Optiplex 755

MT = mini tower.  Though the size isn't always needed, somebody can't live without it.  But I will mention some smaller models have less sata ports.  Not that we can always assume, but didn't we already establish your 755 is an MT in your other posts?

Sounds like you have a dead port on your MB (motherboard).  Did you try any other drives in it, like a DVD drive?

If you use F12 at startup to get to the boot menu, I take it your drive doesn't show there either.

I don't know if a 755 can take 2 bootable HDD's.  But it still sounds like you have a dead sata port; especially if you tried it by itself without any other bootable drives plugged in.

You're welcome.  I just got done editing my post when your's popped in.

Definitely a good idea getting a cable with a 90 degree plug.

Hard to say from here if your current cable is bad.  I noticed SATA data cables are more durable than some audio wires.  Lower quality audio wires, accidentally pull on it or something and then it gets finicky or doesn't work at all.

the I had it plugged into the wrong socket. I probably should have guessed the white label went to the white socket. So now it shows up in bios, but not in the boot sequence.  Boot only capable of 3 choices?? and there is no floppy.

.

I thought my pictures showed that.

Doesn’t show in F2 boot sequence or in F12 settings/ boot sequence.

Bios version = A22 (6/11/12)

processor Intel Core2 Duo CPU

64-bit= Yes (Intel Em64T)

Old drive 65GB is windows, new one 1TB is Linux,

both drives work in first slot, neither in 2nd. 

Here’s another pic.  of inside. white socket has white print next to it . I had the plug in the

one above the print.

I'm sure your photos will show once approved by a moderator.

If I have this right, you tried the 3rd port and the drive doesn't show in the Boot Menu or Boot Sequence, but shows in BIOS.  Any luck with the 4th?

You said the drive shows in BIOS but not the Boot Menu.  Does it show in Boot Sequence in BIOS?

Something that came to mind is what version of BIOS do you have or when it was last updated?  A22 is the latest BIOS for the 755 as far as I know.  I don't know that updating BIOS for sure is a fix, but is commonly recommended before doing certain things on the computer.

Is it the Linux or Windows drive that the Boot Menu is not seeing?

"...white label goes into the white socket." - What white label were you referring to?

Please keep in mind your latest photos don't show yet. - In case they have answers.

I thought you were unable to get the drive in question to fully show up while plugged into the 3rd port (SATA-2), and not at all in the 2nd (SATA-1).

Since you marked your last post as solved, does that mean both drives are fully working?

such basic questions,

why,  why use more SATA ports, or slots.

Ports (hardware) can fail,  and you then try another

your photos show MT PC,  you fail to know not all cases uses the same motherboard and even unique BIOS on the smallest of cases THAT IS WAY FOLKS ask, what PC DO YOU HAVE...

and this PC has no BOOT manager in BIOS, period. (other than forcing boot drives dead or trying F12, forced boots)

now we know it is 755MT PC and the real job or goal is DUAL booting, W7 and Linux

and that w10 is not an option,  good luck keeping w7 going into the future. W7 will become a virus magnet.

deleted, no interest at all in W10  on that old CORE2  CPU.

....................................  you are not forcing hard boots, in BIOS, so case solved.

I didn't mean to mark this solved. Sorry.

Both drives work fine in SATA 0 slot. I don't believe there is a problem with either drives.

I now have the 1Tb drive in SATA 2 slot and it shows up in setup, but not in boot list.

Have not tried SATA 3 because I have space for only two drives in the computer.

Going to now work on posting pictures of bios pages, but couldn't last night.

"Cant do pictures, the photo button will not bring up iPad pictures."

Getting pictures from an IPad requires WINDOWS and ITUNES and supported model.

LINUX is not an option for using an IPAD. If an iPhone, iPad, or iPod touch isn’t recognized in iTunes on Windows, AMDS may need to be restarted.

https://support.apple.com/en-au/HT204275

https://support.apple.com/kb/DL837?viewlocale=en_US&locale=en_US

What's New in QuickTime 7.7.9
QuickTime 7.7.9 contains security updates and is recommended for all QuickTime 7 users on Windows. For information on the security content of this update, please visit this website: http://support.apple.com/kb/HT201222

Apple’s mobile device support

https://support.apple.com/en-us/HT203188

https://support.apple.com/en-us/HT201413
The following might happen if your security software is causing an issue with iTunes:

Your iPhone, iPad, or iPod touch aren't recognized in iTunes, or they won't back up, restore, update, sync, or activate.
You see iTunes Errors 4, 6, 1630–1641, 3000–3999, or 9000–9999.*
You can’t connect to iTunes Store to buy or download content.
iTunes won’t open.

Cant do pictures, the photo button will not bring up iPad pictures.

SATA0 is 65Gb drive, ON.

SATA1 is DVD, ON

SATA 2 is 1Tb drive, ON.

SATA3 empty, OFF. 

Boot up page picture was OK. shows 3 boot options.