Тёмный

Taking a closer look at the Seagate ST157-A 

computerguy096
Подписаться 307
Просмотров 48 тыс.
50% 1

This is the same drive which I did a short video on a while ago, with the cover taken off.

Наука

Опубликовано:

 

24 мар 2022

Поделиться:

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист
Посмотреть позже
Комментарии : 53   
@alexanderulyev4651
@alexanderulyev4651 2 месяца назад
Mechanics turning into digits is so exciting!
@timconnors
@timconnors 3 месяца назад
Utterly insane that we expected these to last billions of cycles of the heads being moved back and forth between extremes at 100Hz. Madness, I tell you.
@xenuno
@xenuno 2 года назад
That is such beautiful example of electro-mechanical precision. Well done
@randomyt666
@randomyt666 Год назад
Modern hard drives are so precise changing the torque on a screw can cause problems
@TheDiskMaster
@TheDiskMaster 10 месяцев назад
@@randomyt666 This drive is so precise that it is operating without it's cover completely open loop (without any feedback or track following at all).
@realist77777
@realist77777 8 месяцев назад
This is from a time when programmers thought about every bit of memory and there was nothing superfluous in programs.
@kreuner11
@kreuner11 4 месяца назад
Id say that was the C64 days, by this period you could start leaving more and more junk in easily
@Tadesan
@Tadesan 10 месяцев назад
I really like string drive mechanisms like that!
@TheDiskMaster
@TheDiskMaster 10 месяцев назад
String drive? This, like most motor-actuated hard disks, uses a steel rotary band actuator. It's made of a flat strip of steel cut into two halves which wraps around the capstan on the stepper's output shaft.
@Cinnimin
@Cinnimin 7 месяцев назад
i like this drive it looks like a guy driving a big bicycle
@albert_gyorgy
@albert_gyorgy 3 месяца назад
I can't unsee it now
@silasmcgee3647
@silasmcgee3647 Год назад
That actuator arm was jumping around so fast that it was out maneuvering the cameras Max frame rate
@TheDiskMaster
@TheDiskMaster 10 месяцев назад
That's not unusual for any drive
@Denis7947.
@Denis7947. 4 месяца назад
​@@TheDiskMasteryea it has to read sectors
@Skibidi_Male_X
@Skibidi_Male_X Год назад
Great video.
@iruelkr
@iruelkr 2 месяца назад
great video!!
@RavinduBandaranayake
@RavinduBandaranayake 2 года назад
❤️
@squid13579
@squid13579 Год назад
This is just 3600 rpm ! Think about 7200 rpm ! 🔥🔥🔥
@TheDiskMaster
@TheDiskMaster 10 месяцев назад
There are plenty of drives out there that have even higher spindle speeds, of 10,000RPM and 15,000RPM!
@user-jm2vj6xx1c
@user-jm2vj6xx1c 8 месяцев назад
عمل جيد nice work
@PplsChampion
@PplsChampion 11 месяцев назад
using the ribbon of metal instead of a gear or something is interesting
@TheDiskMaster
@TheDiskMaster 10 месяцев назад
The steel rotary band is the standard method of actuation for almost all motor-driven hard disk drives. Very few use gears because they introduce slack into the mechanism and force the motor to turn faster, shortening the useful life of the drive.
@jacquesb5248
@jacquesb5248 Год назад
i had a old seagate 10MB mfm drive and it's controller.....dunno if it still works as the controller is isa based
@TheDiskMaster
@TheDiskMaster 10 месяцев назад
It probably works already or can be revived. 10MB drives would most likely be one of the following: ST-412 ST-212 ST-213
@compu85
@compu85 6 месяцев назад
If you're going to run a drive open, keep the platters vertical. It stops dust landing on them.
@rsmrsm2000
@rsmrsm2000 11 месяцев назад
please more videos
@Uruglot
@Uruglot 6 месяцев назад
Forgotten technology =)
@matthewsvideos8235
@matthewsvideos8235 Год назад
I have one of these still in good shape.
@TheDiskMaster
@TheDiskMaster 10 месяцев назад
Seagate sold an awful lot of them
@JimAntonopoulos
@JimAntonopoulos Год назад
What is the program you used?
@TheDiskMaster
@TheDiskMaster 10 месяцев назад
