, 10:25:44 AM Kernel_2014-12-05-102544_MacBook-Pro-de-...panic [Details]

Startup - Gray, Blue or White screen at boot, w/spinner/progress bar
Startup Issues - Resolve
Startup Issues - Resolve (2)

Boot Camp Installation: Definition of, and insights into "External Drives"?

I'm recovering from a logic board failure. One casualty was that I lost my prior Boot Camp installation of Windows on my main internal hard drive. :-( Wondering if I can install Windows anywhere other than the main internal hard drive so I can maximize space on my OSX main internal drive?
From what I've gathered, installing Windows 7 Boot Camp is very difficult (and perhaps impossible?) on an external hard drive. However, what's not entirely clear is what constitutes an "external drive".
Questions:
1. Can I install a bootable installation of Windows 7 using Boot Camp (obviously not running OSX in this scenario) on either the:
A) Data Doubler 7,200 drive
or
B) Express Card 34 SSD drive
2. Can I also install Parallels (on the main internal OSX drive), then while in OSX launch (a much slower) Windows from location A or B?
Context:
1. On a late 2011 MBP 17' (version 8,3), I've replaced the stock hard drive (7,200 rpm) with a much faster OWC SSD Drive. (Awesome upgrade, btw!)
2. The internal apple dvd device was removed and the stock hard drive was inserted in this location using OWC Data Doubler. (Also, very nice.) An extra challenge here is that the dvd drive is now an external device. I have a Windows 7 install disc, but I'm not sure if it will be recognized during the installation process?
3. This model MBP has an ExpressCard 34 slot, for which I can buy an SSD drive. Never used this slot and have read mixed reports on boot ability.
Any and all insights greatly appreciated!

Yoüf wrote:
Many thanks for the helpful response, Loner T. I think I've got it. To install Windows through BCA on the Optibay drive, I temporarily move it to the main SATA bay. I can then temporarily put the DVD drive back in the Optibay. So here's a question: In doing this, I would no longer have an OSX boot drive (since I'm temporarily removing my OSX boot SSD). It's been a while since I used BCA, so my memory is fuzzy (sorry), but does the BCA process need a working OSX install on the drive in the SATA bay?
The SSD with OSX boot is normally (for your specific scenario) kept in an external enclosure (USB/FW/TB) to boot from and run BC and partition the disk in the main SATA bay.
You mention that modifying the BC info.plist causes issues. I lost you a little here. Using the method you describe (move the Optibay drive to the SATA location, run BCA to install Windows, then move the drive back to the Optibay location), does the BC info.plist need to be modified or not? If yes, a few more details would be welcomed. If not, what prompted this thought?
If you have a functional Optical drive and the designated Windows-to-be in the proper bays, the BC info.plist modifications are unnecessary, and can cause other grief, and are best avoided.
Thanks also for the bleeptobleep post. It says to use a USB3/Thunderbolt external drive (which I do have); however, my MBP (version 8,3) only has USB2 ports. I realize that a USB2 port will read a USB3 external drive, but was wondering if this limitation is a deal breaker for a bootable Windows system, or if it just means that things will be really, really, tragically slow due to low transfer rates. Any idea on this aspect?
USB3 can cause problems for Windows 7 installer, bot not as many issues for Windows 8+. It is better to stick to USB2, but you are correct it will be slow. OSX can boot and will use RAM much more aggressively, unless it has to go back to the USB (2/3) when things may give you a beach ball. Windows 7/8 are less friendly for caching the whole OS and applications in RAM, and may be slower. A TB connection is much faster (TB2 even better).
BTW: Bummer that the ExpressCard slot can't work for booting into Windows. That would be pretty slick. I've seen some older posts by folks who were once able to do this, but seemingly only with early versions of OSX. Apparently newer OSX versions either did away with this feature, or seriously complicated the process. Would love to find a workaround if one exists.
You can test it, but may have some issues finding storage for ECards.
(Dumb question: on this forum, how are you threading comments into a quoted block of text? Are you using HTML or is there some easier way?)(((
Under the "Reply" bar at the top, there is an icon with a "quote" and a "speech" bubble, which is used to quote posts. You can either quote from a previous post, or select a line (or more) of text and click on that icon.

Gray screen during startup after boot camp installation

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