External harddisks not recognized when switching on the harddisks 1 to 12 seconds after the PC, OK otherwise....












0















Attached to my Asus PC (running Win 8.1) is an USB case holding 4 hard disks (JBOD).



When I switch on the harddisks first, and then the PC, the hard disks are recognized.



When I switch on the PC first and the hard disks later, the hard disks are not seen (even when waiting for hours) - unless I wait for about 12 seconds to switch on the disks, then they are seen.



What does cause this behavior, is it a BIOS issue?










share|improve this question

























  • What happens when you just disconnect and reconnect the USB cable?

    – Kamil Maciorowski
    Mar 8 '18 at 20:35











  • What are you saying?   That, if you boot your computer at 1:00:00, the hard disks are recognized if you turn them on before 1:00:00 or after 1:00:12, but not between 1:00:00 and 1:00:12?

    – Scott
    Mar 8 '18 at 20:44











  • @Scott, yes, exactly. If they are already turned on when the PC is switched on, the case's disk access LEDs are beginning to blink quite quickly, a matter of maybe 2 seconds. The PC is a fast Intel i7. If the case is turned on about 12 seconds after the PC, the LEDs begin to flash quite immediately. Turning it on anywhere between 1 and less than these 12 seconds: no hard disks available, no matter how long I wait.

    – Herb
    Mar 9 '18 at 4:27


















0















Attached to my Asus PC (running Win 8.1) is an USB case holding 4 hard disks (JBOD).



When I switch on the harddisks first, and then the PC, the hard disks are recognized.



When I switch on the PC first and the hard disks later, the hard disks are not seen (even when waiting for hours) - unless I wait for about 12 seconds to switch on the disks, then they are seen.



What does cause this behavior, is it a BIOS issue?










share|improve this question

























  • What happens when you just disconnect and reconnect the USB cable?

    – Kamil Maciorowski
    Mar 8 '18 at 20:35











  • What are you saying?   That, if you boot your computer at 1:00:00, the hard disks are recognized if you turn them on before 1:00:00 or after 1:00:12, but not between 1:00:00 and 1:00:12?

    – Scott
    Mar 8 '18 at 20:44











  • @Scott, yes, exactly. If they are already turned on when the PC is switched on, the case's disk access LEDs are beginning to blink quite quickly, a matter of maybe 2 seconds. The PC is a fast Intel i7. If the case is turned on about 12 seconds after the PC, the LEDs begin to flash quite immediately. Turning it on anywhere between 1 and less than these 12 seconds: no hard disks available, no matter how long I wait.

    – Herb
    Mar 9 '18 at 4:27
















0












0








0








Attached to my Asus PC (running Win 8.1) is an USB case holding 4 hard disks (JBOD).



When I switch on the harddisks first, and then the PC, the hard disks are recognized.



When I switch on the PC first and the hard disks later, the hard disks are not seen (even when waiting for hours) - unless I wait for about 12 seconds to switch on the disks, then they are seen.



What does cause this behavior, is it a BIOS issue?










share|improve this question
















Attached to my Asus PC (running Win 8.1) is an USB case holding 4 hard disks (JBOD).



When I switch on the harddisks first, and then the PC, the hard disks are recognized.



When I switch on the PC first and the hard disks later, the hard disks are not seen (even when waiting for hours) - unless I wait for about 12 seconds to switch on the disks, then they are seen.



What does cause this behavior, is it a BIOS issue?







hard-drive boot bios






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Mar 8 '18 at 14:35







Herb

















asked Mar 8 '18 at 14:01









HerbHerb

498520




498520













  • What happens when you just disconnect and reconnect the USB cable?

    – Kamil Maciorowski
    Mar 8 '18 at 20:35











  • What are you saying?   That, if you boot your computer at 1:00:00, the hard disks are recognized if you turn them on before 1:00:00 or after 1:00:12, but not between 1:00:00 and 1:00:12?

    – Scott
    Mar 8 '18 at 20:44











  • @Scott, yes, exactly. If they are already turned on when the PC is switched on, the case's disk access LEDs are beginning to blink quite quickly, a matter of maybe 2 seconds. The PC is a fast Intel i7. If the case is turned on about 12 seconds after the PC, the LEDs begin to flash quite immediately. Turning it on anywhere between 1 and less than these 12 seconds: no hard disks available, no matter how long I wait.

    – Herb
    Mar 9 '18 at 4:27





















  • What happens when you just disconnect and reconnect the USB cable?

    – Kamil Maciorowski
    Mar 8 '18 at 20:35











  • What are you saying?   That, if you boot your computer at 1:00:00, the hard disks are recognized if you turn them on before 1:00:00 or after 1:00:12, but not between 1:00:00 and 1:00:12?

    – Scott
    Mar 8 '18 at 20:44











  • @Scott, yes, exactly. If they are already turned on when the PC is switched on, the case's disk access LEDs are beginning to blink quite quickly, a matter of maybe 2 seconds. The PC is a fast Intel i7. If the case is turned on about 12 seconds after the PC, the LEDs begin to flash quite immediately. Turning it on anywhere between 1 and less than these 12 seconds: no hard disks available, no matter how long I wait.