The first program shown is a benchmarking utility called SpeedSys.
@atauenis
@atauenis Год назад
Elderly IDE monster. I'm have such. They're almost unkillable. Too many bad sectors? Do a low-level format, and it works again. :)
@matthewsvideos8235
@matthewsvideos8235 Год назад
Can’t low level format an IDE drive. Only MFM and RLL drives.
@atauenis
@atauenis Год назад
@@matthewsvideos8235 , I know, it's not a full LLF, but such named feature from 386 BIOS works and helps.
@TheDiskMaster
@TheDiskMaster 10 месяцев назад
@@matthewsvideos8235 None of this is true. Almost all motor actuated IDE drives can be low level formatted, and Seagate even had a tool specifically for formatting these drives, called SGTFMT. Even if that were true, almost all SCSI drives support the LLF command and all ESDI drives require it just as ST-506 and ST-412 interface drives do.
@TheDiskMaster
@TheDiskMaster 10 месяцев назад
@@atauenisIt is a full LLF and it does exactly what it says on the tin.
@matthewsvideos8235
@matthewsvideos8235 10 месяцев назад
@@TheDiskMaster Generally I do not do a low level format on IDE drives with my 386. I only do it on the worst of the drives as an absolute last resort if the drive is going to end up in the dead bin. Some have been successful. I have a few to try it on, but don't think they will work again.
@Sad_Bandy
@Sad_Bandy 11 месяцев назад
i just confused how hard drives back then can be working with no covers?
@computerguy096
@computerguy096 11 месяцев назад
You're not supposed to, dust can get in there and crash the heads. This one was already damaged beyond repair.
@TheDiskMaster
@TheDiskMaster 10 месяцев назад
Significantly wider tolerances allow them to operate for some time without a cover in clean environments.
@louf7178
@louf7178 2 месяца назад
@@computerguy096 What is the damage?
@TheDiskMaster
@TheDiskMaster 10 месяцев назад
Good ol ST-157A, they're picky about IDE controllers. Only drive to ever electrocute me personally. The ST-125 is easily one of the best 20MB ST-412 interface drives out there, simply due to it's robustness and auto parking.
@incredable91
@incredable91 Год назад
ooh how did you this is much old
@TheDiskMaster
@TheDiskMaster 10 месяцев назад
In theory, it will work with any machine that still includes an IDE controller. The ST-157A is well known for not being very compatible between IDE controllers, but otherwise it should not be difficult at all to make working of drive.
@fra93ilgrande
@fra93ilgrande Год назад
All modern HDDs still operate the same way 😍🔝
@rickastley2520
@rickastley2520 Год назад
not really they use voice coils
@randomyt666
@randomyt666 11 месяцев назад
​@@rickastley2520came here to say this. Same principle, different actuator
@neorandy
@neorandy 10 месяцев назад
40 MB MFM? FLASHBACK
@TheDiskMaster
@TheDiskMaster 10 месяцев назад
This is an IDE disk drive.
@kentamccarter9580
@kentamccarter9580 Год назад
How big is this thing anyway?
@TheDiskMaster
@TheDiskMaster 10 месяцев назад
It is a 3.5" HH drive, as in, the chassis measures around 3.75x5.5x1 inch. If you're talking about data storage capacity, 42MB.
@michaeloconnor7849
@michaeloconnor7849 7 месяцев назад
Witchcraft
@Aleksandr17124
@Aleksandr17124 9 месяцев назад
это че мастурбирует
Далее
I bought 4 bad hard drives, can I make them work?!
15:45
CLANCY 🦞 Operation Squid Ink (New Brawler Animation)
00:58
Inside a Hard Disc Drive
3:31
Просмотров 1 млн
Search at San Jose
11:39
Просмотров 199 тыс.
Fujitsu M2294 14" Winchester HDD Disk Spin Up
6:36
Просмотров 141 тыс.
Spinning Disks: the smallest hard drives compared
16:10
Getting Dial Up Internet in 2023!
16:50
Просмотров 947 тыс.
Not forgotten: MFM hard drives
30:22
Просмотров 92 тыс.
MFM drives are really unreliable
48:11
Просмотров 121 тыс.
Новые iPhone 16 и 16 Pro Max
0:42
Просмотров 685 тыс.
10 МИНУСОВ IPHONE 15
18:03
Просмотров 24 тыс.
iPhone, Galaxy или Pixel? 😎
0:16
Просмотров 1,2 млн