PLEASE HELP!!! I'm desperate guys, I've been unsuccessfully trying to fix my rig for 3 days, heres my problem. I took out one of my hard drives to give to my girlrfriend and did some spring cleaning of files and such on my SSD (main drive) I have windows 10 on it. Anyway after I get the other drive out my computer will no longer start, it just says "reboot and select proper boot device or insert boot media". So I take the SSD out and put in my GF's computer and boot it up and it gives me a 0xc000021a error code, I can boot off of here drive and access my drive but not boot off of my drive, I put her main drive in my computer and it works fine, so I'm assuming it has to be my drive. What I've tried, repairing windows with the windows 10 flash drive, it says it unable to, tried repairing with windows 10 on my girlfriends drive, It says everythings fine, I tried disabling legacy mode in bios, can't find it anywhere on asus p8z68-V bios, I've also tried other things but not worth mentioning please someone help I don't want to format this drive.
reboot and select proper boot device or insert boot media and 0xc000021a
- Thread starter Xinidae
- Start date
Solution
SuperSoph_WD
Glorious
- Jul 30, 2014
- 6,758
- 3
- 45,960
Welcome to the community, Xinidae!
It sounds to me like you had your HDD and your SSD plugged to the motherboard when you were installing Windows 10 on the solid-state drive. This is a common case of an OS confusion that basically scatters the system files across all the drives connected to the mobo at the time of the OS installation. You definitely won't be able to boot from the SSD on your girlfriend's computer, due to the fact that the OS is tied to the motherboard. Meaning that you need your system in order to boot properly. However, it seems like some important system files were stored on the HDD which would explain why you are unable to boot without it connected to the system.
I'd suggest you put both drives back in before starting the troubleshooting. This should make your system bootable again. Afterwards, back up all your data from both the SSD and the HDD somewhere off-site and then Clean install Widnows on the SSD. However, make sure that the SSD is the only SATA drive connected to the system at that time. Once the OS is up and running, plug the secondary drives and use them for your data. If there are system files on them, make sure you back up all your files beforehand.
Hope this helps.
SuperSoph_WD
It sounds to me like you had your HDD and your SSD plugged to the motherboard when you were installing Windows 10 on the solid-state drive. This is a common case of an OS confusion that basically scatters the system files across all the drives connected to the mobo at the time of the OS installation. You definitely won't be able to boot from the SSD on your girlfriend's computer, due to the fact that the OS is tied to the motherboard. Meaning that you need your system in order to boot properly. However, it seems like some important system files were stored on the HDD which would explain why you are unable to boot without it connected to the system.
I'd suggest you put both drives back in before starting the troubleshooting. This should make your system bootable again. Afterwards, back up all your data from both the SSD and the HDD somewhere off-site and then Clean install Widnows on the SSD. However, make sure that the SSD is the only SATA drive connected to the system at that time. Once the OS is up and running, plug the secondary drives and use them for your data. If there are system files on them, make sure you back up all your files beforehand.
Hope this helps.
SuperSoph_WD
That makes so much sense but now I'm F***ed because I wiped the HDD to give to my girlfriend and put a clean install of windows on that, so now I guess I have to back up everything and then reinstall windows... This is gonna suck but thank you so much I never would have realized that, obviously I wouldn't have wiped my drive if I knew that xD, Is there a way of repairing windows so I don't have to go through all this or is a clean install the only way?
SuperSoph_WD
Glorious
- Jul 30, 2014
- 6,758
- 3
- 45,960
Hey there again, Xinidae!
Indeed, you could try using the Windows Installation media (System Repair Disk) to repair the boot manager (BootMGR). However, I'm not sure how successful that would be. What you need to do is boot into the System Recovery Options and select Startup Repair.
If that doesn't help, open Command Prompt from the Advanced options and use these commands to, hopefully, fix the issue:
Type c: and press Enter
At the C:\ prompt, type cd boot and press Enter
At the C:\Boot prompt,
type bootrec /FixMbr and press Enter
type bootrec /FixBoot and press Enter
type bootrec /RebuildBcd and press Enter
If this doesn't work, plug your SSD to your girlfriend's computer without trying to boot from it. Connect it to the next available SATA port and try to access it as a secondary drive in her system. This should give you access to your personal files, so that you would be able to back them up there. Then, you shouldn't fear the clean install. Although reinstalling all your applications is also a struggle, it's inevitable.
Keep me posted if you need further assistance!
Cheers,
SuperSoph_WD
Indeed, you could try using the Windows Installation media (System Repair Disk) to repair the boot manager (BootMGR). However, I'm not sure how successful that would be. What you need to do is boot into the System Recovery Options and select Startup Repair.
If that doesn't help, open Command Prompt from the Advanced options and use these commands to, hopefully, fix the issue:
Type c: and press Enter
At the C:\ prompt, type cd boot and press Enter
At the C:\Boot prompt,
type bootrec /FixMbr and press Enter
type bootrec /FixBoot and press Enter
type bootrec /RebuildBcd and press Enter
If this doesn't work, plug your SSD to your girlfriend's computer without trying to boot from it. Connect it to the next available SATA port and try to access it as a secondary drive in her system. This should give you access to your personal files, so that you would be able to back them up there. Then, you shouldn't fear the clean install. Although reinstalling all your applications is also a struggle, it's inevitable.
Keep me posted if you need further assistance!
Cheers,
SuperSoph_WD
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