    – Herb
    Mar 9 '18 at 4:27



















What happens when you just disconnect and reconnect the USB cable?

– Kamil Maciorowski
Mar 8 '18 at 20:35





What happens when you just disconnect and reconnect the USB cable?

– Kamil Maciorowski
Mar 8 '18 at 20:35













What are you saying?   That, if you boot your computer at 1:00:00, the hard disks are recognized if you turn them on before 1:00:00 or after 1:00:12, but not between 1:00:00 and 1:00:12?

– Scott
Mar 8 '18 at 20:44





What are you saying?   That, if you boot your computer at 1:00:00, the hard disks are recognized if you turn them on before 1:00:00 or after 1:00:12, but not between 1:00:00 and 1:00:12?

– Scott
Mar 8 '18 at 20:44













@Scott, yes, exactly. If they are already turned on when the PC is switched on, the case's disk access LEDs are beginning to blink quite quickly, a matter of maybe 2 seconds. The PC is a fast Intel i7. If the case is turned on about 12 seconds after the PC, the LEDs begin to flash quite immediately. Turning it on anywhere between 1 and less than these 12 seconds: no hard disks available, no matter how long I wait.

– Herb
Mar 9 '18 at 4:27







@Scott, yes, exactly. If they are already turned on when the PC is switched on, the case's disk access LEDs are beginning to blink quite quickly, a matter of maybe 2 seconds. The PC is a fast Intel i7. If the case is turned on about 12 seconds after the PC, the LEDs begin to flash quite immediately. Turning it on anywhere between 1 and less than these 12 seconds: no hard disks available, no matter how long I wait.

– Herb
Mar 9 '18 at 4:27












2 Answers
2






active

oldest

votes


















0














4 disk USB raids are always slow to start - What you are experiencing is normal.






share|improve this answer
























  • No, what I mean is this: the hard disks will never be recognized, when they are switched on within the 12 seconds time window. I can wait for hours, they won't be seen. - Also, they are not organized as a RAID, but are simply JBOD.

    – Herb
    Mar 8 '18 at 14:28











  • Just have a timer that delays the computer coming on for 12 seconds to allow the discs sufficient time to be ready...

    – Solar Mike
    Mar 8 '18 at 14:37











  • @Solar Mike can you explain how to 'have a timer' do the job for Herb, it could be a good detailed workable answer.

    – mic84
    Mar 8 '18 at 14:45













  • Don’t have time now, but something like this may work : ebay.co.uk/itm/252926436362

    – Solar Mike
    Mar 8 '18 at 14:50











  • @SolarMike, how does this explain the fact, that when I switch on the harddisks case and 1 second later the PC the hard disks will be seen. The PC quite immediately starts flashing the case's LEDs, nothing anywhere near these 12 seconds (its a fast i7).

    – Herb
    Mar 8 '18 at 14:52



















0














A setting in the UEFI BIOS did the trick:



Boot / Fast Boot: Enabled.






share|improve this answer























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    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    0














    4 disk USB raids are always slow to start - What you are experiencing is normal.






    share|improve this answer
























    • No, what I mean is this: the hard disks will never be recognized, when they are switched on within the 12 seconds time window. I can wait for hours, they won't be seen. - Also, they are not organized as a RAID, but are simply JBOD.

      – Herb
      Mar 8 '18 at 14:28











    • Just have a timer that delays the computer coming on for 12 seconds to allow the discs sufficient time to be ready...

      – Solar Mike
      Mar 8 '18 at 14:37











    • @Solar Mike can you explain how to 'have a timer' do the job for Herb, it could be a good detailed workable answer.

      – mic84
      Mar 8 '18 at 14:45













    • Don’t have time now, but something like this may work : ebay.co.uk/itm/252926436362

      – Solar Mike
      Mar 8 '18 at 14:50











    • @SolarMike, how does this explain the fact, that when I switch on the harddisks case and 1 second later the PC the hard disks will be seen. The PC quite immediately starts flashing the case's LEDs, nothing anywhere near these 12 seconds (its a fast i7).

      – Herb
      Mar 8 '18 at 14:52
















    0














    4 disk USB raids are always slow to start - What you are experiencing is normal.






    share|improve this answer
























    • No, what I mean is this: the hard disks will never be recognized, when they are switched on within the 12 seconds time window. I can wait for hours, they won't be seen. - Also, they are not organized as a RAID, but are simply JBOD.

      – Herb
      Mar 8 '18 at 14:28











    • Just have a timer that delays the computer coming on for 12 seconds to allow the discs sufficient time to be ready...

      – Solar Mike
      Mar 8 '18 at 14:37











    • @Solar Mike can you explain how to 'have a timer' do the job for Herb, it could be a good detailed workable answer.

      – mic84
      Mar 8 '18 at 14:45













    • Don’t have time now, but something like this may work : ebay.co.uk/itm/252926436362

      – Solar Mike
      Mar 8 '18 at 14:50











    • @SolarMike, how does this explain the fact, that when I switch on the harddisks case and 1 second later the PC the hard disks will be seen. The PC quite immediately starts flashing the case's LEDs, nothing anywhere near these 12 seconds (its a fast i7).

      – Herb
      Mar 8 '18 at 14:52














    0












    0








    0







    4 disk USB raids are always slow to start - What you are experiencing is normal.






    share|improve this answer













    4 disk USB raids are always slow to start - What you are experiencing is normal.







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered Mar 8 '18 at 14:22









    JohnnyVegasJohnnyVegas

    2,4581815




    2,4581815













    • No, what I mean is this: the hard disks will never be recognized, when they are switched on within the 12 seconds time window. I can wait for hours, they won't be seen. - Also, they are not organized as a RAID, but are simply JBOD.

      – Herb
      Mar 8 '18 at 14:28











    • Just have a timer that delays the computer coming on for 12 seconds to allow the discs sufficient time to be ready...

      – Solar Mike
      Mar 8 '18 at 14:37











    • @Solar Mike can you explain how to 'have a timer' do the job for Herb, it could be a good detailed workable answer.

      – mic84
      Mar 8 '18 at 14:45













    • Don’t have time now, but something like this may work : ebay.co.uk/itm/252926436362

      – Solar Mike
      Mar 8 '18 at 14:50











    • @SolarMike, how does this explain the fact, that when I switch on the harddisks case and 1 second later the PC the hard disks will be seen. The PC quite immediately starts flashing the case's LEDs, nothing anywhere near these 12 seconds (its a fast i7).

      – Herb
      Mar 8 '18 at 14:52



















    • No, what I mean is this: the hard disks will never be recognized, when they are switched on within the 12 seconds time window. I can wait for hours, they won't be seen. - Also, they are not organized as a RAID, but are simply JBOD.

      – Herb
      Mar 8 '18 at 14:28











    • Just have a timer that delays the computer coming on for 12 seconds to allow the discs sufficient time to be ready...

      – Solar Mike
      Mar 8 '18 at 14:37











    • @Solar Mike can you explain how to 'have a timer' do the job for Herb, it could be a good detailed workable answer.

      – mic84
      Mar 8 '18 at 14:45













    • Don’t have time now, but something like this may work : ebay.co.uk/itm/252926436362

      – Solar Mike
      Mar 8 '18 at 14:50











    • @SolarMike, how does this explain the fact, that when I switch on the harddisks case and 1 second later the PC the hard disks will be seen. The PC quite immediately starts flashing the case's LEDs, nothing anywhere near these 12 seconds (its a fast i7).

      – Herb
      Mar 8 '18 at 14:52

















    No, what I mean is this: the hard disks will never be recognized, when they are switched on within the 12 seconds time window. I can wait for hours, they won't be seen. - Also, they are not organized as a RAID, but are simply JBOD.

    – Herb
    Mar 8 '18 at 14:28





    No, what I mean is this: the hard disks will never be recognized, when they are switched on within the 12 seconds time window. I can wait for hours, they won't be seen. - Also, they are not organized as a RAID, but are simply JBOD.

    – Herb
    Mar 8 '18 at 14:28













    Just have a timer that delays the computer coming on for 12 seconds to allow the discs sufficient time to be ready...

    – Solar Mike
    Mar 8 '18 at 14:37





    Just have a timer that delays the computer coming on for 12 seconds to allow the discs sufficient time to be ready...

    – Solar Mike
    Mar 8 '18 at 14:37













    @Solar Mike can you explain how to 'have a timer' do the job for Herb, it could be a good detailed workable answer.

    – mic84
    Mar 8 '18 at 14:45







    @Solar Mike can you explain how to 'have a timer' do the job for Herb, it could be a good detailed workable answer.

    – mic84
    Mar 8 '18 at 14:45















    Don’t have time now, but something like this may work : ebay.co.uk/itm/252926436362

    – Solar Mike
    Mar 8 '18 at 14:50





    Don’t have time now, but something like this may work : ebay.co.uk/itm/252926436362

    – Solar Mike
    Mar 8 '18 at 14:50













    @SolarMike, how does this explain the fact, that when I switch on the harddisks case and 1 second later the PC the hard disks will be seen. The PC quite immediately starts flashing the case's LEDs, nothing anywhere near these 12 seconds (its a fast i7).

    – Herb
    Mar 8 '18 at 14:52





    @SolarMike, how does this explain the fact, that when I switch on the harddisks case and 1 second later the PC the hard disks will be seen. The PC quite immediately starts flashing the case's LEDs, nothing anywhere near these 12 seconds (its a fast i7).

    – Herb
    Mar 8 '18 at 14:52













    0














    A setting in the UEFI BIOS did the trick:



    Boot / Fast Boot: Enabled.






    share|improve this answer




























      0














      A setting in the UEFI BIOS did the trick:



      Boot / Fast Boot: Enabled.






      share|improve this answer


























        0












        0








        0







        A setting in the UEFI BIOS did the trick:



        Boot / Fast Boot: Enabled.






        share|improve this answer













        A setting in the UEFI BIOS did the trick:



        Boot / Fast Boot: Enabled.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Dec 22 '18 at 7:42









        HerbHerb

        498520




        498520






























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